Updated on 2025/09/27

写真a

 
Tomoya Shibayama
 
Organization
Research and Development Initiative Institute Professor
Contact information
The inquiry by e-mail is 《here
Profile

Dr. Tomoya Shibayama is an Institute Professor at Research and Development Initiative, Chuo University in Tokyo, Japan.  He is also a Professor Emeritus of Coastal Engineering at Department of Civil and Environmental Engineering of Waseda University in Tokyo, Japan. He is renown leaders in tsunami and storm surge disaster mitigation research in Japan. He uses hydraulic laboratory experiments, field surveys and numerical simulations to investigate tsunami effects on infrastructure and coastal communities. He served as team leader of survey teams for all major tsunami and storm surge events which occurred during the last decade. After the 2011 Tohoku tsunami, he established at Waseda University the Composed Crisis Research Institute and was appointed as its Director.

External link

Degree

  • 工学博士 ( 東京大学 )

Education

  • 1979.3
     

    The University of Tokyo   master course   completed

Professional Memberships

  • 1988.1 - Now

    日本沿岸域学会

  • 1978.10 - Now

    American Society of Civil Engineers

  • 1978.9 - Now

    International Association for Hydro-Environment Engineering and Research (IAHR)

  • 1974.9 - Now

    土木学会

Research Interests

  • Coastal Disaster Prevention

  • Coastal Engineering

Research Areas

  • Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Hydroengineering

Papers

  • Field survey of the 2024 Noto Peninsula Earthquake and Tsunami in Japan: Characteristics of damage patterns to coastal communities Reviewed

    Naoto Inagaki, Yuta Nishida, Takahito Mikami, Ryota Nakamura, Ioan Nistor, Mohsen Soltanpour, Nils Goseberg, Tomoya Shibayama

    Ocean Engineering   316   2025.1

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.oceaneng.2024.119765

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  • Dataset of Post-Event Survey of the 2024 Noto Peninsula Earthquake Tsunami in Japan Reviewed

    Masatoshi Yuhi, Shinya Umeda, Mamoru Arita, Junichi Ninomiya, Hideomi Gokon, Taro Arikawa, Toshitaka Baba, Fumihiko Imamura, Kenzou Kumagai, Shuichi Kure, Takuya Miyashita, Anawat Suppasri, Akio Kawai, Hisamichi Nobuoka, Tomoya Shibayama, Shunichi Koshimura, Nobuhito Mori

    Scientific Data   11 ( 1 )   2024.12

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/s41597-024-03619-z

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  • Laboratory study on effect of vegetation in reducing wave overtopping under wind effect Reviewed

    Yudai Aoki, Kosuke Sasaki, Ryota Nakamura, Kunihiko Ishibashi, Katsuhiro Yamamoto, Naoto Inagaki, Tomoya Shibayama

    Ocean Engineering   311   118984 - 118984   2024.11

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    DOI: 10.1016/j.oceaneng.2024.118984

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  • Experimental investigation into the effects of strong winds on the transport of overtopping water mass over a vertical seawall Reviewed

    Naoto Inagaki, Tomoya Shibayama, Ryota Nakamura, Kunihiko Ishibashi, Miguel Esteban

    Coastal Engineering Journal   1 - 15   2024.1

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    Publishing type:Research paper (scientific journal)   Publisher:Informa UK Limited  

    DOI: 10.1080/21664250.2023.2286831

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  • Post-event survey of the 2024 Noto Peninsula earthquake tsunami in Japan Reviewed

    Masatoshi Yuhi, Shinya Umeda, Mamoru Arita, Junichi Ninomiya, Hideomi Gokon, Taro Arikawa, Tositaka Baba, Fumihiko Imamura, Akio Kawai, Kenzo Kumagai, Shuichi Kure, Takuya Miyashita, Anawat Suppasri, Hisamichi Nobuoka, Tomoya Shibayama, Shunichi Koshimura, Nobuhito Mori

    Coastal Engineering Journal   66 ( 3 )   405 - 418   2024

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    DOI: 10.1080/21664250.2024.2368955

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  • Modelling the typhoon-induced morphodynamics of a nourished gravel coast Reviewed

    Yuta Nishida, Tomoya Shibayama, Takahito Mikami, Miguel Esteban

    Coastal Engineering Journal   2024

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    DOI: 10.1080/21664250.2024.2441518

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  • Development and Implementation of a Smartphone Application for Tsunami Evacuation Reviewed

    Dawn Chenxi Han, Tomoyuki Takabatake, Miguel Esteban, Tomoya Shibayama

    International Journal of Disaster Risk Reduction   96   103915 - 103915   2023.10

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    DOI: 10.1016/j.ijdrr.2023.103915

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  • Developing a Resilience Index for the Pile-Supported Piers of the Port of Batangas under Tsunami Load Reviewed

    Jon Arnel S. Telan, Lessandro Estelito O. Garciano, Mario P. De Leon, Tomoya Shibayama

    Natural Hazards Review   24 ( 2 )   2023.5

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    DOI: 10.1061/(ASCE)NH.1527-6996.0000605

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  • Prediction of Ashfall Distribution of Mt. Fuji Eruption Using the WRF-FALL3D Linked Model and Evaluation of the Impact on the Expressway Network Reviewed

    Taisei Goto, Tomoya Shibayama

    J. JSNDS   42 ( 2 )   159 - 169   2023.2

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  • A proposal of a semi-empirical method for modifying the atmospheric pressure and wind fields of tropical cyclones Reviewed

    Takumu Iwamoto, Tomohiro Takagawa, Tomoya Shibayama, Miguel Esteban, Martin Mäll

    Coastal Engineering Journal   2023

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    DOI: 10.1080/21664250.2023.2228005

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  • Analysis of the impact of offshore wind power on the Japanese energy grid Reviewed

    Ying Tung Chen, Kristina Knüpfer, Miguel Esteban, Tomoya Shibayama

    AIMS Energy   11 ( 1 )   110 - 134   2023

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    DOI: 10.3934/energy.2023006

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  • A reliable energy system for Japan with merit order dispatch, high variable renewable share and no nuclear power Reviewed

    K. Knuepfer, N. Rogalski, A. Knuepfer, M. Esteban, T. Shibayama

    Applied Energy   328   2022.12

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.apenergy.2022.119840

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  • Experimental and Numerical Modeling of a Tide Embankment Section Subjected to Storm Surge in Tacloban City, Philippines Reviewed

    Patrick Shaun N. Ngo, Lessandro Estelito O. Garciano, Mario P. De Leon, Neil Stephen A. Lopez, Hidenori Ishii, Kotaro Iimura, Justin Joseph P. Valdez, Tomoya Shibayama

    Natural Hazards Review   23 ( 4 )   2022.11

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    DOI: 10.1061/(ASCE)NH.1527-6996.0000575

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  • Estimating the Influence of Sea Level Rise and Climate Change on Coastal Defences in Western Taiwan Reviewed

    Journal of Coastal and Hydraulic Structures.   2. ( 16 )   1 - 31   2022.8

  • Simulated flood forces on a building due to the storm surge by Typhoon Haiyan Reviewed

    Justin Joseph Valdez, Tomoya Shibayama, Tomoyuki Takabatake, Miguel Esteban

    COASTAL ENGINEERING JOURNAL   65 ( 1 )   21 - 38   2022.7

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    DOI: 10.1080/21664250.2022.2099683

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  • Simulated effectiveness of coastal forests on reduction in loss of lives from a tsunami Reviewed

    Tomoyuki Takabatake, Miguel Esteban, Tomoya Shibayama

    International Journal of Disaster Risk Reduction   74   102954   2022.5

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    DOI: 10.1016/j.ijdrr.2022.102954

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  • Three‐Dimensional Physical Modelling of Tsunamis Generated by Partially Submerged Landslides Reviewed

    Tomoyuki Takabatake, Dawn Chenxi Han, Justin Joseph Valdez, Naoto Inagaki, Martin Mäll, Miguel Esteban, Tomoya Shibayama

    Journal of Geophysical Research: Oceans   2022.1

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    Publishing type:Research paper (scientific journal)   Publisher:American Geophysical Union (AGU)  

    DOI: 10.1029/2021jc017826

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  • Influence of road blockage on tsunami evacuation: A comparative study of three different coastal cities in Japan Reviewed

    Tomoyuki Takabatake, Dawn Han Chenxi, Miguel Esteban, Tomoya Shibayama

    International Journal of Disaster Risk Reduction   68   102684 - 102684   2022.1

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.ijdrr.2021.102684

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  • Increase in overtopping rate caused by local gust-winds during the passage of a typhoon Reviewed

    Naoto Inagaki, Tomoya Shibayama, Tomoyuki Takabatake, Miguel Esteban, Martin Mäll, Thit Oo Kyaw

    Coastal Engineering Journal   64 ( 1 )   116 - 134   2022

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1080/21664250.2022.2027090

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  • Storm Surge Awareness and Intended Evacuation in Low-Lying Areas of Tokyo City Reviewed

    Kohei Senoo, Tomoyuki Takabatake, Miguel Esteban, Tomoya Shibayama

    International Journal of Sustainable Future for Human Security   7 ( 2 )   3 - 14   2021.11

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    Publishing type:Research paper (scientific journal)   Publisher:SustaiN Society  

    Japan is a country that is normally considered to be well protected against storm surges, with the population aware of the potential consequences of such events. However, the inundation caused by typhoon Jebi in 2018 at Osaka Bay has highlighted that there is a significant risk of flooding in many areas. In the present paper the authors conducted questionnaire surveys with the aim to gauge the level of storm surge awareness and intended evacuation behaviour of the population of low-lying areas of Tokyo City. The results indicate that respondents have a high awareness regarding storm surges, but lower actual knowledge about the risk in their area and the evacuation plan. Respondents who have higher risk awareness about storm surges often had participated in evacuation drills, and those who knew about the inundation map tend to indicate that they would perform long-distance evacuation. It was also found that respondents who are in their 30s have lower awareness than other age groups. Keywords: storm surge; awareness; natural hazards; Japan; intended evacuation behaviour

    DOI: 10.24910/jsustain/7.2/314

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  • Experimental and numerical investigation on tsunami run-up flow around coastal buildings Reviewed

    Hidenori Ishii, Tomoyuki Takabatake, Miguel Esteban, Jacob Stolle, Tomoya Shibayama

    Coastal Engineering Journal   63 ( 4 )   485 - 503   2021.10

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    Publishing type:Research paper (scientific journal)   Publisher:Informa UK Limited  

    DOI: 10.1080/21664250.2021.1949920

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  • Review of mixed-technology vehicle fleet evolution and representation in modelling studies: Policy contexts of Germany and Japan

    Kristina Knüpfer, Martin Mäll, Miguel Esteban, Tomoya Shibayama

    Energy Policy   156   2021.9

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier Ltd  

    DOI: 10.1016/j.enpol.2021.112287

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  • A Comparison between Agent-Based and GIS-Based Tsunami Evacuation Simulations: A Case Study for Tofino, BC Reviewed

    Joseph Kim, Tomoyuki Takabatake, Ioan NISTOR, Tomoya Shibayama

    Canadian Journal of Civil Engineering   2021.6

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    Soft measures such as evacuation planning are recommended to mitigate the loss of life during tsunamis. Two types of evacuation models are widely used: (1) Agent-based modelling (ABM) defines sets of rules that individual agents in a simulation follow during a simulated evacuation. (2) Geographical information systems (GIS) are more accessible to city planners, but cannot incorporate the dynamic behaviours found in ABMs. The two evacuation modelling methodologies were compared through a case study by assessing the state of evacuation preparedness and investigating potential mitigation options. The two models showed different magnitudes for mortality rates and facility demand but had similar trends. Both models agreed on the best solution to reduce the loss of life for the community. GIS may serve as a useful tool for initial investigation or as a validation tool for ABMs. ABMs are recommended for use when modelling evacuation until GIS methodologies are further developed.

    DOI: 10.1139/cjce-2020-0660

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  • Correction to: Extreme waves induced by cyclone Nargis at Myanmar coast: numerical modeling versus satellite observations (Natural Hazards, (2021), 106, 3, (1797-1818), 10.1007/s11069-021-04511-4)

    Thit Oo Kyaw, Miguel Esteban, Martin Mäll, Tomoya Shibayama

    Natural Hazards   106 ( 3 )   1819   2021.4

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media B.V.  

    DOI: 10.1007/s11069-021-04687-9

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  • Analysis of pv subsidy schemes, installed capacity and their electricity generation in japan Reviewed

    Kristina Knüpfer, Samuel Matthew G. Dumlao, Miguel Esteban, Tomoya Shibayama, Keiichi N. Ishihara

    Energies   14 ( 8 )   2021.4

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    DOI: 10.3390/en14082128

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  • Engineering Lessons from September 28, 2018 Indonesian Tsunami: Scouring Mechanisms and Effects on Infrastructure Reviewed

    Clemens Krautwald, Jacob Stolle, Ian Robertson, Hendra Achiari, Takahito Mikami, Ryota Nakamura, Tomoyuki Takabatake, Yuta Nishida, Tomoya Shibayama, Miguel Esteban, Nils Goseberg, Ioan Nistor

    Journal of Waterway, Port, Coastal and Ocean Engineering   147 ( 2 )   2021.3

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1061/(ASCE)WW.1943-5460.0000620

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  • Influence of Edge Waves on Tsunami Characteristics along Kujukuri Beach, Japan Reviewed

    Kentaro Koyano, Tomoyuki Takabatake, Miguel Esteban, Tomoya Shibayama

    Journal of Waterway, Port, Coastal and Ocean Engineering   147 ( 1 )   2021.1

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1061/(ASCE)WW.1943-5460.0000617

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  • Field Survey of Flank Collapse and Run-up Heights due to 2018 Anak Krakatau Tsunami Reviewed

    Esteban, M, Takabatake, T, Achiari, H, Mikami, T, Nakamura, R, Gelfi, M, Panalaran, S, Nishida, Y, Inagaki, N, Chadwick, C, Oizumi, K, Shibayama, T

    Journal of Coastal and Hydraulic Structures   1   1 - 14   2021.1

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    DOI: 10.48438/jchs.2021.0001

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  • Effect of translate speed of typhoon on wind waves Reviewed

    Naoto Inagaki, Tomoya Shibayama, Miguel Esteban, Tomoyuki Takabatake

    Natural Hazards   105 ( 1 )   841 - 858   2021.1

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    DOI: 10.1007/s11069-020-04339-4

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  • Tropical Cyclones in the Arabian Sea: overview and simulation of winds and storm-induced waves Reviewed

    Mohsen Soltanpour, Zahra Ranji, Tomoya Shibayama, Sarmad Ghader

    Natural Hazards   2021

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    DOI: 10.1007/s11069-021-04702-z

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  • The mechanism of fluidization in mud beds under progressive waves Reviewed

    Mohsen Soltanpour, Kourosh Hejazi, Mohammad Hadi Jabbari, Tomoya Shibayama, Shinsaku Nishizaki, Tomoyuki Takabatake

    Coastal Engineering Journal   63 ( 1 )   32 - 51   2021

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1080/21664250.2020.1847401

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  • Experimental and numerical investigation of tsunami behavior around two upright sea dikes with different heights Reviewed

    Kotaro Iimura, Tomoya Shibayama, Tomoyuki Takabatake, Miguel Esteban

    Coastal Engineering Journal   63 ( 1 )   1 - 16   2021

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    DOI: 10.1080/21664250.2020.1826126

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  • Extreme waves induced by cyclone Nargis at Myanmar coast: numerical modeling versus satellite observations Reviewed

    Thit Oo Kyaw, Miguel Esteban, Martin Mäll, Tomoya Shibayama

    Natural Hazards   2021

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    DOI: 10.1007/s11069-021-04511-4

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  • Field Survey of 2018 Krakatau tsunami

    Miguel Esteban, Hendra Achiari, Tomoyuki Takabatake, Ryota Nakamura, Takahito Mikami, Satriyo Panalaran, Mustarakh Gelfi, Naoto Inagaki, Yuta Nishida, Christopher Chadwick, Kota Oizumi, Tomoya Shibayama

    Proceedings of the Coastal Engineering Conference   36 ( 2020 )   2020.12

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  • Effect of translation speed of typhoons on wind waves

    Naoto Inagaki, Tomoya Shibayama, Miguel Esteban, Tomoyuki Takabatake

    Proceedings of the Coastal Engineering Conference   36 ( 2020 )   2020.12

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  • Transient dam-break wave loading on pipelines near sloping bed

    Behnaz Ghodoosipour, Tomoyuki Takabatake, Ioan Nistor, Majid Mohammadian, Go Hamano, Hidenori Ishii, Kotaro Imura, Tomoya Shibayama

    Proceedings of the Coastal Engineering Conference   36 ( 2020 )   2020.12

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:American Society of Civil Engineers (ASCE)  

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  • Spectral analysis of storm-induced waves by Cyclone Ashobaa in Arabian Sea and Gulf of Oman

    Zahra Ranji, Mohsen Soltanpour, Tomoya Shibayama

    Proceedings of the Coastal Engineering Conference   36 ( 2020 )   2020.12

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  • Corrigendum to “Suspended sand concentration models under breaking waves: Evaluation of new and existing formulations” [Marine Geology 426 (2020) 106197] (Marine Geology (2020) 426, (S0025322720300852), (10.1016/j.margeo.2020.106197))

    Gabriel Lim, Ravindra Jayaratne, Tomoya Shibayama

    Marine Geology   430   2020.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier B.V.  

    DOI: 10.1016/j.margeo.2020.106362

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  • Physical modeling of tsunamis generated by subaerial, partially submerged, and submarine landslides Reviewed

    Tomoyuki Takabatake, Martin Mäll, Dawn Chenxi Han, Naoto Inagaki, Daichi Kisizaki, Miguel Esteban, Tomoya Shibayama

    Coastal Engineering Journal   62 ( 4 )   582 - 601   2020.12

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1080/21664250.2020.1824329

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  • Numerical Analysis of Seismic Water Level Oscillations in Canals Reviewed

    Koichiro Ohira, Tomoyuki Takabatake, Miguel Esteban, Rafael Aranguiz, Martin Mäll, Tomoya Shibayama

    Journal of Waterway, Port, Coastal and Ocean Engineering   146 ( 6 )   2020.11

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    DOI: 10.1061/(ASCE)WW.1943-5460.0000602

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  • Estimation of volcanic ashfall deposit and removal works based on ash dispersion simulations Reviewed

    Yosuke Tomii, Tomoya Shibayama, Yuta Nishida, Ryota Nakamura, Non Okumura, Hideaki Yamaguchi, Yosuke Tanokura, Yu Oshima, Natsuko Sugawara, Kota Fujisawa, Takayuki Wakita, Takahito Mikami, Tomoyuki Takabatake, Miguel Esteban

    Natural Hazards   103 ( 3 )   3377 - 3399   2020.9

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s11069-020-04134-1

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    Other Link: http://link.springer.com/article/10.1007/s11069-020-04134-1/fulltext.html

  • Comparative Analysis of Triggers for Evacuation during Recent Tsunami Events Reviewed

    Takahito Mikami, Tomoya Shibayama, Miguel Esteban, Rafael Aránguiz

    Natural Hazards Review   21 ( 3 )   2020.8

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1061/(ASCE)NH.1527-6996.0000386

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  • Simulated effectiveness of a car evacuation from a tsunami Reviewed

    Tomoyuki Takabatake, Kota Fujisawa, Miguel Esteban, Tomoya Shibayama

    International Journal of Disaster Risk Reduction   47   2020.8

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.ijdrr.2020.101532

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  • Suspended sand concentration models under breaking waves: Evaluation of new and existing formulations Reviewed

    Gabriel Lim, Ravindra Jayaratne, Tomoya Shibayama

    Marine Geology   426   2020.8

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    DOI: 10.1016/j.margeo.2020.106197

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  • The 2018 Sulawesi tsunami in Palu city as a result of several landslides and coseismic tsunamis Reviewed

    Rafael Aránguiz, Miguel Esteban, Hiroshi Takagi, Takahito Mikami, Tomoyuki Takabatake, Matías Gómez, Juan González, Tomoya Shibayama, Ryo Okuwaki, Yuji Yagi, Kousuke Shimizu, Hendra Achiari, Jacob Stolle, Ian Robertson, Koichiro Ohira, Ryota Nakamura, Yuta Nishida, Clemens Krautwald, Nils Goseberg, Ioan Nistor

    Coastal Engineering Journal   62 ( 4 )   1 - 15   2020.6

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    Publishing type:Research paper (scientific journal)   Publisher:Informa UK Limited  

    DOI: 10.1080/21664250.2020.1780719

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  • Effectiveness of hard and soft tsunami countermeasures on loss of life under different population scenarios Reviewed

    Tomoyuki Takabatake, Miguel Esteban, Ioan Nistor, Tomoya Shibayama, Shinsaku Nishizaki

    International Journal of Disaster Risk Reduction   45   2020.5

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.ijdrr.2020.101491

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  • Pseudo-climate modelling study on projected changes in extreme extratropical cyclones, storm waves and surges under CMIP5 multi-model ensemble: Baltic Sea perspective Reviewed

    Martin Mäll, Ryota Nakamura, Ülo Suursaar, Tomoya Shibayama

    Natural Hazards   102 ( 1 )   67 - 99   2020.5

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s11069-020-03911-2

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    Other Link: http://link.springer.com/article/10.1007/s11069-020-03911-2/fulltext.html

  • Tsunami risk hazard in Tokyo Bay: The challenge of future sea level rise Reviewed

    Ryutaro Nagai, Tomoyuki Takabatake, Miguel Esteban, Hidenori Ishii, Tomoya Shibayama

    International Journal of Disaster Risk Reduction   45   2020.5

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    DOI: 10.1016/j.ijdrr.2019.101321

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  • Effect of bed roughness on tsunami bore propagation and overtopping Reviewed

    Miguel Esteban, Jochem Jan Roubos, Kotaro Iimura, Jorrit Thomas Salet, Bas Hofland, Jeremy Bricker, Hidenori Ishii, Go Hamano, Tomoyuki Takabatake, Tomoya Shibayama

    Coastal Engineering   157   2020.4

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    DOI: 10.1016/j.coastaleng.2019.103539

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  • Post-event survey of locally concentrated disaster due to 2019 Typhoon Faxai along the western shore of Tokyo Bay, Japan Reviewed

    Takayuki Suzuki, Yoshimitsu Tajima, Masashi Watanabe, Naoki Tsuruta, Hiroshi Takagi, Tomoyuki Takabatake, Kojiro Suzuki, Takenori Shimozono, Yoshinori Shigihara, Tomoya Shibayama, Shingo Kawaguchi, Taro Arikawa

    COASTAL ENGINEERING JOURNAL   62 ( 2 )   146 - 158   2020.3

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    DOI: 10.1080/21664250.2020.1738620

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  • Tsunami awareness and evacuation behaviour during the 2018 Sulawesi Earthquake tsunami Reviewed

    Anisa Shafiyya Harnantyari, Tomoyuki Takabatake, Miguel Esteban, Paolo Valenzuela, Yuta Nishida, Tomoya Shibayama, Hendra Achiari, Rusli, Abdul Gafur Marzuki, Muhammad Fadel Hidayat Marzuki, Rafael Aránguiz, Thit Oo Kyaw

    International Journal of Disaster Risk Reduction   43   2020.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.ijdrr.2019.101389

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  • Experimental and analytical investigation of the response of a mud layer to solitary waves Reviewed

    Mohsen Soltanpour, S. Hadi Shamsnia, Tomoya Shibayama, Ryota Nakamura

    Ocean Dynamics   70 ( 2 )   165 - 186   2020.2

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s10236-019-01319-6

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    Other Link: http://link.springer.com/article/10.1007/s10236-019-01319-6/fulltext.html

  • Evaluation of force exerted by tetrapods displaced by tsunami on caisson breakwater return wall Reviewed

    Go Hamano, Hidenori Ishii, Kotaro Iimura, Tomoyuki Takabatake, Jacob Stolle, Miguel Esteban, Tomoya Shibayama

    COASTAL ENGINEERING JOURNAL   62 ( 2 )   170 - 181   2020.2

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    DOI: 10.1080/21664250.2020.1723194

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  • Simulations of future typhoons and storm surges around Tokyo Bay using IPCC AR5 RCP 8.5 scenario in multi global climate models Reviewed

    Ryota Nakamura, Tomoya Shibayama, Miguel Esteban, Takumu Iwamoto, Shinsaku Nishizaki

    Coastal Engineering Journal   62 ( 1 )   101 - 127   2020.1

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    DOI: 10.1080/21664250.2019.1709014

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  • Numerical analysis of tsunami flow around coastal dyke

    T. Mikami, T. Shibayama

    Proceedings of the 7th International Conference on Asian and Pacific Coasts, APAC 2013   654 - 659   2020

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  • IMPACT ASSESSMENT OF SLOSHING IN BAYS AND LAKES Reviewed

    OHIRA Koichiro, TAKABATAKE Tomoyuki, MIKAMI Takahito, SHIBAYAMA Tomoya

    Journal of JSCE   8 ( 1 )   13 - 25   2020

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    <p> Water–level fluctuations resembling long period waves, which differ from normal wind waves, were observed immediately after the Tohoku earthquake of 2011 in multiple locations, such as lakes in Yamanashi Prefecture, the fjords of Norway, and other sites located far away from the epicenter. Not many research on similar abnormal water–level fluctuations have been conducted thus far and, in many cases, these studies have treated the phenomena as seiches. However, researchers have not established concrete wave generation mechanisms and evaluation methods, and their awareness of this phenomenon and disaster prevention remains low. In this study, the authors sought to select a quantitative impact assessment method and learn more about this phenomenon. The authors used previous research and eyewitness accounts to judge that onsite slosh dynamics caused the waves to generate, and the authors attempted to recreate this phenomenon using a 3-D slosh dynamic analysis. After comparing laboratory results to verify the validity of the analysis, the authors recreated past examples of waves and also made future predictions. As a result, the authors were able to recreate abnormal water–level fluctuations based on this method. In addition, the authors identified water damage risks to in-land lakes and waterways of inner parts of bays. These are different from risks posed by tsunamis. The waves are formed immediately after the onset of an earthquake.</p>

    DOI: 10.2208/journalofjsce.8.1_13

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  • Analysis of multi-layer safety in countries affected by recent tsunamis: Emergence of a global tsunami culture

    M. Esteban, V. Tsimopoulou, T. Mikami, N. Y. Yun, A. Suppasri, T. Shibayama

    Proceedings of the 7th International Conference on Asian and Pacific Coasts, APAC 2013   444 - 449   2020

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  • Present and future tsunami and storm surge protections in Tokyo and Sagami bays Reviewed

    T. Shibayama, K. Ohira, T. Takabatake

    Proceedings of the 7th International Conference on Asian and Pacific Coasts, APAC 2013   764 - 766   2020

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  • Adaptation to sea level rise in densely populated coastal areas: Learning from examples of land subsidence in japan, indonesia and the philippines

    Miguel Esteban, Hiroshi Takagi, Motoharu Onuki, Christopher Chadwick, Tomoya Shibayama, Ma. Laurice Jamero, Dyah Fatma, Takahito Mikami, Paolo Valenzuela, Richard Crichton

    APAC 2019 - Proceedings of the 10th International Conference on Asian and Pacific Coasts   1185 - 1192   2020

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    DOI: 10.1007/978-981-15-0291-0_162

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  • Multi level changes to the japanese electricity grid due to increasing entry of small scale renewables and alternative fuel vehicles

    Kristina Knuepfer, Miguel Esteban, Tomoya Shibayama

    Proceedings of the World Congress on New Technologies   107 - 107-2   2020

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    DOI: 10.11159/icert20.107

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  • Field survey and evacuation behaviour during the 2018 Sunda Strait tsunami Reviewed

    Tomoyuki Takabatake, Tomoya Shibayama, Miguel Esteban, Hendra Achiari, Nanda Nurisman, Mustarakh Gelfi, Trika Agnestasia Tarigan, Elsa Rizkiya Kencana, Muhammad Aldhiansyah Rifqi Fauzi, Satriyo Panalaran, Anisa Shafiyya Harnantyari, Thit Oo Kyaw

    COASTAL ENGINEERING JOURNAL   61 ( 4 )   423 - 443   2019.10

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    DOI: 10.1080/21664250.2019.1647963

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  • Street-scale storm surge load impact assessment using fine-resolution numerical modelling: a case study from Nemuro, Japan Reviewed

    Ryota Nakamura, Martin Mäll, Tomoya Shibayama

    Natural Hazards   99   391 - 422   2019.10

  • Numerical Simulation of Beach Changes on Seisho Coast by Typhoon Jongdari Reviewed

    Nishida Yuta, Shibayama Tomoya, Takabatake Tomoyuki, Esteban Miguel

    Proceedings of the 10th International Conference on Asian and Pacific Coasts   503 - 508   2019.9

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    DOI: 10.1007/978-981-15-0291-0_69

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  • Experimental investigation on the influence of arrangement of buil-dings on tsunami run-up flow Reviewed

    Hidenori Ishiii, Tomoyuki Takabatake, Miguel Esteban, Go Hamano, Kotaro Iimura, Tomoya Shibayama

    Laboratory study of tsunami be-havior around two upright sea dikes with different heights   2019.9

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  • Laboratory study of tsunami be-havior around two upright sea dikes with different heights Reviewed

    Kotaro Iimura, Tomoya Shibayama, Tomoyuki Takabatake, Miguel Esteban, Hidenori Ishii, Go Hamano

    Proceedings of the Coastal Structures Conference 2019   28th   2019.9

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  • Field Survey of the 2018 Sulawesi Tsunami: Inundation and Run-up Heights and Damage to Coastal Communities Reviewed

    Takahito Mikami, Tomoya Shmayama, Miguel Esteban, Tomoyuki Takabatake, Ryota Nakamura, Yuta Nishida, Hendra Achiari, Rusli, Abdul Gafur Marzuki, Muhammad Fadel Hidayat Marzuki, Jacob Stolle, Clemens Krautwald, Ian Robertson, Rafael Aranguiz, Koichiro Ohira

    PURE AND APPLIED GEOPHYSICS   176 ( 8 )   3291 - 3304   2019.8

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    DOI: 10.1007/s00024-019-02258-5

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  • Numerical modelling of coastal inundation from Cascadia Subduction Zone tsunamis and implications for coastal communities on western Vancouver Island, Canada Reviewed

    Tomoyuki Takabatake, Philippe St-Germain, Ioan Nistor, Jacob Stolle, Tomoya Shibayama

    NATURAL HAZARDS   98 ( 1 )   267 - 291   2019.8

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    DOI: 10.1007/s11069-019-03614-3

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  • 2018 Typhoon Jebi post-event survey of coastal damage in the Kansai region, Japan Reviewed

    Nobuhito Mori, Tomohiro Yasuda, Taro Arikawa, Tomoya Kataoka, Sota Nakajo, Kojiro Suzuki, Yusuke Yamanaka, Adrean Webb, Tomoyuki Takahashi, Sooyoul Kim, Susumu Araki, Yoko Shibutani, Takashi Yamano, Daiki Sakai, Tomohiro Takagawa, Naoki Tsuruta, Shingo Kawaguchi, Syota Asahi, Takashi Fujiki, Takumu Iwamoto, Yu Chida, Tomoya Shibayama, Miguel Esteban, Tomoyuki Takabatake, Ryota Nakamura, Kohji Uno, Tetsuya Kakinoki, Yasuo Nihei, Daisuke Inazu, Takaaki Shigematsu, Kazunori Sameshima, Kazuhiko Honda, Daiki Satomura, Ibuki Tsujisawa, Kentaro Kumagai, Noriki Sugahara, Shoichi Emoto, Yoshimitsu Tajima

    Coastal Engineering Journal   61 ( 3 )   278 - 294   2019.7

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    DOI: 10.1080/21664250.2019.1619253

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  • A semi-empirical formula for calculating the breaking depth of plunging waves Reviewed

    Wenang Xie, Tomoya Shibayama, Miguel Esteban

    Coastal Engineering Journal   61   199 - 209   2019.4

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    DOI: 10.1080/21664250.2019.1579459

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  • Adaptation to sea level rise on low coral islands: Lessons from recent events Reviewed

    Miguel Esteban, Ma. Laurice Jamero, Leonard Nurse, Lilian Yamamoto, Hiroshi Takagi, Nguyen Danh Thao, Takahito Mikami, Paul Kench, Motoharu Onuki, Angelie Nellas, Richard Crichton, Ven Paolo Valenzuela, Christopher Chadwick, John Erick Avelino, Nicholson Tan, Tomoya Shibayama

    OCEAN & COASTAL MANAGEMENT   168   35 - 40   2019.2

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    DOI: 10.1016/j.ocecoaman.2018.10.031

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  • Debris transport over a sloped surface in tsunami-like flow conditions Reviewed

    Jacob Stolle, Tomoyuki Takabatake, Go Hamano, Hidenori Ishii, Kotaro Limura, Tomoya Shibayama, Ioan Nistor, Nils Goseberg, Emil Petriu

    COASTAL ENGINEERING JOURNAL   61 ( 2 )   241 - 255   2019

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    DOI: 10.1080/21664250.2019.1586288

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  • Engineering Lessons from the 28 September 2018 Indonesian Tsunami: Debris Loading Reviewed

    Jacob Stolle, Clemens Krautwald, Ian Robertson, Hendra Achiari, Takahito Mikami, Ryota Nakamura, Tomoyuki Takabatake, Yuta Nishida, Tomoya Shibayama, Miguel Esteban, Ioan Nistor, Nils Goseberg

    Canadian Journal of Civil Engineering   47 ( 1 )   1 - 12   2019

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    DOI: 10.1139/cjce-2019-0049

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  • Modeling cyclone-related precipitation changes in future climates using WRF model and CMIP5 output data

    Martin Mäll, Ülo Suursaar, Tomoya Shibayama, Ryota Nakamura

    International Geoscience and Remote Sensing Symposium (IGARSS)   2019-   7590 - 7593   2019

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    DOI: 10.1109/IGARSS.2019.8900309

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  • Modeling parameters and impacts of future cyclones: South-east asian and northern european case studies

    Martin Mäll, Ülo Suursaar, Ryota Nakamura, Khandker Masuma Tasnim, Tomoya Shibayama

    International Geoscience and Remote Sensing Symposium (IGARSS)   2019-   9346 - 9349   2019

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    DOI: 10.1109/IGARSS.2019.8900193

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  • Field Survey of 2018 Typhoon Jebi in Japan: Lessons for Disaster Risk Management Reviewed

    Tomoyuki Takabatake, Martin Mall, Miguel Esteban, Ryota Nakamura, Thit Oo Kyaw, Hidenori Ishii, Justin Joseph Valdez, Yuta Nishida, Fuma Noya, Tomoya Shibayama

    GEOSCIENCES   8 ( 11 )   2018.11

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    DOI: 10.3390/geosciences8110412

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  • Experimental investigation of debris damming loads under transient supercritical flow conditions Reviewed

    Jacob Stolle, Tomoyuki Takabatake, Ioan Nistor, Takahito Mikami, Shinsaku Nishizaki, Go Hamano, Hidenori Ishii, Tomoya Shibayama, Nils Goseberg, Emil Petriu

    COASTAL ENGINEERING   139   16 - 31   2018.9

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    DOI: 10.1016/j.coastaleng.2018.04.026

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  • A study on mud particle velocities and mass transport in wave-current-mud interaction Reviewed

    Mohsen Soltanpour, S. Hadi Shamsnia, Tomoya Shibayama, Ryota Nakamura

    Applied Ocean Research   78   267 - 280   2018.9

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    DOI: 10.1016/j.apor.2018.06.019

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  • Advanced casualty estimation based on tsunami evacuation intended behavior: case study at Yuigahama Beach, Kamakura, Japan Reviewed

    Tomoyuki Takabatake, Tomoya Shibayama, Miguel Esteban, Hidenori Ishii

    NATURAL HAZARDS   92 ( 3 )   1763 - 1788   2018.7

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    DOI: 10.1007/s11069-018-3277-0

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  • Tsunami awareness: a comparative assessment between Japan and the USA Reviewed

    Miguel Esteban, Jeremy Bricker, Ricardo San Carlos Arce, Hiroshi Takagi, NamYi Yun, Warathida Chaiyapa, Alexander Sjoegren, Tomoya Shibayama

    Natural Hazards   93   1 - 22   2018.6

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    DOI: 10.1007/s11069-018-3365-1

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  • Overtopping of structures by tsunami bores Reviewed

    Esteban, M, Glasbergen, T, Takabatake, T, Hofland, B, Stolle, J, Nishida, Y, Nihizaki, S, Bricker, J, Nistor, I, Shibayama, T

    Proceedings of the 7thInternational Conference on the Application of Physical Modelling in Coastal and Port Engineering and Science (Coastlab)   2018.5

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  • A semi-empirical formula for wave attenuation over muddy bed under current

    Wenang Xie, Tomoya Shibayama

    Proceedings of the 9th International Conference on APAC 2017   34 - 43   2018.1

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  • Hindcasting of Wave Climate along the Pacific Coast of Japan in October 2014

    Shinsaku Nishizaki, Tomoya Shibayama, Tomoyuki Takabatake, Ryota Nakamura

    ASIAN AND PACIFIC COASTS 2017: PROCEEDINGS OF THE 9TH INTERNATIONAL CONFERENCE ON APAC 2017   129 - 138   2018

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    DOI: 10.1142/9789813233812_0013

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  • Debris damming loads and effect in tsunami-like events Reviewed

    Stolle Jacob, Nistor Loan, Takabatake Tomoyuki, Goseberg Nils, Petriu Emil, Shibayama Tomoya

    6th International Disaster Mitigation Specialty Conference 2018, Held as Part of the Canadian Society for Civil Engineering Annual Conference 2018   70 - 80   2018

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  • Debris impacts and effects on structures

    Jacob Stolle, Nils Goseberg, Ioan Nistor, Tomoya Shibayama

    Handbook of Coastal and Ocean Engineering: Expanded Edition   1-2   457 - 479   2017.12

  • Modelling a storm surge under future climate scenarios: case study of extratropical cyclone Gudrun (2005) Reviewed

    Martin Mall, Ulo Suursaar, Ryota Nakamura, Tomoya Shibayama

    NATURAL HAZARDS   89 ( 3 )   1119 - 1144   2017.12

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    DOI: 10.1007/s11069-017-3011-3

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  • Overtopping of Coastal Structures by Tsunami Waves Reviewed

    Miguel Esteban, Toni Glasbergen, Tomoyuki Takabatake, Bas Hofland, Shinsaku Nishizaki, Yuta Nishida, Jacob Stolle, Ioan Nistor, Jeremy Bricker, Hiroshi Takagi, Tomoya Shibayama

    GEOSCIENCES   7 ( 4 )   1 - 17   2017.12

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    DOI: 10.3390/geosciences7040121

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  • How to Carry Out Bathymetric and Elevation Surveys on a Tight Budget: Basic Surveying Techniques for Sustainability Scientists Reviewed

    Esteban, M, Takagi, H, Mikami, T, Bahbouh, L, Becker, A, Nurse, L, Shibayama, T, Nagdee, M

    INTERNATIONAL JOURNAL OF SUSTAINABLE FUTURE FOR HUMAN SECURITY   5 ( 2 )   86 - 91   2017.11

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    DOI: 10.24910/jsustain/5.2/8691

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  • A STUDY ON EFFECTIVENESS OF TSUNAMI COUNTERMEASURE BASED ON TSUNAMI EVACUATION SIMULATION CONSIDERING VISITOR'S BEHAVIOR Reviewed

    TAKABATAKE Tomoyuki, SHIBAYAMA Tomoya

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)   73 ( 2 )   I_1507 - I_1512   2017.11

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    &nbsp;In this study, the authors developed a tsunami evacuation simulation model considering both local residents and visitors behavior. Using the simulation model, the effectivenesses of enhancing tenacity of a seawall and cooporations among evacuees are investigated in Yuigahama beach, Kamakura, Japan. It was found that enhancing tenacity of a seawall would decrease mortality rate. However, the effects would become minor when its hight is not sufficient. Guiding visitors to an evacuation place would also be helpful to decrease mortality rate but this may cause heavy congestions on the roads. When making a tsunami evacuation plan in a sightseeing location, it is necessary to consider effects of evacuees' congestions.

    DOI: 10.2208/kaigan.73.I_1507

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  • Entrainment and Transport Dynamics of Shipping Containers in Extreme Hydrodynamic Conditions Reviewed

    Jacob Stolle, Ioan Nistor, Nils Goseberg, Takahito Mikami, Tomoya Shibayama

    COASTAL ENGINEERING JOURNAL   59 ( 3 )   2017.9

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    DOI: 10.1142/S0578563417500115

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  • Experimental Investigation of Debris-Induced Loading in Tsunami-Like Flood Events Reviewed

    Jacob Stolle, Tomoyuki Takabatake, Takahito Mikami, Tomoya Shibayama, Nils Goseberg, Ioan Nistor, Emil Petriu

    GEOSCIENCES   7 ( 3 )   2017.9

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    DOI: 10.3390/geosciences7030074

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  • A method for tsunami risk assessment: a case study for Kamakura, Japan Reviewed

    Non Okumura, Sebastiaan N. Jonkman, Miguel Esteban, Bas Hofland, Tomoya Shibayama

    NATURAL HAZARDS   88 ( 3 )   1451 - 1472   2017.9

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    DOI: 10.1007/s11069-017-2928-x

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  • Simulated tsunami evacuation behavior of local residents and visitors in Kamakura, Japan Reviewed

    Tomoyuki Takabatake, Tomoya Shibayama, Miguel Esteban, Hidenori Ishii, Go Hamano

    INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION   23   1 - 14   2017.8

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    DOI: 10.1016/j.ijdrr.2017.04.003

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  • Risk awareness and intended tsunami evacuation behaviour of international tourists in Kamakura City, Japan Reviewed

    Ricardo San Carlos Arce, Motoharu Onuki, Miguel Esteban, Tomoya Shibayama

    INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION   23   178 - 192   2017.8

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    DOI: 10.1016/j.ijdrr.2017.04.005

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  • Experimental Investigations of Debris Dynamics over a Horizontal Plane Reviewed

    Ioan Nistor, Nils Goseberg, Jacob Stolle, Takahito Mikami, Tomoya Shibayama, Ryota Nakamura, Shunya Matsuba

    JOURNAL OF WATERWAY PORT COASTAL AND OCEAN ENGINEERING   143 ( 3 )   2017.5

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    DOI: 10.1061/(ASCE)WW.1943-5460.0000371

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  • An experimental study of wave-induced particle velocities in fluid mud layer Reviewed

    Mohsen Soltanpour, Hadi Shamsnia, Tomaya Shibayama, Ryota Nakamura, Akifumi Tatekoji

    Coastal Engineering Proceedings   1 ( 35 )   28   2017.5

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    DOI: 10.9753/icce.v35.sediment.28

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  • Tralck analysis, simulation, and field survey of the 2013 Typhoon Haiyan storm surge Reviewed

    H. Takagi, M. Esteban, T. Shibayama, T. Mikami, R. Matsumaru, M. De Leon, N. D. Thao, T. Oyama, R. Nakamura

    JOURNAL OF FLOOD RISK MANAGEMENT   10 ( 1 )   42 - 52   2017.3

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    DOI: 10.1111/jfr3.12136

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  • IMPACT ASSESSMENT OF SLOSHING IN BAYS AND LAKES Reviewed

    OHIRA Koichiro, TAKABATAKE Tomoyuki, MIKAMI Takahito, SHIBAYAMA Tomoya

    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)   73 ( 1 )   56 - 66   2017

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    &nbsp;Water level fluctuations resembling long period tsunami waves, which differ from normal wind waves, were observed immediately after the Great East Japan Earthquake of 2011 in multiple locations, such as lakes in Yamanashi Prefecture, the fjords of Norway, and other sites located far away from the epicenter. Very little research on similar abnormal water level fluctuations has been conducted thus far and, in many cases, these studies have treated the phenomena as seiches. However, researchers have not established concrete wave development mechanisms and evaluation methods, and their awareness of this phenomenon and disaster prevention remains low. In this study, we sought to select a quantitative impact assessment method and learn more about this phenomenon. We used previous research and eyewitness accounts to judge that onsite slosh dynamics caused the waves to develop, and we attempted to recreate this phenomenon using a 3-D slosh dynamic analysis. After comparing laboratory results to verify the validity of the analysis, we recreated past examples of waves and also made future predictions. As a result, we were able to recreate abnormal water level fluctuations based on this method. In addition, we identified water damage risks to inland lakes and waterways of inner parts of bays. These are different from risks posed by tsunamis. It is forms immediately after the onset of an earthquake.

    DOI: 10.2208/jscejoe.73.56

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  • Tsunami Evacuation during the Off-Fukushima Earthquake of 22 November 2016: Interview Survey in Shiogama City, Miyagi Prefecture Reviewed

    36 ( 1 )   43 - 50   2017

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  • Experimental analysis of debris motion due the obstruction from fixed obstacles in tsunami-like flow conditions Reviewed

    N. Goseberg, J. Stolle, I. Nistor, T. Shibayama

    COASTAL ENGINEERING   118   35 - 49   2016.12

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    DOI: 10.1016/j.coastaleng.2016.08.012

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  • Failure Mechanisms and Local Scour at Coastal Structures Induced by Tsunami Reviewed

    Mantripathi Prabath Ravindra Jayaratne, Buddhika Premaratne, Abimbola Adewale, Takahito Mikami, Shunya Matsuba, Tomoya Shibayama, Miguel Esteban, Ioan Nistor

    COASTAL ENGINEERING JOURNAL   58 ( 4 )   2016.12

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    DOI: 10.1142/S0578563416400179

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  • Nonintrusive Spatiotemporal Smart Debris Tracking in Turbulent Flows with Application to Debris-Laden Tsunami Inundation Reviewed

    N. Goseberg, I. Nistor, T. Mikami, T. Shibayama, J. Stolle

    JOURNAL OF HYDRAULIC ENGINEERING   142 ( 12 )   2016.12

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    DOI: 10.1061/(ASCE)HY.1943-7900.0001199

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  • Erratum to "Stability of breakwater armor units against tsunami attacks" [J. Waterway, Port, Coastal, Ocean Eng., (2014), 188-198] DOI:10.1061/(ASCE)WW.1943-5460.0000227 Reviewed

    Miguel Esteban, Ravindra Jayaratne, Takahito Mikami, Izumi Morikubo, Tomoya Shibayama, Nguyen Danh Thao, Koichiro Ohira, Akira Ohtani, Yusuke Mizuno, Mizuho Kinoshita, Shunya Matsuba

    Journal of Waterway, Port, Coastal and Ocean Engineering   142 ( 4 )   2016.7

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    DOI: 10.1061/(ASCE)WW.1943-5460.0000335

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  • Erratum for Stability of Breakwater Armor Units against Tsunami Attacks (vol 140, pg 188, 2014) Reviewed

    Esteban Miguel, Jayaratne Ravindra, Mikami Takahito, Morikubo Izumi, Shibayama Tomoya, Nguyen Danh Thao, Ohira Koichiro, Ohtani Akira, Mizuno Yusuke, Kinoshita Mizuho, Matsuba Shunya

    JOURNAL OF WATERWAY PORT COASTAL AND OCEAN ENGINEERING   142 ( 4 )   2016.7

  • Future typhoon and storm surges under different global warming scenarios: case study of typhoon Haiyan (2013) Reviewed

    Ryota Nakamura, Tomoya Shibayama, Miguel Esteban, Takumu Iwamoto

    NATURAL HAZARDS   82 ( 3 )   1645 - 1681   2016.7

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    DOI: 10.1007/s11069-016-2259-3

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  • Storm Surge Awareness in the Philippines Prior to Typhoon Haiyan: A Comparative Analysis with Tsunami Awareness in Recent Times Reviewed

    Miguel Esteban, Ven Paolo Valenzuela, Ryo Matsumaru, Takahito Mikami, Tomoya Shibayama, Hiroshi Takagi, Nguyen Danh Thao, Mario De Leon

    COASTAL ENGINEERING JOURNAL   58 ( 1 )   2016.3

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    DOI: 10.1142/S057856341640009X

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  • Storm Surge Heights and Damage Caused by the 2013 Typhoon Haiyan Along the Leyte Gulf Coast Reviewed

    Takahito Mikami, Tomoya Shibayama, Hiroshi Takagi, Ryo Matsumaru, Miguel Esteban, Nguyen Danh Thao, Mario De Leon, Ven Paolo Valenzuela, Takahiro Oyama, Ryota Nakamura, Kenzou Kumagai, Siyang Li

    COASTAL ENGINEERING JOURNAL   58 ( 1 )   2016.3

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    DOI: 10.1142/S0578563416400052

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  • Storm surge and evacuation in urban areas during the peak of a storm Reviewed

    Hiroshi Takagi, Siyang Li, Mario de Leon, Miguel Esteban, Takahito Mikami, Ryo Matsumaru, Tomoya Shibayama, Ryota Nakamura

    COASTAL ENGINEERING   108   1 - 9   2016.2

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    DOI: 10.1016/j.coastaleng.2015.11.002

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  • Estimation of increase in storm surge damage due to climate change and sea level rise in the Greater Tokyo area Reviewed

    Sayaka Hoshino, Miguel Esteban, Takahito Mikami, Hiroshi Takagi, Tomoya Shibayama

    NATURAL HAZARDS   80 ( 1 )   539 - 565   2016.1

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    DOI: 10.1007/s11069-015-1983-4

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  • EVALUATION OF FLOATING AND SLIPPING OF OIL TANKS BY TSUNAMI AND THE PREDICTION OF OIL SPILLED IN TOKYO BAY Reviewed

    MORINAGA Takayuki, MIKAMI Takahito, SHIBAYAMA Tomoya

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)   72 ( 2 )   I_433 - I_438   2016

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    &nbsp;The 2011 Tohoku Tsunami caused severe damage in coastal areas. In Kesennuma, oil spilled from oil tanks that was attacked by the tsunami. The present study aims to evaluate the safety of oil tanks against a tsunami and understand the behavior of spilled oil in Tokyo Bay. The results of tsunami numerical simulation with Keicho Earthquake scenario show that the tsunami reaches the oil tanks 95 minutes after the shock. The maximum inundation depth around the tanks is about 2.3 m. The oil tanks suffer damage when the storage rate of the tanks is less than 20 %. The amount of spilled oil is about 5000 kl. To understand the characteristics of oil dispersion and diffusion over the sea surface, the sensitivity of external forces on the behavior of oil is analyzed. The numerical results show that wind direction and wind speed give a significant influence on the oil spilling behavior. On the other hand, the influence of water temperture is small.

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  • EVALUATION OF ATMOSPHERIC AND OCEANIC ENVIROMENTS GOVERNING INTENSITY OF TYPHOON AND STORM SURGE

    NAKAMURA Ryota, SHIBAYAMA Tomoya

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)   72 ( 2 )   I_1495 - I_1500   2016

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    &nbsp;The object of this study is to numericall investigate atmospheric and oceanic environments mainly governing the intensity of a typhoon and its storm surge. An individual effect of sea surface temperature (SST), stratospheric and tropospheric air temperature (SAT, TAT), and relative humidity (RH) to intensity of typhoons and storm surges are investigated, via making use of pusedo global warming methodology employing 26 Global Climate Model results of CMIP5's RCP 8.5 scenario. As a result, the change in both SAT and TAT can cause to decrease a typhoon and its storm surge intensity. One of the reasons is that latent heat flux above ocean can be dampeded by high air temperature in lower troposherer. Furthremore, the expected small increments of RH have relatively a little influence on the intensity of typhoon, compared to those of SST, SAT and TAT. As a conclusion, it can be said that future environments composed of both low TAT and high SST have a positive inpact on the high intensity of a typhoon and storm surge.

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  • Spectral analysis of irregular waves in wave-mud and wave-current-mud interactions Reviewed

    Farzin Samsami, Mohsen Soltanpour, Tomoya Shibayama

    OCEAN DYNAMICS   65 ( 9-10 )   1305 - 1320   2015.9

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    DOI: 10.1007/s10236-015-0864-4

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  • Handbook of Coastal Disaster Mitigation for Engineers and Planners

    Miguel Esteban, Hiroshi Takagi, Tomoya Shibayama

    Handbook of Coastal Disaster Mitigation for Engineers and Planners   1 - 765   2015.7

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    DOI: 10.1016/C2013-0-12806-1

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  • Stability of breakwaters against Tsunami attack

    Miguel Esteban, Nguyen Danh Thao, Hiroshi Takagi, Ravindra Jayaratne, Takahito Mikami, Tomoya Shibayama

    Handbook of Coastal Disaster Mitigation for Engineers and Planners   293 - 323   2015.7

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    DOI: 10.1016/B978-0-12-801060-0.00015-0

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  • Estimation of the current risk to human damage life posed by future tsunamis in Japan

    Sho Yamao, Miguel Esteban, Nam Yi Yun, Takahito Mikami, Tomoya Shibayama

    Handbook of Coastal Disaster Mitigation for Engineers and Planners   257 - 275   2015.7

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    DOI: 10.1016/B978-0-12-801060-0.00013-7

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  • Tsunami disasters in remote islands: 2009 Samoan and 2010 Mentawai Islands tsunamis

    Takahito Mikami, Tomoya Shibayama

    Handbook of Coastal Disaster Mitigation for Engineers and Planners   75 - 91   2015.7

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    DOI: 10.1016/B978-0-12-801060-0.00005-8

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  • Storm surge in New York City caused by hurricane Sandy in 2012

    Takahito Mikami, Miguel Esteban, Tomoya Shibayama

    Handbook of Coastal Disaster Mitigation for Engineers and Planners   115 - 131   2015.7

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    DOI: 10.1016/B978-0-12-801060-0.00007-1

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  • Storm surge due to 2008 cyclone Nargis in Myanmar and post-cyclone preparedness activities

    Khandker Masuma Tasnim, Miguel Esteban, Tomoya Shibayama, Hiroshi Takagi

    Handbook of Coastal Disaster Mitigation for Engineers and Planners   55 - 74   2015.7

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    DOI: 10.1016/B978-0-12-801060-0.00004-6

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  • 2005 storm surge by hurricane Katrina

    Tomoya Shibayama

    Handbook of Coastal Disaster Mitigation for Engineers and Planners   21 - 34   2015.7

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    DOI: 10.1016/B978-0-12-801060-0.00002-2

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  • Destruction of coastal structures after the 2011 Great East Japan earthquake and tsunami

    Ravindra Jayaratne, Buddhika Premaratne, Takahito Mikami, Shunya Matsuba, Tomoya Shibayama, Miguel Esteban, Martin Marriott

    Handbook of Coastal Disaster Mitigation for Engineers and Planners   349 - 362   2015.7

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    DOI: 10.1016/B978-0-12-801060-0.00017-4

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  • Observations and numerical simulation of storm surge due to cyclone sidr 2007 in Bangladesh

    Khandker Masuma Tasnim, Miguel Esteban, Tomoya Shibayama

    Handbook of Coastal Disaster Mitigation for Engineers and Planners   1 - 35   2015.7

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    DOI: 10.1016/B978-0-12-801060-0.00003-4

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  • Stochastic design of caisson breakwaters: Lessons from past failures and coping with climate change

    Hiroshi Takagi, Miguel Esteban, Tomoya Shibayama

    Handbook of Coastal Disaster Mitigation for Engineers and Planners   635 - 673   2015.7

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    DOI: 10.1016/B978-0-12-801060-0.00030-7

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  • Adaptation to sea level rise in Tokyo Bay: Opportunities for a storm surge barrier?

    Miguel Esteban, Sebastiaan N. Jonkman, Sayaka Hoshino, María José Ruiz-Fuentes, Takahito Mikami, Hiroshi Takagi, Tomoya Shibayama, Mathijs Van Ledden

    Handbook of Coastal Disaster Mitigation for Engineers and Planners   723 - 747   2015.7

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    DOI: 10.1016/B978-0-12-801060-0.00033-2

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  • 2004 Indian Ocean tsunami

    Tomoya Shibayama

    Handbook of Coastal Disaster Mitigation for Engineers and Planners   3 - 19   2015.7

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    DOI: 10.1016/B978-0-12-801060-0.00001-0

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  • Lessons from the last 10 years of coastal disasters

    Esteban, Miguel, Takagi, Hiroshi, Shibayama, Tomoya

    Handbook of Coastal Disaster Mitigation for Engineers and Planners   xxv - xxx   2015.7

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    Shibayama, Tomoya

    Handbook of Coastal Disaster Mitigation for Engineers and Planners   2015.7

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  • Estimation of maximum possible wave heights in surf zone Reviewed

    Winyu Rattanapitikon, Khiem Quang Tran, Tomoya Shibayama

    Coastal Engineering Journal   57   2015.6

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    DOI: 10.1142/S0578563415500011

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  • Estimation of Maximum Possible Wave Heights in Surf Zone Reviewed

    Winyu Rattanapitikon, Khiem Quang Tran, Tomoya Shibayama

    COASTAL ENGINEERING JOURNAL   57 ( 2 )   2015.6

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    DOI: 10.1142/S0578563415500011

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  • Typhoon Haiyan 2013 Evacuation Preparations and Awareness Reviewed

    Esteban, M, Valenzuela, V, P. Yun, N. Y, Mikami, T, Shibayama, T, Matsumaru, R, Takagi, H, Thao, N. D, De Leon, M, Oyama, T, Nakamura, R

    INTERNATIONAL JOURNAL OF SUSTAINABLE FUTURE FOR HUMAN SECURITY   3 ( 1 )   37 - 45   2015.3

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    DOI: 10.24910/jsustain/3.1/3745

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  • A two-dimensional experimental-numerical approach to investigate wave transformation over muddy beds Reviewed

    Mohsen Soltanpour, S. Abbas Haghshenas, Tomoya Shibayama

    OCEAN DYNAMICS   65 ( 2 )   295 - 310   2015.2

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    DOI: 10.1007/s10236-014-0797-3

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  • Adaptation to an increase in typhoon intensity and sea level rise by Japanese ports

    Miguel Esteban, Hiroshi Takagi, Tomoya Shibayama

    Climate Change and Adaptation Planning for Ports   117 - 132   2015.1

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    DOI: 10.4324/9781315756813-18

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  • Field observation and numerical simulation of past and future storm surges in the Bay of Bengal: case study of cyclone Nargis Reviewed

    Khandker Masuma Tasnim, Tomoya Shibayama, Miguel Esteban, Hiroshi Takagi, Koichiro Ohira, Ryota Nakamura

    NATURAL HAZARDS   75 ( 2 )   1619 - 1647   2015.1

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    DOI: 10.1007/s11069-014-1387-x

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  • EVALUATION OF GRAVEL NOURISHMENT AT AKIYA COAST, KANAGAWA PREFECTURE Reviewed

    SHIBAYAMA Tomoya, IZUMI Masatoshi, SATO Akira, SAWANO Yasushi, HIRAO Atsushi

    PROCEEDINGS OF THE JAPANESE CONFERENCE ON COASTAL ENGINEERING   71 ( 2 )   I_769 - I_774   2015

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    Akiya coast is located in Miura peninsula, Kanagawa prefecture and is the first coast that is artificially nourished with gravels over sand beach in Japan. Coastal erosion started in early 1970s due to short supply of sand to the coast after completion of coastal road. The sandy coast was eroded gradually after construction of a breakwater of fishery port in 1980s and was rapidly eroded after 2000. Gravel nourishment started from 2006 after three years discussions in the consensus formation meeting consisted with coastal engineers, local residents, fishermen and members of environmental NGOs in the area. The median diameter of gravels is 15mm and the total amount of nourished gravel is 92,600m&lt;sup&gt;3&lt;/sup&gt; during six years. Now the coast is stable with gravels distributed in the shoreline. The gravels are continuously transported in longshore direction and additional maintenance works are required after completion of nourishment.

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  • FIELD SURVEY AND MECHANISM OF STORM SURGE GENERATION INVOKED BY THE LOW PRESSURE WITH RAPID DEVELOPMENT IN NEMURO HOKKAIDO IN DECEMBER 2014 Reviewed

    NAKAMURA Ryota, IWAMOTO Takumu, SHIBAYAMA Tomoya, MIKAMI Takahito, MATSUBA Shunya, MAELL Martin, TAKEKOUJI Akihumi, TANOKURA Yusuke

    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)   71 ( 2 )   I_31 - I_36   2015

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    DOI: 10.2208/jscejoe.71.I_31

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  • EFFECT OF COASTAL FOREST IN REDUCING OVERFLOWING TSUNAMI FORCE AROUND COASTAL DIKES Reviewed

    MATSUBA Shunya, MIKAMI Takahito, SHIBAYAMA Tomoya

    PROCEEDINGS OF THE JAPANESE CONFERENCE ON COASTAL ENGINEERING   71 ( 2 )   I_871 - I_876   2015

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    Many coastal dikes in Tohoku area in Japan were damaged due to the 2011 Great Eastern Japan Earthquake Tsunami. The primary failure mode of these dikes was scour failure at the leeward toe by the overflowing tsunami. However, the forces exerted by the tsunami wave against the dikes and scour were reduced to the presence of some obstacles (such as coastal forest) located behind the dike. In order to analyze how tsunamis affected coastal dikes and effect of coastal forest in reducing tsunami force, the authors carried out post-tsunami field surveys and laboratory tests using dikes and different coastal forest models. The critical failure mechanism of dikes was analyzed and co-related to tsunami overflowing pattern. In addition, the experimental results show how coastal forest can help to reduce the damage caused by the tsunami to coastal dikes by increasing water depth and changing the tsunami motion pattern from supercritical flow to subcritical flow. Thus, the placement of coastal forests behind dikes can help to increase their resilience against tsunami attack.

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  • LABORATORY STUDY ON TSUNAMI REDUCTION EFFECT OF TEIZAN CANAL Reviewed

    WATANABE Shun, MIKAMI Takahito, SHIBAYAMA Tomoya

    PROCEEDINGS OF THE JAPANESE CONFERENCE ON COASTAL ENGINEERING   71 ( 2 )   I_301 - I_306   2015

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    During the 2011 Tohoku Tsunami, there were eyewitness testimonies that tsunami inundation height was reduced due to Teizan-canal along the coast of Sendai Plain. The present study aims to understand the tsunami reduction effect of a canal by using the field data and the results of a laboratory experiment. The field data obtained from the 2011 event showed that tsunami inundation heights were reduced due to Teizan-canal at some locations. The laboratory experiments were carried out in a tsunami basin with a chamber type tsunami generator. In order to investigate the tsunami reduction effect of a canal, the amount of overflowing water behind a canal model was measured in the experiments. The tsunami height, tsunami length, and the water depth in the canal model were changed to test the sensitivity. The results of the experiment showed that the canal reduced the amount of overflowing water. It was found that the reduction effect with a small water depth in the canal was larger than that with large water depth, and the waveform could affect the reduction effect.

    DOI: 10.2208/kaigan.71.I_301

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  • A cross-shore beach profile evolution model Reviewed

    Mantripathi Prabath, Ravindra Jayaratne, Md Rezaur Rahman, Tomoya Shibayama

    Coastal Engineering Journal   56   2014.12

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    DOI: 10.1142/S057856341450020X

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  • A CROSS-SHORE BEACH PROFILE EVOLUTION MODEL Reviewed

    Mantripathi Prabath Ravindra Jayaratne, Md Rezaur Rahman, Tomoya Shibayama

    COASTAL ENGINEERING JOURNAL   56 ( 4 )   2014.12

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    DOI: 10.1142/S057856341450020X

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  • Tsunamis from the Arica-Tocopilla source region and their effects on ports of Central Chile Reviewed

    Rafael Aranguiz, Tomoya Shibayama, Yoshiki Yamazaki

    NATURAL HAZARDS   71 ( 1 )   175 - 202   2014.3

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    DOI: 10.1007/s11069-013-0906-5

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  • Tsunami vulnerability evaluation in the Mentawai islands based on the field survey of the 2010 tsunami Reviewed

    Takahito Mikami, Tomoya Shibayama, Miguel Esteban, Koichiro Ohira, Jun Sasaki, Takayuki Suzuki, Hendra Achiari, Teguh Widodo

    NATURAL HAZARDS   71 ( 1 )   851 - 870   2014.3

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    DOI: 10.1007/s11069-013-0936-z

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  • Smoothed-Particle Hydrodynamics Numerical Modeling of Structures Impacted by Tsunami Bores Reviewed

    Philippe St-Germain, Ioan Nistor, Ronald Townsend, Tomoya Shibayama

    JOURNAL OF WATERWAY PORT COASTAL AND OCEAN ENGINEERING   140 ( 1 )   66 - 81   2014.1

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    DOI: 10.1061/(ASCE)WW.1943-5460.0000225

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  • Nationwide post event survey and analysis of the 2011 Tohoku earthquake tsunami Reviewed

    Nobuhito Mori, Tomoyuki Takahashi, Shun Etsu Hamaura, Kazuya Miyakawa, Katsuhiko Tanabe, Keisuke Tanaka, Mitsuyuki Tanaka, Tsukasa Watanabe, Hideo Matsutomi, Kazunori Naoe, Takuya Noumi, Erika Yamaguchi, Shoichi Ando, Yushiro Fujii, Toshihide Kashima, Yasuo Okuda, Bun'ichiro Shibazaki, Tsutomu Sakakiyama, Masafumi Matsuyama, Takumi Yoshii, Kazuhisa Goto, Takashi Aida, Yuuji Kurata, Mabumi Miyazaki, Katuya Shutou, Jun Suzuki, Hikari Takeuchi, Takayuki Nakamura, Osamu Fujiwara, Kyoko Kagohara, Haruo Kimura, Junko Komatsubara, Yukari Miyashita, Yuichi Namegaya, Yuki Sawai, Masanobu Shishikura, Koichiro Tanigawa, Hermann Fritz, Ken Ichi Uzaki, Mikio Sasaki, Masato Minami, Hitoshi Endou, Masaki Hashimoto, Yutaka Kobashigawa, Masamitsu Kumagai, Masahiro Ietsune, Kazuhiko Nakamura, Aditya Gusman, Kazuomi Hirakawa, Kei Loki, Yugo Nakamura, Takafumi Nakayama, Yuichi Nishimura, Puma Putra, Ayumi Saruwatari, Yasunori Watanabe, Tomohito Yamada, Yasunori Nabetani, Hisamichi Nobuoka, Takashi Tamada, Yuriko Matsubayashi, Toshinori Ogasawara, Shigeki Sakai, Masao Abe, Yutaka Hayashi, Hideki Iino, Kazuhiro Iwakiri, Kazuhiro Kimura, Kenji Maeda, Masami Okada, Hiroaki Tsushima, Taro Kakinuma, Kei Yamashita, Shinya Umeda, Takahiro Nakamura, Shuji Seto, Kurokawa Takahiro, Tetsuya Torayashiki, Gozo Tsujimoto, Kohji Uno, Shoichi Yoshioka, Norio Dewa, Tetsuya Hayashi, Mitsuyoshi Kitamura, Shusaku Kuroda, Akihiko Nakahira, Takeshi Nozawa, Kazuya Taniwaki, Kunio Ohtoshi, Takashi Aoyama, Tatsuo Chiba, Hiroshi Enomoto, Kazunori Hirahara, Shigeki Murai, Hiroshi Narayama, Satoshi Yamanaka, Hitoshi Yamazaki, Satoshi Yoshiiri, Ryoukei Azuma, Yasuyuki Baba

    Coastal Engineering Journal   54 ( 1 )   2014.1

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    DOI: 10.1142/S0578563412500015

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  • FIELD SURVEY AND ANALYSIS OF STORM SURGE CAUSED BY THE 2013 TYPHOON YOLANDA (HAIYAN) Reviewed

    SHIBAYAMA Tomoya, MATSUMARU Ryo, TAKAGI Hiroshi, LEON Mario P. de, ESTEBAN Miguel, MIKAMI Takahito, OYAMA Takahiro, NAKAMURA Ryota

    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)   70 ( 2 )   I_1212 - I_1217   2014

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    DOI: 10.2208/jscejoe.70.I_1212

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  • Stability of breakwater armor units against tsunami attacks Reviewed

    Miguel Esteban, Ravindra Jayaratne, Takahito Mikami, Izumi Morikubo, Tomoya Shibayama, Nguyen Danh Thao, Koichiro Ohira, Akira Ohtani, Yusuke Mizuno, Mizuho Kinoshita, Shunya Matsuba

    Journal of Waterway, Port, Coastal and Ocean Engineering   140 ( 2 )   188 - 198   2014

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    DOI: 10.1061/(ASCE)WW.1943-5460.0000227

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  • Prediction of Storm Surge at Tokyo Bay under RCP 8.5 Scenario by Using Meteorological-Surge-Tide Coupled Model Reviewed

    IWAMOTO Takumu, NAKAMURA Ryota, OYAMA Takahiro, MIZUKAMI Ryo, SHIBAYAMA Tomoya

    PROCEEDINGS OF THE JAPANESE CONFERENCE ON COASTAL ENGINEERING   70 ( 2 )   I_1261 - I_1265   2014

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    The aims of this study are to examine the reproducibility of new Meteorological-Surge-Tide coupled model and to estimate the effect of global warming to storm surge. In order to examine the model, the case of typhoon Roke (2011) is taken to be an example since the sea level elevation in this case is the highest record in Tokyo Bay during recent 10 years. For the case of typhoon Roke, the tendency of time history of water level is well reproduced though the maximum value is underestimated. The future case of typhoon Roke is also calculated. The sea level at Shibaura is increased for around 20cm and it is also increased around 40cm at Funabashi. These results imply that the coupled model has good performance but there are still some differences of sea level at Tokyo Bay due to the effect of complex geography.

    DOI: 10.2208/kaigan.70.I_1261

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  • Comparison between simulation of storm surge invoked by typhoon &ldquo;Yolanda&rdquo; and field results Reviewed

    NAKAMURA Ryota, OYAMA Takahiro, SHIBAYAMA Tomoya, MATSUMARU Ryo, TAKAGI Hiroshi, ESTEBAN Miguel, MIKAMI Takahito

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)   70 ( 2 )   I_236 - I_240   2014

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    The catastrophic typhoon "Yolanda" on Nov. 2013 invoked storm surge in the coastal area of the Philippines. The storm surge made the coastal regions to the devastation and maximum water height reached 5m in the Tacloban area. This paper presents the comparison between storm surge simulated results from atmospheric - storm surge- wave- tide coupled model and the observation measured by The 2013 Philippines Storm Surge Joint Survey Group headed up by Prof T. Shibayama. In this study, the TC-Bogus scheme is used in order to simulate accurate typhoon. The simulated storm surge results reached almost 5m in the Tacloban area. The coupled model including TC-Bogus scheme gives accurate simulations for estimating storm surge.

    DOI: 10.2208/kaigan.70.I_236

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  • STUDY ON DISASTER INFORMATION DISSEMINATION AND PEOPLE'S RESPONSE FOR EVACUATION &ndash;THE CASE OF THE 2013 TYPHOON YOLANDA (HAIYAN)&ndash; Reviewed

    ESTEBAN Miguel, MATSUMARU Ryo, TAKAGI Hiroshi, MIKAMI Takahito, SHIBAYAMA Tomoya, LEON Mario, P. de, VALENZUELA Ven Paolo, NGUYEN Thao Danh

    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)   70 ( 2 )   I_1218 - I_1223   2014

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    DOI: 10.2208/jscejoe.70.I_1218

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  • ANALYSIS OF THE 2013 TYPHOON YOLANDA (HAIYAN) AND SUBSEQUENT STORM SURGE Reviewed

    TAKAGI Hiroshi, MIKAMI Takahito, SHIBAYAMA Tomoya, MATSUMARU Ryo, LEON Mario de, ESTEBAN Miguel, NGUYEN Thao Danh, NAKAMURA Ryota

    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)   70 ( 2 )   I_1206 - I_1211   2014

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    DOI: 10.2208/jscejoe.70.I_1206

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  • EFFECT OF SUBMARINE CANYONS ON TSUNAMI PROPAGATION: A CASE STUDY OF THE BIOBIO CANYON, CHILE Reviewed

    Rafael Aranguiz, Tomoya Shibayama

    COASTAL ENGINEERING JOURNAL   55 ( 4 )   2013.12

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    DOI: 10.1142/S0578563413500162

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  • Analysis of Evacuation Patterns in Countries Affected by Recent Tsunamis: Emergence of a Global Tsunami Culture Reviewed

    Esteban, M, Tsimopoulou, V, Mikami, T, Yun, N, Suppasri, A, Shibayama, T

    7th International Conference on Asian and Pacific Coasts (APAC2013)   2013.9

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  • VERIFICATION AND EXTENSION OF GODA FORMULAS FOR COMPUTING REPRESENTATIVE WAVE HEIGHTS TRANSFORMATION Reviewed

    Winyu Rattanapitikon, Tomoya Shibayama

    COASTAL ENGINEERING JOURNAL   55 ( 3 )   2013.9

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    DOI: 10.1142/S0578563413500095

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  • Recent tsunamis events and preparedness: Development of tsunami awareness in Indonesia, Chile and Japan Reviewed

    M. Esteban, V. Tsimopoulou, T. Mikami, N. Y. Yun, A. Suppasri, T. Shibayama

    INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION   5   84 - 97   2013.9

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    DOI: 10.1016/j.ijdrr.2013.07.002

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  • Classification of Tsunami and Evacuation Areas Reviewed

    Tomoya Shibayama, Miguel Esteban, Ioan Nistor, Hiroshi Takagi, Nguyen Danh Thao, Ryo Matsumaru, Takahito Mikami, Rafael Aranguiz, Ravindra Jayaratne, Koichiro Ohira

    NATURAL HAZARDS   67 ( 2 )   365 - 386   2013.6

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    DOI: 10.1007/s11069-013-0567-4

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  • EFFECT OF SEA LEVEL RISE AND INCREASE IN TYPHOON INTENSITY ON COASTAL STRUCTURES IN TOKYO BAY

    Sayaka Hoshino, Miguel Esteban, Takahito Mikami, Tomoyuki Takabatake, Tomoya Shibayama

    COASTAL STRUCTURES 2011, VOL 1 & 2   141 - 152   2013

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  • Analysis of Tsunami Culture in Countries Affected by Recent Tsunamis Reviewed

    Miguel Esteban, Vana Tsimopoulou, Tomoya Shibayama, Takahito Mikami, Koichiro Ohira

    3RD INTERNATIONAL CONFERENCE ON SUSTAINABLE FUTURE FOR HUMAN SECURITY, SUSTAIN 2012   17   693 - 702   2013

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    DOI: 10.1016/j.proenv.2013.02.086

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  • SEA LEVEL RISE AND THE INCREASE IN RUBBLE MOUND BREAKWATER DAMAGE Reviewed

    Miguel Esteban, Hiroshi Takagi, Tomoya Shibayama

    COASTAL STRUCTURES 2011, VOL 1 & 2   130 - 140   2013

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  • Present and future tsunami and storm surge protections in Tokyo and Sagami bays Reviewed

    Proceedings of the 7th International Conference on Asian and Pacific Coasts (APAC)   764 - 766   2013

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  • ANALYSIS OF INUNDATION DISASTER AND MITIGATION IN WATERFRONT AREA BASED ON FIELD SURVEY OF STORM SURGE IN NEW YORK CITY CAUSED BY 2012 HURRICANE SANDY Reviewed

    MIKAMI Takahito, SHIBAYAMA Tomoya, ESTEBAN Miguel

    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)   69 ( 2 )   I_982 - I_987   2013

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    On October 29th, 2012, Hurricane Sandy made landfall along the east coast of the United States and generated storm surge in the states of New York and New Jersey. The flooding in New York City caused heavy damage on infrastructures such as an electricity and a subway system. In this paper, the actual situation of this disaster in New York City are summarized based on the results of a field survey and information on public websites and lessons for increasing preparedness in Japanese waterfront area are discussed.

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  • ESTIMATION OF STORM SURGE AND PROPOSAL OF THE COASTAL PROTECTION METHOD IN TOKYO BAY Reviewed

    HOSHINO Sayaka, SHIBAYAMA Tomoya, ESTEBAN Miguel, TAKAGI Hiroshi, MIKAMI Takahito, TAKABATAKE Tomoyuki

    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)   69 ( 2 )   I_994 - I_999   2013

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    Sea level rise and an increase in typhoon intensity are two of the expected consequences from future climate change. In the present work a methodology to change the intensity of tropical cyclones in Japan was developed, which can be used to assess the inundation risk to different areas of the country. An example of how this would affect one of the worst typhoons to hit the Tokyo Bay area in the 20th century was thus developed, highlighting the considerable dangers associated with this event, and how current sea defences could be under danger of failing by the end of the 21st century. The present results show how this level of defences could be inadequate by the end of the 21st century. Possible solutions to this problem involve raising the level of existing defences or increasing the ground level of reclamated area. The cost of possible countermeasures are calculated and are compared with possible economic loss under flooding. The cost is less than 1 % of possible economic loss in Tokyo metropolitan and 6 % in Kanagawa prefecture.

    DOI: 10.2208/jscejoe.69.I_994

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  • Fluid Motion around Coastal Dyke due to Overflowing Tsunami Reviewed

    MIKAMI Takahito, MATSUBA Shunya, SHIBAYAMA Tomoya

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)   69 ( 2 )   I_991 - I_995   2013

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    DOI: 10.2208/kaigan.69.I_991

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  • WAVE BEHAVIOR IN TOKYO BAY CAUSED BY A TSUNAMI OR LONG-PERIOD GROUND MOTIONS

    Koichiro Ohira, Tomoya Shibayama

    COASTAL STRUCTURES 2011, VOL 1 & 2   1313 - 1324   2013

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  • Applicability of suspended sediment concentration formulae to large-scale beach morphological changes

    Ravindra Jayaratne, Yasufumi Takayama, Tomoya Shibayama

    Proceedings of the Coastal Engineering Conference   2012.12

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  • MODIFIED HEEL PRESSURE FORMULA TO SIMULATE TILTING OF A COMPOSITE CAISSON BREAKWATER Reviewed

    Miguel Esteban, Hiroshi Takagi, Tomoya Shibayama

    COASTAL ENGINEERING JOURNAL   54 ( 4 )   2012.12

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    DOI: 10.1142/S0578563412500222

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  • FIELD SURVEY OF THE 2011 TOHOKU EARTHQUAKE AND TSUNAMI IN MIYAGI AND FUKUSHIMA PREFECTURES Reviewed

    Takahito Mikami, Tomoya Shibayama, Miguel Esteban, Ryo Matsumaru

    COASTAL ENGINEERING JOURNAL   54 ( 1 )   2012.3

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    DOI: 10.1142/S0578563412500118

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  • Field Survey of Tsunami Disaster on Sipora Island, Indonesiaafter Sumatra Earthquake 2010

    8th INTERNATIONAL CONFERENCE ON COASTAL AND PORT ENGINEERING IN DEVELOPING COUNTRIES   2012

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  • SIMULATION AND VIDEO ANALYSIS OF THE 2011 TOHOKU TSUNAMI IN KWSENNUMA Reviewed

    KUKITA Shunichi, SHIBAYAMA Tomoya

    PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN   68 ( 2 )   I_49 - I_54   2012

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    In this research, we compare the results of video analysis of the 2011 Tohoku tsunami in Kesennnumaand the results of simulation. Based on the comparisons, we consider the validity and improvement of the simulation model. As the result of this research, simulated water velocity gives a good agreement with recorded real water velocity at land area. Inundation simulation also shows good estimation. It appears that embankment had a big influence on the rise of water elevation in land.

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  • THE GENERATION OF WAVES CAUSED BY LONG-PERIOD GROUND MOTION AT A REMOTE LOCATION FROM EPICENTER Reviewed

    OHIRA Koichiro, SHIBAYAMA Tomoya

    PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN   68 ( 2 )   I_55 - I_59   2012

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    This work aims to ascertain the wave behavior and possible damage in a lake or a bay caused by the effect of long-period ground motion using the same numerical analysis. The generation of waves which are affected by long-period ground motion is a new concept. In general, when an earthquake occurs in a marine area, tsunami disaster is of special concern as water can damage coastal regions. However, in fact, not only tsunami but also high waves caused by long-period ground motions were generated at Sai Lake in Yamanashi Prefecture about 470km far from the epicenter of the Tohoku earthquake (Mw9.0) and this phenomenon has not received sufficient attention up to now. According to the field survey, there is evidence that waves of up to 1.0m height were generated. These 1.0m height waves were accurately simulated by the numerical model, whose governing equations are the non-linear shallow water equations. Furthermore, this model was applied to Tokyo Bay against the possible future Tokai and Tonankai earthquakes which are forecasted to take place within the next 20 years. As a result, the wave height generated by the long-period ground motion is less than 1m. These waves, although they will not lead to inundation of coastal areas, are irregularly generated and can shake small boats or float bridges, and it is important for people in the area to pay attention to this following the earthquake.

    DOI: 10.2208/jscejoe.68.I_55

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  • PREDICTING THE RISK OF STORM SURGE AND TSUNAMI IN TOKYO PORT Reviewed

    TAKABATAKE Tomoyuki, SHIBAYAMA Tomoya

    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)   68 ( 2 )   I_894 - I_899   2012

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    The purpose of this paper is to clarify the risk of storm surge and tsunami in Tokyo port by using three different numerical simulations, a storm surge simulation, a tsunami simulation and an overland inundation simulation. In the storm surge simulation, storm surge behavior in Tokyo port was calculated by considering many typhoon courses. The model typhoon used in the calculation is the Ise bay typhoon(1959), reproduced by using Myers equation. As a result, the maximum storm surge height in Tokyo port and the typhoon course which occurs are clarified. In the tsunami simulation, tsunami behavior in Tokyo bay is calculated under the consideration of three earthquakes. The target earthquakes are Genroku, Miura Peninsula and Kamogawa and Keicho earthquake. Amongst them, the earthquake which induces the highest tsunami in Tokyo port is the Keicho earthquake. In that case, the tsunami height around Tokyo port is about 1.5m. In the simulation, the initial tsunami heights were calculated by using the model of Manshinha and Smylie(1971). Overland inundation is simulated under the impact of the Keicho earthquake. The results show the western Koto Delta, Southern Koto Delta, East Shinagawa and many other areas outside Tokyo port are under the risk of inundation. For the overland inundation simulation, a 5m mesh topography data was used, which enables the display of micro scale inundation. The overall results show that it is necessary to reconsider disaster management plans in Tokyo, as current counter-measures might not be sufficient to protect certain areas against all foreseeable threats.

    DOI: 10.2208/jscejoe.68.I_894

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  • Numerical analysis of tsunami propagation on wide reef platform

    Takahito Mikami, Tomoya Shibayama

    Proceedings of the Coastal Engineering Conference   2012

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    DOI: 10.9753/icce.v33.posters.25

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  • EXAMINATION OF THE SUSPENDED SEDIMENT CONCENTRATION FORMULAE USING FULL-SCALE RIPPLED BED AND SHEET-FLOW DATA Reviewed

    Mantripathi Prabath Ravindra Jayaratne, Sritharan Srikanthan, Tomoya Shibayama

    COASTAL ENGINEERING JOURNAL   53 ( 4 )   451 - 489   2011.12

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    DOI: 10.1142/S0578563411002422

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  • ASSESSMENT OF FUTURE STABILITY OF BREAKWATERS UNDER CLIMATE CHANGE Reviewed

    Hiroshi Takagi, Hidehiro Kashihara, Miguel Esteban, Tomoya Shibayama

    COASTAL ENGINEERING JOURNAL   53 ( 1 )   21 - 39   2011.3

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    DOI: 10.1142/S0578563411002264

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  • Erratum to: The economic impact of future increase in tropical cyclones in Japan (Nat Hazards, 10.1007/s11069-010-9522-9) Reviewed

    Christian Webersik, Miguel Esteban, Tomoya Shibayama

    Natural Hazards   56 ( 1 )   407 - 408   2011

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    DOI: 10.1007/s11069-010-9555-0

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  • 2010年チリ沖地震津波災害の現地調査 Reviewed

    木学会論文集B3(海洋開発)   67   2011

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    DOI: 10.2208/jscejoe.67.I_529

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  • 2011年東北地方太平洋沖地震による津波災害の宮城県以南における現地調査 Reviewed

    土木学会論文集B2(海岸工学)   67 ( 2 )   1301 - 1305   2011

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    DOI: 10.2208/kaigan.67.I_1301

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  • Field Survey of the 2011 off the Pacific Coast of Tohoku Earthquake Tsunami Disaster and Future Tsunami Protections

    Proceedings of the Sixth International Conference on Asian and Pacific Coasts (APAC 2011)   2011

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  • Field survey and analysis of tsunami disaster in the Samoan Islands 2009

    Proc. of 6th Int. Conf. Coastal Structures   2011

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  • Field survey and analysis of tsunami disaster in the Samoan Islands 2009

    Proc. of 6th Int. Conf. Coastal Structures, CD-Rom   2011

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  • ENERGY DISSIPATION MODEL FOR COMPUTING TRANSFORMATION OF SPECTRAL SIGNIFICANT WAVE HEIGHT Reviewed

    Winyu Rattanapitikon, Tomoya Shibayama

    COASTAL ENGINEERING JOURNAL   52 ( 4 )   305 - 330   2010.12

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    DOI: 10.1142/S0578563410002191

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  • The economic impact of future increase in tropical cyclones in Japan Reviewed

    Christian Webersik, Miguel Esteban, Tomoya Shibayama

    NATURAL HAZARDS   55 ( 2 )   233 - 250   2010.11

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    DOI: 10.1007/s11069-010-9522-9

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  • Methodology for the estimation of the increase in time loss due to future increase in tropical cyclone intensity in Japan Reviewed

    Miguel Esteban, Christian Webersik, Tomoya Shibayama

    CLIMATIC CHANGE   102 ( 3-4 )   555 - 578   2010.10

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    DOI: 10.1007/s10584-009-9725-9

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  • サモア諸島沖地震津波の調査と分析 Reviewed

    SHIBAYAMA Tomoya, MIKAMI Takahito, MATSUMARU Ryo, TAKAGI Hiroshi, Latu Faainuseiamalie

    土木学会論文集B2(海岸工学)   66 ( 1 )   1376 - 1380   2010

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    This paper aims to understand the characteristics of the tsunami disaster in the Samoan Islands by analyzing the field survey data as well as numerical simulation results. The field survey was performed about one month after the disaster to clarify the tsunami wave height and to understand the reality of the disaster according to the residents. As a result, the followings are concluded. 1) Tsunami height exceeded 5m in a wide area of Upole and Tutuila Islands. 2) In areas that have a wide coral reef, people saw the wave breaking on top of it and quickly became aware of the approaching tsunami. 3) Tsunami education contributed the residents' reaction on the evacuation. 4) Social characteristics especially existence of Matai (the chief of the village) influenced the residents' decision making after the tsunami disaster.

    DOI: 10.2208/kaigan.66.1376

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  • サイクロンNARGISによる高潮調査と氾濫挙動の分析 Reviewed

    海洋開発論文集   26   429 - 434   2010

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  • Effect of a global warming-induced increase in typhoon intensity on urban productivity in Taiwan Reviewed

    Miguel Esteban, Christian Webersik, Tomoya Shibayama

    SUSTAINABILITY SCIENCE   4 ( 2 )   151 - 163   2009.10

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    DOI: 10.1007/s11625-009-0089-x

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  • A two-dimensional horizontal wave propagation and mud mass transport model Reviewed

    Ali Oveisy, Kevin Hall, Mohsen Soltanpour, Tomoya Shibayama

    CONTINENTAL SHELF RESEARCH   29 ( 3 )   652 - 665   2009.3

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    DOI: 10.1016/j.csr.2008.09.009

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  • METHODOLOGY FOR THE SIMULATION OF THE CONSTRUCTION OF A BREAKWATER TAKING INTO ACCOUNT CLIMATE AND CONSTRUCTION ACCIDENT RISK Reviewed

    Miguel Esteban, Hiroshi Takagi, Tomoya Shibayama

    COASTAL ENGINEERING JOURNAL   51 ( 1 )   49 - 68   2009.3

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    DOI: 10.1142/S0578563409001941

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  • サイクロンNargisによる高潮被害の調査 Reviewed

    SHIBAYAMA Tomoya, TAKAGI Hiroshi, Ngun Hnu, AOKI Yohei

    海岸工学論文集,土木学会論文集B2(海岸工学)   65 ( 1 )   1376 - 1380   2009

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    Field surveys were performed in the Yangon River Basin to learn lessons out of severe disasters due to Cyclone Nargis. It was found that the tide due to the storm surge was up to 3-4m around 50 kilometers upstream of the river mouth of Yangon River. According to interviews with the local residents, it also appears that significant flooding took place at inland areas as a result of the upsurge through the tributaries or channels from the main river. Apart from the nvestigation, the tracks for the present and past cyclones (1945-2007) have been analyzed based on a string of best track data. The results reveal that quite a small number of cyclone (roughly 2 times on average every 10years) have hit the southern coast of Myanmar compared to the number of cyclones that hit the coast of Bangladesh, and that the route that Nargis traced is rather unique.

    DOI: 10.2208/kaigan.65.1376

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  • Quantitative Evaluation of Vulnerabilities in Coastal Structures due to Climate Change -Case Studies for Breakwaters- Reviewed

    TAKAGI Hiroshi, KASHIHARA Hidehiro, SHIBAYAMA Tomoya

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)   65 ( 1 )   891 - 895   2009

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    Climate change is expected to lead to increases in both sea level and typhoon intensity. Such changes may threaten the stability of breakwaters. In this study, calculations using the SWAN model showed that a 10% increase in wind speed can lead to a 20% increase in wave height. The expected sliding distances for the breakwaters at Shibushi Ports were estimated using a probabilistic method proposed by Takagi et al. (2008). It is noteworthy that in the future sliding distances may become three times greater than current ones due to a combination of increases in sea level and wave height.

    DOI: 10.2208/kaigan.65.891

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  • FAILURE MODE AGAINST IMPACT AND SOLITARY WAVES OF ARMOURED CAISSON BREAKWATERS PROTECTED BY A PARTIALLY FAILED ARMOUR LAYER

    Miguel Esteban, Hiroshi Takagi, Tomoya Shibayama

    PROCEEDINGS OF COASTAL DYNAMICS 2009   2009

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  • Field survey of storm surge disaster due to cyclone Sidr in Bangladesh

    Tomoya Shibayama, Yoshimitsu Tajima, Taro Kakinuma, Hisamichi Nobuoka, Tomohiro Yasuda, Raquib Ahsan, Mizanur Rahman, Shariful Islam

    Proc. Coastal Dynamics 2009   2009

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  • Coastal Processes—Concepts of Coastal Engineering and Their Applications to Multifarious Environments

    World Scientific   215   2009

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  • 港湾構造物に及ぼす気候変動の影響とその定量的予測 Reviewed

    海岸工学論文集 B2(海岸工学)   65 ( 1 )   891 - 895   2009

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  • スリランカにおける津波警報発令時の情報伝達・避難行動の実態―2007年9月の事例― Reviewed

    松丸亮, 内倉嘉彦, 落合知帆, WIJAYARATNA Nimal, 柴山知也

    海岸工学論文集   55 ( 2 )   1421 - 1425   2008.10

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  • Total quality management implementation in the Egyptian construction industry Reviewed

    Tarek Elghamrawy, Tomoya Shibayama

    JOURNAL OF MANAGEMENT IN ENGINEERING   24 ( 3 )   156 - 161   2008.7

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    DOI: 10.1061/(ASCE)0742-597X(2008)24:3(156)

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  • NUMERICAL MODELING OF WAVE TRANSFORMATION ON MUDDY COASTS Reviewed

    Mohsen Soltanpour, Ali Oveisy, Tomoya Shibayama

    COASTAL ENGINEERING JOURNAL   50 ( 2 )   143 - 160   2008.6

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    DOI: 10.1142/S0578563408001806

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  • サイクロンSidrによるバングラデシュ海岸・河川高潮災害の現地調査

    海岸工学論文集   55   1396 - 1400   2008

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  • COMPUTATIONAL ESTIMATION OF CAISSON SLIDING AND TILTING OF SUSAMI WEST BREAKWATER DUE TO TYPHOON TOKAGE

    ESTEBAN Miguel, SHIBAYAMA Tomoya

    Doboku Gakkai Ronbunshuu B   24   531 - 536   2008

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    DOI: 10.2208/prooe.24.531

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  • Landslide susceptibility analysis using quantitative method with GIS for mountaneous road

    CHEKI Dorji, SHIBAYAMA Tomoya

    Proc. of Global Environmental Eng., 16   16   15 - 25   2008

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    This paper describes the quantitative analysis of landslide on mountainous region of Kanagawa Prefecture, Japan using the records of pervious landslide data along the road network. It determines the landslide susceptibility of an area using the Certainty Factor Model (CF) and uses SINMAP model to indicate Stability Index (SI) and susceptibility classes in GIS application. The affecting parameters such, as lithology, slope angle, slope aspect, elevation, land use and rainfall are derived and spatial database was established. The CF value that was used as GIS attributes to integrate the parameters by summation indicated it is certain that landslide will occur along sandstone and shale area with CF value of 0.38.The slope of 20°-30° had high certainty and slope facing northwest and west showed high certainty for landslide as area unexposed to sun have lower temperature and higher soil moisture which are favorable for landslide occurrence. The land use indicated higher certainity of landslides in barren land with grasses and the rain parameter indicated that certainity increases with an increase of rainfall intensity. The integration of the geomorphological parameters in SINMAP model along with the landslide data indicated the relation between contribution area and the slope. The failure slope range indicated by SINMAP model agreed with that of the CF model. The generated susceptibility class map showed similar trend while comparing with the actual landslide data of the area and also indicated the susceptibile area similar to that with CF model.

    DOI: 10.2208/proge.16.15

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  • Landslide susceptibility analysis using quantitative method with GIS for mountaneous road

    CHEKI Dorji, SHIBAYAMA Tomoya

    地球環境研究論文集   16   15 - 25   2008

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    This paper describes the quantitative analysis of landslide on mountainous region of Kanagawa Prefecture, Japan using the records of pervious landslide data along the road network. It determines the landslide susceptibility of an area using the Certainty Factor Model (CF) and uses SINMAP model to indicate Stability Index (SI) and susceptibility classes in GIS application. The affecting parameters such, as lithology, slope angle, slope aspect, elevation, land use and rainfall are derived and spatial database was established. The CF value that was used as GIS attributes to integrate the parameters by summation indicated it is certain that landslide will occur along sandstone and shale area with CF value of 0.38.The slope of 20°-30° had high certainty and slope facing northwest and west showed high certainty for landslide as area unexposed to sun have lower temperature and higher soil moisture which are favorable for landslide occurrence. The land use indicated higher certainity of landslides in barren land with grasses and the rain parameter indicated that certainity increases with an increase of rainfall intensity. The integration of the geomorphological parameters in SINMAP model along with the landslide data indicated the relation between contribution area and the slope. The failure slope range indicated by SINMAP model agreed with that of the CF model. The generated susceptibility class map showed similar trend while comparing with the actual landslide data of the area and also indicated the susceptibile area similar to that with CF model.

    DOI: 10.2208/proge.16.15

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  • 東京湾における陸棚波に起因した異常潮位の分析とその将来影響

    TAKAGI Hiroshi, KIDU Shohei, SHIBAYAMA Tomoya

    海岸工学論文集   55   1306 - 1310   2008

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    Abnormal tides wherein the water level remains high for a few days despite the absence of remarkable meteorological disturbances may occur due to incoming continental-shelf waves. In this study, it is assumed that the continental-shelf wave can be initiated off the Choshi coast; this wave will subsequently reach Tokyo Bay. First, the characteristics of tide anomalies are discussed on the basis of tide, wind, atmospheric pressure, and wave data obtained near Choshi. Second, several obvious cases of water-level propagation from Choshi to Tokyo Bay are collected by scrutinizing the tidal data at both stations. Finally, it is discussed how the adverse effects of abnormal tides induced by the continental-shelf waves may appear to be more serious if the sea level rise is dramatic.

    DOI: 10.2208/proce1989.55.1306

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  • Improvement in calculation of resistance force on caisson sliding due to tilting Reviewed

    Miguel Esteban, Hiroshi Takagi, Tomoya Shibayama

    COASTAL ENGINEERING JOURNAL   49 ( 4 )   417 - 441   2007.12

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    DOI: 10.1142/S0578563407001678

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  • Suspended sediment concentration on beaches under three different mechanisms Reviewed

    Mantripathi Prabath Ravindra Jayaratne, Tomoya Shibayama

    COASTAL ENGINEERING JOURNAL   49 ( 4 )   357 - 392   2007.12

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    DOI: 10.1142/S0578563407001666

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  • Estimation of shallow water representative wave heights Reviewed

    Winyu Rattanapitikon, Tomoya Shibayama

    COASTAL ENGINEERING JOURNAL   49 ( 3 )   291 - 310   2007.9

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    DOI: 10.1142/S0578563407001630

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  • Irregular wave attenuation and mud mass transport Reviewed

    Mohsen Soltanpour, Tomoya Shibayama, Yugo Masuya

    COASTAL ENGINEERING JOURNAL   49 ( 2 )   127 - 147   2007.6

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    DOI: 10.1142/S0578563407001551

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  • A numerical study of intermittent sediment concentration under breaking waves in the surf zone Reviewed

    Takayuki Suzuki, Akio Okayasu, Tomoya Shibayama

    COASTAL ENGINEERING   54 ( 5 )   433 - 444   2007.5

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    DOI: 10.1016/j.coastaleng.2006.11.002

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  • Evaluation of the active depth of foundations under a caisson breakwater subjected to impact waves

    Coastal structures 2007,CD-Rom   123 - 126   2007

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  • Expansion of the reliability design method for caisson-type breakwaters towards deep water using the fourth order approximation of standing waves

    Hiroshi Takagi, Tomoya Shibayama, Miguel Esteban

    ASIAN AND PACIFIC COASTS 2007   661 - +   2007

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  • On the Causes of the Formation of Soft Mud at the Head of Tokyo Bay

    SASAKI Jun, SATO Yuta, SHIBAYAMA Tomoya, RASMEEMASMUANG Thamnoon

    Doboku Gakkai Ronbunshuu B   54   1046 - 1050   2007

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    Accumulation of soft mud (muck) at the head of Tokyo Bay is one of the major causes of deterioration of water quality and ecosystems. We conducted field observation of sediment quality and numerical simulation of grain size distribution to reveal the mechanism of its accumulation, which will provide a suggestion for the future restoration of its estuarine environment. We revealed the detailed variation in sediment quality and one of the causes is attributed to the lower decomposition rate of organic matter due to the long-term exposure to hypoxic waters along with the higher rate of accumulation of very fine particles reflecting hydrodynamic properties.

    DOI: 10.2208/proce1989.54.1046

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  • CHANGE OF SEDIMENT DISCHARGE TO COASTAL ENVIRONMRNT FROM RIVER BASIN:A CASE STUDY OF DAM DEVELOPMENT IN MEKONG RIVER BASIN

    Komano Yuichi, Shibayama Tomoya

    Doboku Gakkai Ronbunshuu G   15   143 - 148   2007

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    Many dam projects and dam constructions are increasingly brought forward in Mekong basin. Deposition of sand in dams will causes change of a cycle balance of sediment discharge. It is necessary to integrate numerical information in relation to dam project and sediment discharge. Sediment discharge was calculated by applying MUSLE model. Data of elevation, climate, soil and landuse of the year 1998 were used for calculation. Most of sediment discharge in the area distributed from the upper basin to the middle basin. In the area that has large amount of sediment discharge, the discharge rate will be decreased by Dam development.

    DOI: 10.2208/proge.15.143

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  • Tsunami disaster survey after Central Java tsunami in 2006

    Tomoya Shibayama, Jun Sasaki, Hiroshi Takagi, Hendra Achiari, Andojo Wurjanto

    ASIAN AND PACIFIC COASTS 2007   323 - +   2007

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  • Proposal of Simple pavement deterioration model by using in-service survey data

    Proceedings of Japan-China 4th Workshop on Pavement Technologies, Sapporo Japan   297 - 306   2007

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  • Numerical simulation of wave impact pressure on vertical breakwater

    Nguyen Danh Thao, Tomoya Shibayam

    ASIAN AND PACIFIC COASTS 2007   125 - 128   2007

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  • Management of pavement network maintenance and rehabilitation planning using shuffled complex evolution Reviewed

    SAMSON Matiko, SHIBAYAMA Tomoya

    Journal of Construction Management and Engineering   14   143 - 153   2007

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    This paper presents an approach for optimization of segment-linked maintenance and rehabilitation plan for a pavement network by using shuffled complex evolution. It extends the works of Nunuo and Agyei (2000) by improving the exploration-exploitation balance of the algorithm and by using a realistic pavement deterioration model to solve the problem of multiple maintenance and rehabilitation activities. An example to maximize the serviceability of the road network under a fixed budget and minimum serviceability level policy is also presented. The result of the optimization process using a part of Kanagawa prefecture road network showed very good results with reasonable computational times.

    DOI: 10.2208/procm.14.143

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  • Integrated Model for Estimating Sediment Discharge to Coastal Area from River Basin -A Case Study of Sakawa River Reviewed

    Journal of Global Environment Engineering   12   13 - 32   2007

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  • Application of the methodology for risk assessment of a caisson breakwater during construction to evaluate the insurance premium

    Miguel Esteban, Hiroshi Takagi, Tomoya Shibayama

    ASIAN AND PACIFIC COASTS 2007   645 - 648   2007

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  • Determination of Risk Scores for Road Network in Bhutan

    Journal of Research and Development, Royal University of Bhutan   2007

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  • Breaking wave formulas for breaking depth and orbital to phase velocity ratio Reviewed

    Winyu Rattanapitikon, Tomoya Shibayama

    COASTAL ENGINEERING JOURNAL   48 ( 4 )   395 - 416   2006.12

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    DOI: 10.1142/S0578563406001489

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  • スマトラ島沖地震とインド洋津波/2004 インドネシア・バンダアチェにおける津波痕跡高と海岸侵食調査

    柴山知也, 岡安章夫, 佐々木淳, 鈴木崇之, 松丸亮, MASIMIN, ARIFF Zouhrawaty A

    月刊地球   146 - 153   2006.10

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  • Hurricane Katrinaによる高潮被害の調査

    海岸工学論文集   53   401 - 405   2006

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    DOI: 10.2208/proce1989.53.401

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  • 大水深地点におけるケーソン式防波堤の信頼性設計手法の提案

    高木 泰士, 柴山 知也

    海岸工学論文集   53   901 - 905   2006

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    今後の大水深地点における海域利用の促進や既設防波堤の維持補修の観点からは, 既往の性能評価手法の高度化が重要となってくる. 特に防波堤の設計において主たる外力となる波力を精度良く推定して設計に反映することは, 設計の合理化に大きく寄与するものと考えられる. 本研究では, 砕波時と非砕波時において波力とその時間変化が大きく異なることに着目して, レベル3信頼性設計法の更なる高度化を試みた. その結果, 大水深地点において波浪の砕波と非砕波を区別して設計することの重要性が明らかになった. 本提案の方法を用いることにより, 設置水深を問わずケーソン式防波堤の更なる設計合理化を図ることができる.

    DOI: 10.2208/proce1989.53.901

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  • 途上国における環境変化の土砂環境への影響-メコン川を例として-

    第14回地球環境シンポジウム講演論文集   115 - 120   2006

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    DOI: 10.2208/proge.14.115

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  • ベトナムDa Rang川における長期河口変動の解析

    日本沿岸域学会研究討論会2006講演概要集   284 - 289   2006

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  • 3次元LESモデルによる傾斜式防波堤周辺の乱流特性の数値的検討

    海岸工学論文集   53   751 - 755   2006

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    DOI: 10.2208/proce1989.53.751

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  • Integrated Model for Estimating Sediment Discharge to Coastal Environment from River Basin-A Case Study of Sakawa Riber

    109 - 114   2006

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  • Topography Changes of Da Rang Coastal River Mouth,Shorelines and River Profile

    Techno-Ocean 2006   2006

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  • Laboratory Study on the Progression of Damage on Caisson Breakwaters Under Impact Waves

    Techno-Ocean 2006   2006

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  • GIS-Based Estimation of Soil Erosion and Sediment Delivery to Coastal Environment from the River Basin. A Case Study of Rufiji River in Tanzania

    Asian and Pacific Coasts 2005   1695 - 1704   2005

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  • DISASTER SURVEY OF INDIAN OCEAN TSUNAMI AND FUTURE COOPERATION OF ENVIRONMENTAL STUDY

    SHIBAYAMA Tomoya, OKAYASU Akio, SASAKI Jun, SUZUKI Takayuki

    Doboku Gakkai Ronbunshuu G   13   289 - 291   2005

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    Surveys were performed on disasters caused by Indian Ocean tsunami which occurred in December 26, 2004. Surveys were done in Sri Lanka and in Indonesia. Cooperative works with professors of domestic universities, who graduated from Japanese universities were the core of the survey works. From the survey results, varieties of disaster mechanisms were found. Local natural conditions and social conditions give big influences on the mechanism. In order to promote an appropriate post tsunami rehabilitation and environmental restoration process, cooperative works with local professors and engineers are essential.

    DOI: 10.2208/proge.13.289

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  • 流域から海岸への土砂供給量の検討-酒匂川を例として-

    海岸工学論文集   52   621 - 625   2005

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    DOI: 10.2208/proce1989.52.621

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  • 波による底泥移動量の評価方法-不規則波浪下と平面波浪場への適用

    海岸工学論文集   52   446 - 450   2005

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    DOI: 10.2208/proce1989.52.446

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  • アマモ群落における底質輸送機構と底質安定性向上効果について

    海岸工学論文集   52   1001 - 1005   2005

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    DOI: 10.2208/proce1989.52.1001

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  • 2004年スマトラ沖地震津波のスリランカ南部被害調査

    海岸工学論文集   52   1401 - 1405   2005

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    DOI: 10.2208/proce1989.52.1401

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  • 2004年スマトラ沖地震津波のインドネシア・バンダアチェ被害調査

    海岸工学論文集   52   1371 - 1375   2005

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    DOI: 10.2208/proce1989.52.1371

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  • 「健全な議論による終結」を目指す住民参加型協議会運営方法の分析

    建設マネジメント研究論文集   11   15 - 26   2004

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    DOI: 10.2208/procm.11.15

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  • 砕波による時空間的浮遊砂濃度変動の数値シミュレーション

    鈴木 崇之, 岡安 章夫, 柴山 知也

    海岸工学論文集   51   381 - 385   2004

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    3次元Large Eddy Simulationを用いて, 流体運動の3次元性および砕波によるエネルギー減衰を考慮した砕波帯内の流場を計算した.この流速場を用いて, 砕波下の流体運動によって生じる底質の巻き上げと移流を評価できる底質浮遊モデ速ルを構築し, 砕波帯内での時々刻々の3次元浮遊砂濃度分布の算定を行った.その結果, 砕波によって発生する間欠性, 局所性をもった底質の巻き上げと浮遊を計算することができた.また, 浮遊砂濃度場計算結果の検証として, 時間平均した浮遊砂濃度を水理実験結果と比較したところ, 同一オーダーとなっており, 計算の妥当性についても確認することができた.

    DOI: 10.2208/proce1989.51.381

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  • A COMPARATIVE STUDY OF ENVIRONMENTAL CHANGES IN DEVELOPING COUNTRIES:Report of sub-committee on developing countries

    SHIBAYAMA Tomoya

    Doboku Gakkai Ronbunshuu G   12   7 - 9   2004

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    A comparative study is performed for environmental problems in developing countries. Examples of environmental problems are collected, classified and discussed in relation to the stages of economic development in these countries. Time history of occurrences of these engineering problems is compared with socioeconomic development stage of each country. It is found out that environmental problems are closely related with industrialization and development stages. The developing countries in Asian region including ASEAN nations are accomplishing economic development well for the long terms before the recession period starting in 1997. Industry, agriculture, and the resort development were rapidly advanced. As a result, Asian region faces a rapid change of environmental system as having not experienced by the human race before. Also in African countries, for examples in Tanzania, we can observe the same type of environmental problems.

    DOI: 10.2208/proge.12.7

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  • 砕波帯内浮遊砂量の評価法-現地規模の現象に着目して-

    海岸工学論文集   51   386 - 390   2004

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    DOI: 10.2208/proce1989.51.386

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  • Cross-shore mud transport and beach deformation model

    M Soltanpour, T Shibayama, T Noma

    COASTAL ENGINEERING JOURNAL   45 ( 3 )   363 - 386   2003.9

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    DOI: 10.1142/S0578563403000804

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  • Irregular wave height transformation using representative wave approach

    W Rattanapitikon, R Karunchintadit, T Shibayama

    COASTAL ENGINEERING JOURNAL   45 ( 3 )   489 - 510   2003.9

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    DOI: 10.1142/S0578563403000865

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  • Application of GIS to evaluate long-term variation of sediment discharge to coastal environment

    LT Tuan, T Shibayama

    COASTAL ENGINEERING JOURNAL   45 ( 2 )   275 - 293   2003.6

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    DOI: 10.1142/S0578563403000774

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  • A proposal of new breaker height formula

    W Rattanapitikon, T Vivattanasirisak, T Shibayama

    COASTAL ENGINEERING JOURNAL   45 ( 1 )   29 - 48   2003.3

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    DOI: 10.1142/S0578563403000634

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  • 砕波帯内浮遊砂量の評価方法

    海岸工学論文集   50   451 - 455   2003

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    DOI: 10.2208/proce1989.50.451

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  • 不規則波による底泥移動と波高減衰に関する実験的研究

    海岸工学論文集   50   466 - 470   2003

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    DOI: 10.2208/proce1989.50.466

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  • 公共海岸事業の選択における専門家と一般市民

    海岸工学論文集   50   1351 - 1355   2003

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    DOI: 10.2208/proce1989.50.1351

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  • 海岸原風景の回復を目指したエネルギー逸散型岸沖構造物の検討

    海岸工学論文集   49   1386 - 1390   2002

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    DOI: 10.2208/proce1989.49.1386

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  • 数値地図情報を用いた流域から海岸に供給される土砂収支の地球規模での算定方法

    海岸工学論文集   49   606 - 610   2002

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    DOI: 10.2208/proce1989.49.606

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  • 砕波帯内乱流モデルの波打ち帯(Swash Zone)への拡張

    海岸工学論文集   49   451 - 455   2002

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    DOI: 10.2208/proce1989.49.451

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  • Ethics Education in Civil Engineering

    SHIBAYAMA Tomoya

    Journal of Jsee   49 ( 2 )   21 - 28   2001.3

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    In the process of modernization of Japanese society, ethics education in engineering field has been started. In order to apply the code of ethics of engineering society to daily practice of engineers, case teaching method is essential based on discussions in the classroom.

    DOI: 10.4307/jsee.49.2_21

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  • 集合表象による景観解析を用いた波浪制御の提案

    海岸工学論文集   48   1331 - 1335   2001

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    DOI: 10.2208/proce1989.48.1331

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  • 砕波帯内戻り流れ(undertow)の推定方法

    海岸工学論文集   48   111 - 115   2001

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    DOI: 10.2208/proce1989.48.111

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  • A comparative study of coastal processes in Asian countries

    T Shibayama, LT Tuan

    PROCEEDINGS OF THE FIRST ASIAN AND PACIFIC COASTAL ENGINEERING CONFERENCE, VOLS 1 AND 2 (APACE 2001)   2   909 - 917   2001

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  • Verification and modification of breaker height formulas Reviewed

    Rattanapitikon, V, T Shibayama

    COASTAL ENGINEERING JOURNAL   42 ( 4 )   389 - 406   2000.12

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    DOI: 10.1016/S0578-5634(00)00019-5

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  • Simple model for undertow profile

    W Rattanapitikon, T Shibayama

    COASTAL ENGINEERING JOURNAL   42 ( 1 )   1 - 30   2000.3

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    DOI: 10.1016/S0578-5634(00)00002-X

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  • Calculation of wave-induced longshore current in surf zone by using Boussinesq equations

    Shaowu Li, Tomoya Shibayama

    Coastal Engineering 2000 - Proceedings of the 27th International Conference on Coastal Engineering, ICCE 2000   276   X334 - 345   2000

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    DOI: 10.1061/40549(276)26

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  • Simple model for undertow profile Reviewed

    Winyu Rattanapitikon, Tomoya Shibayama

    Coastal Engineering Journal   42 ( 1 )   1 - 30   2000

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    DOI: 10.1142/S057856340000002X

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  • A Unified Numerical Model for the Bottom Boundary Layer and the Upper Layer in the Surf Zone

    Proc. of Coastal Eng. Conf.,ASCE   27 ( 1 )   120 - 133   2000

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  • A Model of Sediment Transport in the Bottom Boundary Layer

    Proc. of Coastal Eng. Conf.,ASCE   27   134 - 147   2000

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  • A Model for Bottom Boundary Layer in the Surf Zone

    47   501 - 505   2000

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  • 信頼関係と技術者の行動選択

    Shibayama Tomoya, Hayashi Keiko

    建設マネジメント研究論文集   8   247 - 253   2000

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    The relationship between the index of general trust and decision making process of civil engineers is examined by using analysis of answers to question sheet. From the analysis, it appears that there is a close relationships between them. As the score of general trust increases, the decision of engineers becomes more positive. It is also found out that socialization process of civil engineers is completed at around 30 years old. It is necessary to do ethics education before this age.

    DOI: 10.2208/procm.8.247

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  • 砕波帯内底面乱流境界層のモデル

    海岸工学論文集   47   501 - 505   2000

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    DOI: 10.2208/proce1989.47.501

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  • ベトナムの経済発展に位置づけた海岸問題発現の比較研究

    海岸工学論文集   47   1341 - 1345   2000

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  • Energy Dissipation Formulas for Regular Breaking Waves

    Proc. of the 4th International Conf. on Hydrodynamics   545 - 550   2000

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  • Comparative Study of Coastal Problems in Vietnam

    47   1341 - 1345   2000

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  • Integrated Model Including Bed Load and Suspended Load for Sediment Transport in the Surf Zone

    46 ( 1 )   601 - 605   1999

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  • A 2-DV numerical solution for the turbulent wave boundary layer under breaking waves

    NT Duy, T Shibayama, A Okayasu

    COASTAL ENGINEERING 1998, VOLS 1-3   484 - 497   1999

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  • 掃流砂と浮遊砂を統一的に取り扱う砕波帯内漂砂量モデルとその検証

    海岸工学論文集   46 ( 1 )   601 - 605   1999

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    DOI: 10.2208/proce1989.46.601

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  • 傾斜泥層の波による輸送量モデルとその実験による検証

    海岸工学論文集   46 ( 1 )   581 - 585   1999

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    DOI: 10.2208/proce1989.46.581

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  • Mud Transport Model over Sloping Bottom

    46 ( 1 )   581 - 585   1999

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  • Energy Dissipation Model for Irregular Braking Waves

    Proc. of 26th Coastal Eng. Conf. , ASCE   112 - 125   1998

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  • Random Wave Modelling Approach Included in a Beach Deformation Model

    Proc. of 26th Coastal Eng. Conf. , ASCE   3008 - 3021   1998

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  • Modelling of time-dependent sand transport at the bottom boundary layer in the surf zone

    Tomoya Shibayama, Ioan Nistor

    Coastal Engineering Journal   40 ( 3 )   241 - 263   1998

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    DOI: 10.1142/S0578563498000157

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  • 粘弾塑性体多層モデルを用いた二次元泥浜の変形予測

    海岸工学論文集   45   521 - 525   1998

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    DOI: 10.2208/proce1989.45.521

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  • Two-Dimensional Mud Beach Deformation Model

    45   521 - 525   1998

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    DOI: 10.2208/proce1989.45.521

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  • Modelling of time-dependent sand transport at the bottom boundary layer in the surf zone Reviewed

    Tomoya Shibayama, Ioan Nistor

    Coastal Engineering Journal   40 ( 3 )   241 - 263   1998

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    DOI: 10.1142/S0578563498000157

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  • Energy dissipation model for regular and irregular breaking waves

    Winyu Rattanapitikon, Tomoya Shibayama

    Coastal Engineering Journal   40 ( 4 )   327 - 346   1998

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    DOI: 10.1142/S0578563498000194

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  • Energy dissipation model for regular and irregular breaking waves Reviewed

    Winyu Rattanapitikon, Tomoya Shibayama

    Coastal Engineering Journal   40 ( 4 )   327 - 346   1998

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    DOI: 10.1142/S0578563498000194

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  • A convection-diffusion model for suspended sediment in the surf zone

    NT Duy, T Shibayama

    JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS   102 ( C10 )   23169 - 23186   1997.10

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1029/97JC00790

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  • Beach Deformation Model under Irregular Waves

    Offshore Mechanics and Arctic Engineering. OMAE Conf.   1   124 - 138   1997

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  • 工学高等教育分野における途上国援助の方策

    国際開発研究   5   81 - 88   1996

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  • Cross-Shore Sediment Transport and Beach Deformation Model

    RATTANAPITIKON W.

    Proc. of 25th Coastal Eng. Conf. , ASCE   3062 - 3075   1996

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  • A Turbulent Flow Model for Braking Waves

    Proc. of 25th Coastal Eng. , ASCE   200 - 213   1996

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  • A Proposal for Higher Education Support in Engineering Field

    5   81 - 88   1996

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  • Development Stages of Engineering School and Construction Industry in Asia

    Proc. of CIB Conf. on Construction Modernization and Education, CD-ROM   1996

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  • 途上国の発展段階に位置づけた海岸問題発現の比較研究 (共著)

    海岸工学論文集   43 ( 2 )   1291 - 1295   1996

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    DOI: 10.2208/proce1989.43.1291

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  • 砕波帯内底面乱流境界層の数値モデルとその検証

    海岸工学論文集   43 ( 1 )   446 - 450   1996

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    DOI: 10.2208/proce1989.43.446

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  • Suspended sediment concentration profiles under non-breaking and breaking waves

    Rattanapitikon Winyu, Tomoya Shibayama

    Proceedings of the Coastal Engineering Conference   3   2813 - 2827   1995.1

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  • Three Examples of Japanese Experiences of Coastal Environment Changes due to Construction Works

    Proc.of (]G0004[) COPEDEC.   1995

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  • 乱流方程式を用いたさ砕波帯流速場・圧力場の計算法の検証 (共著)

    海岸工学論文集   42 ( 1 )   21 - 25   1995

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    DOI: 10.2208/proce1989.42.21

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  • 乱流下の移流拡散方程式を用いた砕波帯内浮遊砂濃度の予測数値モデル (共著)

    海岸工学論文集   42 ( 1 )   441 - 445   1995

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    DOI: 10.2208/proce1989.42.441

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  • 浮遊漂砂量予測を取り入れた二次元海浜変形モデル (共著)

    海岸工学論文集   42 ( 1 )   446 - 450   1995

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  • A 2-D Vertical Model for Wave and Current in the Surf Zone Based on the Turbulent Flow Equations (共著)

    Coastal Engineering in Japan, JSCE   37 ( 1 )   41 - 66   1994

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  • 砕波帯内の浮遊漂砂量の算定モデル (共著)

    海岸工学論文集   41 ( 1 )   431 - 435   1994

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    DOI: 10.2208/proce1989.41.431

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  • 国際開発工学に向かって

    土木学会誌   79 ( 3 )   35 - 37   1994

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    CiNii Books

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  • 技術開発力の発展とその背景 (共著)

    国際開発研究   3 ( 1 )   177 - 184   1994

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  • 河口周辺の海浜変形モデルとその検証 (共著)

    海岸工学論文集   41 ( 1 )   466 - 470   1994

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    DOI: 10.2208/proce1989.41.466

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  • Coastal Disasters in Asia and Education of Leading Engineers in Japanese Universities

    Towards Natural Disaster Redution, Proc.of (]G0007[) PSA Workshop   149 - 153   1994

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  • 土木工学におけるパラダイム転換論と新しい土木事業執行制度の枠組みについて-力学中心からポストモダン、協同的人間活動への転換をめざして- (共著)

    土木学会誌   79 ( 10 )   42 - 45   1994

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  • 乱流方程式を用いた砕波帯内波浪場の数値モデル (共著)

    海岸工学論文集   41 ( 1 )   151 - 155   1994

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    DOI: 10.2208/proce1989.41.151

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  • 砕波による運動量輸送を考慮した海浜流の準3次元数値モデル (共著)

    海岸工学論文集   40 ( 1 )   251 - 255   1993

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    DOI: 10.2208/proce1989.40.251

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  • Vertical Distribution of Suspended Sediment Concentration in and Outside Surfzone (共著)

    RATTANAPITIKON W.

    Coastal Engineering in Japan, JSCE   36 ( 1 )   49 - 65   1993

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  • Opening of Engineering Graduate Education of Japanese Universities to Developing Countries

    Proc.of (]G0010[)(]G0010[)(]G0005[) IAHR Congress   (]G0007[)   222 - 225   1993

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  • A Visco-Elastic-Plastic Model for Wave-Mud Interaction (共著)

    SHIBAYAMA T.

    Coastal Engineering in Japan, JSCE   36 ( 1 )   67 - 90   1993

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  • 波流れ共存下での底泥質量輸送 (共著)

    海岸工学論文集   40 ( 1 )   361 - 365   1993

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    DOI: 10.2208/proce1989.40.361

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  • 持続可能なアジアの沿岸開発

    国際開発研究   2 ( 2 )   105 - 112   1993

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  • 砕波帯を含む浮遊砂濃度の鉛直分布の評価 (共著)

    海岸工学論文集   40 ( 1 )   306 - 310   1993

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    DOI: 10.2208/proce1989.40.306

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  • Multi-Level Model for Hydrodynamic Circulation and Dispersion Process in Bays (共著)

    SHIBAYAMA T.

    Coastal Engineering in Japan, JSCE   35 ( 1 )   49 - 66   1992

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  • 東京湾の流動と物質拡散 (共著)

    海岸工学論文集   39 ( 2 )   916 - 920   1992

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    DOI: 10.2208/proce1989.39.916

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  • 底泥特性の周期依存性に着目したモデルとその検証 (共著)

    海岸工学論文集   39 ( 1 )   511 - 515   1992

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    DOI: 10.2208/proce1989.39.511

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  • 大学院教育の国際化 (共著)

    NISHINO Fumio, SHIBAYAMA Tomoya

    工業教育   40 ( 4 )   97 - 101   1992

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    Language:Japanese   Publisher:Japanese Society for Engineering Education  

    The immediate target of Japanese universities in the field of engineering education at graduate level is to open doors for foreign students. It is necessary to implement the following three things at the same time. They are ; (1) to keep the highest standard in teaching and reserach, (2) to use English as a common language in addition to Japanese, and (3) to increase the total number of scholarships.

    DOI: 10.4307/jsee1953.40.4_97

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  • 斜面上に設置した大口径円柱周辺の地形変化機構 (共著)

    海岸工学論文集   39 ( 1 )   486 - 490   1992

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    DOI: 10.2208/proce1989.39.486

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  • 斜め入射波による砕波帯内定常流の3次元分布 (共著)

    海岸工学論文集   39 ( 1 )   66 - 70   1992

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    DOI: 10.2208/proce1989.39.66

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  • 砕波帯内長周期波の漂砂量への効果 (共著)

    海岸工学論文集   39   316 - 320   1992

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    DOI: 10.2208/proce1989.39.316

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  • アジアの開発途上国における高等教育の課題とわが国の取り組み

    国際協力研究   8 ( 2 )   31 - 39   1992

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  • タイ国の海岸問題-東南アジアにおける一例- (共著)

    海岸工学論文集   38   371 - 375   1991

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    DOI: 10.2208/proce1989.38.371

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  • 底泥の粘弾性特性の計測と数値モデルへの応用 (共著)

    海岸工学論文集   38 ( 1 )   471 - 475   1991

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    DOI: 10.2208/proce1989.38.471

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  • Breaking Conditions of Composite and Random Waves (共著)

    Coastal Engineering in Japan   33 ( 2 )   133 - 143   1990

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  • 底泥移動に関する粘弾塑性体モデルの波流れ場への適用 (共著)

    海岸工学論文集   37   240 - 243   1990

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    DOI: 10.2208/proce1989.37.240

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  • 長周期波の局所漂砂量に及ぼす効果 (共著)

    海岸工学論文集   37   279 - 283   1990

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    DOI: 10.2208/proce1989.37.279

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  • Laboratory Study on Sand Suspension Due to Breaking Waves (共著)

    Coastal Engineering in Japan   33 ( 2 )   219 - 231   1990

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  • 東京湾の津波計算と海上交通の安全性 (共著)

    日本沿岸域会議論文集   37 - 42   1989

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  • 砕波による底質の巻き上げ量に関する実験的研究 (共著)

    海岸工学論文集   36   279 - 283   1989

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    DOI: 10.2208/proce1989.36.279

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  • 海浜変形数値シミュレ-ションにおける浮遊砂の移流過程とundertowの効果 (共著)

    海岸工学論文集   36   394 - 398   1989

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    DOI: 10.2208/proce1989.36.394

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  • Sediment Transport Rate in Wave-Current Coexistent Field (共著)

    Coastal Engineering in Japan   32 ( 2 )   161 - 171   1989

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  • Long-wave Component in Near-bottom Velocities under Randam Waves on a Gentle Slope (共著)

    Coastal Engineering in Japan   32 ( 2 )   149 - 159   1989

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  • 波と流れが任意角度で斜交する場での漂砂量 (共著)

    海岸工学論文集   36   304 - 308   1989

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    DOI: 10.2208/proce1989.36.304

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  • 粘弾塑性体モデルによる底泥移動量の評価法 (共著)

    海岸工学論文集   36   334 - 338   1989

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    DOI: 10.2208/proce1989.36.334

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  • 緩勾配斜面上における不規則波の底面流速変動特性に関する研究 Reviewed

    佐藤愼司, 諌山太郎, 柴山知也

    第35回海岸工学講演会論文   35   78 - 82   1988

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    Language:Japanese   Publisher:Japan Society of Civil Engineers  

    DOI: 10.2208/proce1970.35.78

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  • 二成分合成波の砕波限界と長周期変動の相互関係に関する研究 Reviewed

    佐藤愼司, 尾崎元久, 柴山知也

    第35回海岸工学講演会論文   35   187 - 191   1988

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    DOI: 10.2208/proce1970.35.187

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  • 波動場における大口径円柱周辺の局所洗掘に関する研究

    斉藤 栄一, 佐藤 慎司, 柴山 知也

    海岸工学講演会論文集   35   392 - 396   1988

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    DOI: 10.2208/proce1970.35.392

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  • 波による底泥の移動現象に関する研究

    柴山 知也, 佐藤 慎司

    海洋開発論文集   3   107 - 112   1987

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    DOI: 10.2208/prooe.3.107

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  • MUD MASS TRANSPORT DUE TO WAVES. Reviewed

    Tomoya Shibayama, Hiroshi Takikawa, Kiyoshi Horikawa

    Coastal Engineering Journal   29   151 - 161   1986.12

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  • Mud Mass Transport due to Waves (共著)

    Coastal Engineering in Japan   29   151 - 162   1986

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  • A Numerical Model for Two-Dimensional Beach Transformation (共著) Reviewed

    SHIBAYAMA Tomoya, HORIKAWA Kiyoshi

    Doboku Gakkai Ronbunshu   357 ( (]G0002[)-3 )   167 - 176   1985

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Civil Engineers  

    DOI: 10.2208/jscej.1985.357_167

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  • SEDIMENT SUSPENSION DUE TO BREAKING WAVES. Reviewed

    Tomoya Shibayama, Kiyoshi Horikawa

    Coastal Engineering in Japan   25   163 - 176   1982.1

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  • Sediment Suspension due to Breaking Waves (共著)

    Coastal Engineering in Japan,JSCE   25   163 - 176   1982

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  • BED LOAD MEASUREMENT AND PREDICTION OF TWO-DIMENSIONAL BEACH TRANSFORMATION DUE TO WAVES. Reviewed

    Tomoya Shibayama, Kiyoshi Horikawa

    Coastal Engineering in Japan   23   179 - 190   1980.1

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  • Bed Load Measurement and Prediction of Two-Dimensional Beach Trnasformation

    Coastal Engineering in Japan, JSCE (共著)   23   191 - 203   1980

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  • Laboratory Study on Sediment Transport Mechanism due to Wave Action (共著)

    ( 296 )   131 - 141   1980

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  • 首都直下地震による東京湾内津波の挙動と災害危険度の評価

    海洋開発論文集   26   219 - 223  

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Books

  • カラー図説 高潮・津波がわかる --沿岸災害のメカニズムと防災--

    柴山知也( Role: Sole author)

    朝倉書店  2023.8  ( ISBN:9784254160796

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  • Coastal disaster surveys and assessment for risk mitigation

    柴山, 知也, Esteban, Miguel

    CRC Press  2023  ( ISBN:9780367741280

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    Total pages:xv, 379 p.   Language:English  

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  • 海岸工学 -- よくわかる海岸と港湾

    ( Role: Edit)

    森北出版  2021.5 

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  • Hydraulics

    SHIBAYAMA, Tomoya( Role: Edit)

    Corona Publishing  2019.9 

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  • Handbook of Coastal Disaster Mitigation for Engineers and Planners

    Miguel Esteban, Hiroshi Takagi, Tomoya Shibayama( Role: Joint editor)

    Elsevier  2015.1  ( ISBN:9780128010600

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    Language:English   Book type:Scholarly book

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  • Japanese Coast

    Tomoya Shibayama, Hajime Kanyanne, Miguel Esteban( Role: Joint editor)

    2013.5  ( ISBN:9784254160659

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  • 3.11津波で何が起きたか

    柴山 知也

    早稲田大学出版部  2011.12  ( ISBN:9784657113047

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  • Coastal Processes--Concepts in Coastal Engineering and Their Application to Multifarious Environment

    Tomoya Shibayama

    World Scientific  2009.1 

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  • 建設技術者の倫理と実践 増補・改訂版

    柴山知也

    丸善  2004  ( ISBN:4621074075

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  • 漂砂環境の創造に向けて

    土木学会, 海岸工学委員会, 編集代表, 河田恵昭, 柴山知也( Role: Joint editor)

    土木学会・丸善(株)  1998.7  ( ISBN:4810602222

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  • 建設社会学-土木技術者・国際開発技術者のための社会学入門-

    柴山知也

    山海堂  1996  ( ISBN:4381009371

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MISC

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Presentations

  • Recent Studies on Coastal Disaster Mitigation with Implications for Ports (Keynote Address)) Invited

    Shibayama, T

    PIANC APAC  2024.8 

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    Event date: 2024.8    

    Language:English   Presentation type:Oral presentation (keynote)  

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  • Recent Studies on Coastal Disaster (Keynote Lecture) Invited

    Shibayama, T

    SASDiR 2024 (Strengthening Disaster Resilience in Africa): Transdisciplinary Approaches and Sustainable Solutions (DR-AFRICA) at Mauritius  2024.8 

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    Event date: 2024.8    

    Language:English   Presentation type:Oral presentation (keynote)  

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  • Recent Studies on Coastal Disaster Mitigation (Keynote Lecture) Invited

    Shibayama, T

    SMART 2024: Structures and Materials: Advances, Research, and Technologies (SMART), Association of Structural Engineers of the Philippines (ASEP)  2024.5 

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    Event date: 2024.5    

    Language:English   Presentation type:Oral presentation (keynote)  

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  • Coastal Disaster Surveys and Risk Mitigation---Recent Topics, Invited Keynote Lecture Invited

    Tomoya Shibayama

    14th International Conference on Coasts, Ports and Marine Structures (ICOPMAS) in Tehran, Iran  2023.5 

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    Event date: 2023.5    

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  • 2011 Tohoku Earthquake and Tsunami, the Aftermath and the Recovery Process Invited

    Tomoya Shibayama

    Australasian Coasts and Ports  2022.4 

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    Event date: 2022.4    

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  • Field Surveys of Recent Coastal Disasters (Invited Keynote Lecture) Invited

    Tomoya Shibayama

    30th International Tsunami Symposium at Sendai in Tohoku  2021.7 

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    Event date: 2021.7    

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  • Recent Coastal Disasters over the World Invited

    Tomoya Shibayama

    PIANC Asian Seminar 2021  2021.5 

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    Event date: 2021.5    

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  • Physical Modeling of Soft Mud Movement under Wave and Current [Lecture in Short Course] Invited

    Tomoya Shibayama

    6th International Conference on the Application of Physical Modelling in Coastal and Port Engineering and Science (Coastlab16)  2016.5 

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    Event date: 2016.5    

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  • Recent Progress of Physical Modelling Based on Field Investigations of Tsunamis and Storm Surges (Key Note Lecture) Invited

    Tomoya Shibayama

    6th International Conference on the Application of Physical Modelling in Coastal and Port Engineering and Science (Coastlab16)  2016.5 

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    Event date: 2016.5    

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Awards

  • The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology: The Prizes for Science and Technology (Field of Understanding Enhancement)

    2024.4   Minister of Education, Culture, Sports, Science and Technology, Japan  

    Tomoya Shibayama

  • Prime Minister's Award for Distinguished Service in Promoting Japan as a Maritime Nation

    2023.8   Prime Minister of Japan   Contributed to marine disaster prevention through on-site surveys of tsunamis and storm surges and proposals for disaster prevention measures, and achieved remarkable results.

    Tomoya Shibayama

  • Merit Award, Japan Society for Coastal Zone Studies

    2023.7   Japan Society for Coastal Zone Studies   Contributions to the advancement of comprehensive interdisciplinary research on coastal areas and to the development of academic societies

    Tomoya Shibayama

  • Civil Engineering Achievement Award

    2023.6   Japan Society of Civil Engineers   Contribution for the development of Civil Engineering

  • Okuma Memorial Academic Award

    2022.11   Waseda University   Analysis of Coastal Disasters and Assesment for Risk Mitigation

  • Hamaguchi Award

    2019.11   Minister of Land, Infrastructure and Transport   Research on Tsunamis and Storm Surges

    SHIBAYAMA, Tomoya

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Research Projects

  • Co-operative Research with Canada on Coastal Disaster Study in Artic Sea

    Grant number:20KK0107  2020.10 - 2026.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))  Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))  Waseda University

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    Grant amount: \18720000 ( Direct Cost: \14400000 、 Indirect Cost: \4320000 )

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  • Greater Tokyo Innovation Ecosystem(GTIE)

    2021 - 2025

    科学技術振興機構  産学が連携した研究開発成果の展開 研究成果展開事業 大学発新産業創出プログラム(START) スタートアップ・エコシステム形成支援  東京大学

    渡部 俊也, 各務 茂夫, 笠原 博徳, 柴山 知也, 渡辺 治, 辻本 将晴

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    Authorship:Principal investigator 

    1 全体概要
    本構想は、国際競争力の強化、スタートアップの創出や成長、GreaterTokyoの経済の持続的な発展を実現し、また、エコシステムによるイノベーションを社会に実装し、地域に還元する活動を行うことを目的とした「スタートアップ・エコシステム 東京コンソーシアム」に参画する、大学と地方公共団体、大学発イノベーションの取り組みをさまざまな形で支援する民間機関が結集して進めるものである。
    SCORE大学推進型(拠点都市環境整備型)に採択されたプラットフォームを主宰している早稲田大学・東京工業大学、そして起業家の輩出などについて随一の成果を上げている東京大学の3機関による共同主幹体制とし、以下のプロジェクトを進める。

    2 実施項目ごとの概要
    (1)起業活動支援プログラムの運営
    本構想においてGTIEサーチファンド(GSF)を設置する。GSFは次の5つの機能を持つ。第1に「経営者人材と研究者とのマッチング(チーム形成)支援」、第2に「GAPファンド提供」、第3に「メンタリング・カスタマーデベロップメント提供」、第4に「シード出資獲得支援」、第5に「大企業とのマッチング支援」である。GTIE予算の一部を用いたGAPファンド提供を行うと同時に、新たにファンディングスキームを構築し、協力機関を中心とした民間企業からの資金提供を受け入れる。GTIEがファンドマネージャを設置し、GAPファンドの募集・選考・審査・運用、そして伴走支援を行う。民間資金に係る受け入れや支援のファンディングスキームも今後検討する。

    (2)アントレプレナーシップ人材育成プログラムの開発・運営など
    EDGE-NEXTプログラムで主幹機関を務めている東京大学、早稲田大学がそれぞれ実施しているプログラムを総動員し、本構想のステイクホルダーにシームレスに提供でき、コンソーシアムの受講を希望する全ての者がプログラムを受講できる体制を目指す。特に東京大学では1)研究成果や技術を新産業創出に結び付けるマインドおよびスキルを持つ研究者やエンジニアの育成、早稲田大学では2)小中学高校生への教育プログラム、3)東京外の地域も含めた社会的課題の解決に係るプログラム、を共同機関・協力機関などに広く展開する。また、海外機関との協働プログラムや、仮説構築・検証などの手法において国際通用性の高いプログラムに重点的に取り組む。

    (3)起業環境の整備
    GTIE主幹機関の一つである東京工業大学の田町キャンパス(キャンパスイノベーションセンター東京:CIC)の2階から4階の一部を用いてインキュベーション・アクセラレーション機能を持つGTIE活動拠点を形成し、専門家・メンターの配置、コミュニティスペースの運用、ラジオブース、フリー席、オープン席の活用を行う。さらに懇談会、イベント、起業支援セミナー、アイデアソン、ワークショップなどを短サイクルで実施し、コミュニティの活性化を継続的に行う。また、スタートアップが入居可能なオフィスの賃料をエクイティで支払えるようにするなど制度・ルールの検討・提案を行い、インキュベーション施設運営と連携した活動を展開する。

    (4)拠点都市のエコシステムの形成・発展
    GTIEおよび東京コンソーシアムの参画機関のネットワークを相互接続し、特に海外ベンチャーキャピタルやアクセラレーターなどとの協業・イベントなどを積極的に進め、ユニコーン創出の確度を飛躍的に高める。本事業においては早稲田大学の国内外のグローバルネットワークを主としつつ、東京大学・東京工業大学や共同機関などのネットワークを総動員し、協力機関に名を連ねている海外組織や民間のイノベーション・コミュニティ創出支援組織と密に連携し、GTIEのコミュニティを形成し、発展させていく。

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  • 早稲田大学

    2020 - 2024

    科学技術振興機構  産学が連携した研究開発成果の展開 研究成果展開事業 大学発新産業創出プログラム(START) 大学推進型  早稲田大学

    笠原 博徳, 柴山 知也

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    Authorship:Principal investigator 

    知財創出、ベンチャー起業・アクセラレーション、産官学連携、高付加価値製品創出、人材育成をスパイラルアップし社会への貢献を目指す早稲田オープンイノベーション・エコシステムを、本事業を駆動力として推進する。
    経営・財務・法律など起業に必要なチーム構築支援を、本学ビジネススクールおよび成功企業を創立した経験豊かな校友、提携VCからのアドバイスも得ながら進め、質の高い活動支援プログラムの提供を目指す。
    また、育成企業の世界市場への進出も視野に、米国のファンドおよびアクセラレータとも連携し、世界レベルの質を備えたベンチャー支援プログラムの確立を目指す。併せて、内閣府事業「スタートアップ・エコシステム拠点都市注)」の「グローバル拠点都市」に採択された「スタートアップ・エコシステム 東京コンソーシアム」における活動を通じ、アクセラレーションの強化と戦略的な海外展開を図る。

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  • 持続可能な開発のための災害リスク低減とレジリエンスのガバナンス再活性化

    2020 - 2023

    科学技術振興機構  国際的な科学技術共同研究などの推進 戦略的国際科学技術協力推進事業 Belmont Forum  早稲田大学

    柴山 知也

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    Authorship:Principal investigator 

    災害と開発の相互作用や地域社会のガバナンスの研究に焦点を当て、災害リスクの低減と防災のためのレジリエンス強化のための効果的な災害リスク管理の実現を目指す。

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  • Investigation of the effects of long-term power outage due to the 2019 typhoon Faxai

    Grant number:19K24677  2019.10 - 2021.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Special Purposes  Chiba University

    Yoshihisa Maruyama

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    Grant amount: \30810000 ( Direct Cost: \23700000 、 Indirect Cost: \7110000 )

    A powerful typhoon Faxai, the 15th typhoon in 2019, made landfall in Tokyo’s neighboring Chiba Prefecture around 5:00 a.m. on September 9. It caused severe structural damage especially in the southwestern part of Chiba Prefecture. It also triggered extensive and continued power outage in Chiba Prefecture. Power supply was disrupted at approximately 640 thousand houses in Chiba Prefecture as of 10:30 am on September 9. The power failure continued for about two weeks mainly in the southern part of Chiba Prefecture. In this study, various functional and structural damage caused by this typhoon was investigated. In Japan, it is anticipated that extensive power outages may occur after the Tokyo Inland and the Nankai Trough earthquakes in the near future. This study will be helpful to establish a resilient water supply system against future earthquakes.

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  • スンダ海峡津波の被害と住民の対応の調査

    2019    

    科学技術振興機構  国際的な科学技術共同研究などの推進 戦略的国際科学技術協力推進事業 J-RAPID  早稲田大学

    柴山 知也

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    アナク・クラカトア火山噴火に伴う津波の伝播特性と津波来襲に伴う沿岸域での被災の状況を、現地調査と数値シミュレーションを駆使して解明する。現地調査ではすでに行った予備調査の結果を踏まえて、津波浸水高の地域分布特性を広域にわたって把握する。これにより、津波の発生、伝播から被災に至るメカニズムを分析する。また、津波来襲時の住民行動を質問紙調査法とインタビューにより分析する。今回の津波では地震動などの津波に先立つ現象を感知できなかったために、避難開始が遅れたことが予備調査で分かっている。以上の2つの方法により、将来の火山津波に対する有効な防災方略を提言する。本研究終了後に、インドネシアチームは研究結果を所属大学の地元でもあるスンダ海峡周辺地域の現地での今後の対応に応用していく。

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  • Study on impact of dredged pit on coastal environment and its environmental management methodology

    Grant number:19360220  2007 - 2010

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)  Yokohama National University

    SASAKI Jun, SHIBAYAMA Tomoya, TAKAGI Hiroshi

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    Grant type:Competitive

    Grant amount: \19760000

    Appearance of anoxia and hydrogen sulfide in dredged pits causing mortality of benthic animals is considered as one of the most serious water quality problems in polluted bays. Adverse impacts on marine environments in shallows and tidal flats due to upwelling of anoxic waters are also of great concern. In this study, we performed field measurements and numerical modeling of anoxia and hydrogen sulfide processes. Using the model, we elucidated the impacts of dredged pits on surrounding environments and developed an effective management methodology on the basis of application of water duct technology.

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  • 津波被災機構の解明と途上国の防災体制整備への応用

    Grant number:07F07835  2007 - 2009

    日本学術振興会  科学研究費助成事業  特別研究員奨励費 

    柴山 知也, ESTEBAN M., ESTEBAN Miguel

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    Grant amount: \2200000 ( Direct Cost: \2200000 )

    沿岸地域での自然災害には頻度の高いものと低いものがあるが、これらの災害による損害は、近年の増加する沿岸域人口密度のため急速に増加している。本研究では主に津波と高潮を取り上げており、頻度は低いけれどもインパクトの大きい災害を取り上げている。発展途上国の沿岸地域に存在している自然災害の危険性の様々な形態に対するリスク管理は揺籠期にあり、特に高潮のように台風に起因するものは、地球環境の変動によって台風の挙動が変化するために今後の対策を立案することが困難である。本研究では、災害へのリスクマネジメントの現状を分析して、災害の予防性を改良する方法を考察した。特に台風の変動による港湾施設の利用率の変化を取り上げた。地球規模の気候変動とそれに伴う台風の挙動の変化がどのように地域の災害管理に影響するかに関しては台湾をケーススタディとして検討した。
    一方で、このような外力が、港湾構造によく使われているケーソン防波堤に作用した場合にどのような被災が起こるかについて、水理実験、数値シミュレーションによって検討した。また、様々な文献資源を収集し、自然災害とその対策に関する情報を収集し、これらを分類整理した。昨年までの成果を踏まえて、気候変動による台風の変化による経済活動への影響、および津波による構造物の破壊を取り上げてケーソン防波堤の安定性を具体的に検討した。また、津波高潮など沿岸域災害対応策に関連する論文を海岸工学に関する国際会議(OMAE、 Breakwater Conference, Coastal Dynamics)等で発表した。2009年8月に早稲田大学大隈小講堂において開催された「アジアとアフリカにおける沿岸域の防災・環境・管理に関する研究集会」においても、ベトナム、インドネシア、タイ、スリランカ、タンザニア、イギリス、カナダ、日本など各国の研究者とともに沿岸防災について議論し、本研究成果を伝達した。

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  • A Developmental Psychological Research on Ethics Formation Processes among Civil Engineers

    Grant number:17612007  2005 - 2007

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)  Kamakura Women's University

    SHIBAYAMA Makoto, SHIBAYAMA Tomoya

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    Grant type:Competitive

    Grant amount: \3830000

    This study focused civil engineers' participation processes in civil projects with two key concepts : individuals with relationship to others and participation in everyday activities.
    We performed two researches and made educational materials for Civil Engineers' Ethics.
    (1) Network Analysis
    One research titled An Analysis of Civil Engineer's Society Using the Theory of Network is a survey with focus on individuals with relationship to others. In this research, Network Analysis was borrowed and networks among civil engineers' society were analyzed. As a result, civil engineers' behaviors were influenced from the social position of their own group in civil engineers' society. Civil engineers belonging to higher ranked groups in civil engineers' society are eager to obey Civil Engineers' Ethics.
    (2) Ethnography
    The other research titled Analysis of Decision Making Process of Engineers by using Ethnography is a fieldwork study with focus on participation in everyday activities. Our research assistant participated in the real tunnel construction field as a trainee of civil engineer for about three weeks. In this study, decision making processes among civil engineers who were gathered on the purpose of a tunnel construction, were analyzed. As a result, they shared the Inter-dependent Self that is a social representation spread among East Asia. An individual express himself depending on relationship with others. The target civil engineers would not express their doubts or questions, though they were aware of them.
    (3) Educational materials for Civil Engineers' Ethics
    We proposed the new educational method for Civil Engineers' Ethics and made educational materials for Japanese civil engineers and foreign civil engineers based on the two researches.

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  • Field investigation and numerical simulation of long-term sedimentary processes in a bay

    Grant number:15360263  2003 - 2006

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)  Yokohama National University

    SASAKI Jun, SHIBAYAMA Tomoya

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    Grant type:Competitive

    Grant amount: \13600000

    We first conducted a field survey to reveal the thickness of polluted mud layer in Tokyo Bay using a method of bottom sounding based on two supersonic waves. There were, however, some problems for this method. We thus tried to reveal spatial variation in mud quality directly on the basis of sediment core sampling. We developed a core sampling method using an Ekman barge sampler altered to take mud core samples efficiently. We collected more than 50 core samples in the inner part of the bay and sliced them every about 1cm from the surface of the sediment to the deep layer. Then we measured water content, sediment grain size distribution, total organic carbon and nitrogen, and carbon and nitrogen stable isotope ratio. We elucidated higher organic content mud is accumulated around the central part of the inner bay while lower organic content sediment is accumulated around it. A three-dimensional and multi-class sediment accumulation model was developed to reproduce and understand the sediment accumulation processes considering the variation in sediment grain size. We reproduced muddy sediment accumulation processes in the bay. On the basis of field investigation and numerical experiments as well as former field data, we analyzed the mechanism of the formation of these sedimentary processes such that finer particles adsorb larger amount of organic matter and settling and resuspension processes are dominant factors. Moreover, observed lower C/N values at the central part are also one of the major causes of the formation of spatial variation in sediment quality because the waters in the central part are exposed to hypoxia for longer time than those of their surrounding waters, which makes the rate of mineralization lower.

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  • LABORATORY AND FIELD EXPERIMENTS AND DEVELOPMENT OF NUMERICAL NUMERICAL MODEL FOR 3-D FLUID MOTION AND SEDIMENT MOVEMENT DUE TO WAVE BREAKING

    Grant number:13450203  2001 - 2002

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)  TOKYO UNIVERSITY OF FISHERIES

    OKAYASU Akio, MORI Nobuhito, SHIBAYAMA Tomoya, KANEHIRO Haruyuki

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    Grant type:Competitive

    Grant amount: \15300000

    TWO-DIMENSIONAL SUSPENDED SEDIMENT DISTRIBUTION CAUSED BY WAVE BREAKING ON A SLOPE WAS MEASURED IN A LABORATORY WAVE FLUME BY USING A CT TYPE SEDIMENT METER. THE 2-DIMENSIONAL SEDIMENT CONCENTRATION WAS OBTAINED FROM ATTENUATION RATE OF TRANSMITTED LASER POWER. IT WAS CONFIRMED THAT CONCENTRARION CAN BE QUANTITATIVELY EVALUATED. SIZE AND MOVEMENT OF SUSPENDED SEDIMENT CLOUDS WERE INVESTIGATED.
    THREE-DIMENSIONAL FLUID MOTION CAUSED BY WAVE BREAKING WAS MEASURED IN A LARGE WAVE FLUME BY USING AN ARRAY OF ACOUSTIC DOPPELAR VELOCIMETERS. VELOCITY VECTORS AND VORTICITY WERE CALCULATED FROM MEASURED DATA. TURBULENCE BY LOCAL EDDIES AND TURBULENCE PROPERTIES WERE INVESTIGATED. IT WAS FOUND THAT STRENGTH OF HORIZONTAL VORTICES INCREASE, THEN DECREASE WITH BREAKING WAVE PROPAGATION AND VERTICAL VORTICES ARE RELATIVELY WEAK NEAR THE BREAKING POINTS. VORTICITY BECOMES HOMOGENIOUS IN THE INNER SURF ZONE.
    IN ORDER TO EVALUATE INTERMITTENCY AND THREE-DIMENSIONALITY OF ORGANIZED EDDIES IN THE SURF ZONE, FIELD EXPERIMENTS WERE CONDUCTED WITH AN OBSERVATION ARRAY OF VELOCIMETERS AND SEDIMENT METERS. IT WAS FOUND THAT VELOCITY ACCERELATION AND TURBULENCE SHOW HIGH CORRELALTION AND CORRELATION BETWEEN THESE PROPERTIES AND SEDIMENT CONCENTRAION IS ALSO HIGH. INTERMITTENCY OF SEDIMENT PICKUP BY WAVE BREAKING WAS SHOWN AND THE PICKUP EVENTS COULD BE DETECTED BY FLUID VELOCITY AND ACCERELATION.

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  • Mud Beach Processes under Waves

    Grant number:11450187  1999 - 2000

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B).  Yokohama National University

    SHIBAYAMA Tomoya, KATAYAMA Hiroyuki, OKAYASU Akio

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    Grant type:Competitive

    Grant amount: \15000000

    The present study aims on numerical simulation of various processes of wave-mud interaction on mud shore profiles, i.e., two-dimensional profiles covered with cohesive materials, including determination of fixed bed elevation and thickness of mobile mud layer, surface erosion, wave height attenuation, mud mass transport and profile deformation.
    The location of fixed bed is determined by comparing the vertical profiles of wave-induced shear stress, calculated by an analytical elastic model, and yield strength. Erosion rate is calculated by an empirical formula, expressed as a function of maximum shear stress at bed surface and water content of mud.
    Wave height transformation is computed from energy conservation equation, including the energy dissipation of the mud bed. Formulation of wave decay is also extended to the surf zone, combining both energy dissipation rates of mud bed and wave breaking. In this regard, the hydrodynamic model combines different effects of shoaling, wave attenuation and wave breaking.
    The rheological constitutive equations of visco-elastic-plastic model (Shibayama et al., 1989) are selected for numerical modeling of wave-mud interaction and downward gravity-driven flow of mud layer. Multi-layered models are used to calculate mud mass transport velocities under the external forces, i.e., pressure gradients of the passing wave and gravity. Net transport rate is then determined by superimposition of the results. Finally, the deformation of the shore profile is determined from mass conservation equation, considering net mud mass transport and surface erosion.
    A series of wave flume experiments have been performed to obtain the required data on sloping bed, such as wave height distribtution, mud mass transport velocity, and profile change of muddy bed. Although the offshore and onshore boundaries of the limited mud section are effective on the measured parameters, comparison of the numerical results and laboratory data reveals that the model is able to predict the observed phenomena. The numerical results are also compared with the laboratory data of Nakano (1994). The model well predicts the bottom deformation for all different combinations of wave height and water content of mud.

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  • Mechanism of Coastal Environmental Change under Development

    Grant number:08041120  1996 - 1997

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for international Scientific Research  Yokohama National University

    SHIBAYAMA Tomoya, TORIDE Nobuo, KAYANNE Hajime, YAMANOUCHI Yasuhide, OKAYASU Akio

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    Grant type:Competitive

    Grant amount: \7500000

    In the project, the main theme was to clarify 'What is environmental effect of development in coastal region? '. In many examples, development projects are necessary and environmental problem sometimes comes to restriction condition for the planning of development projects. In the project, we noticed that the problems between development and environment change depending on situation of each country. The investigated countries are Thailand, Vietnam, Malaysia, Myanmer and Cambodia.
    There are variety of development projects in coastal region according to development stages of country economy. They are port construction, reclamation for industrial area, agriculture development, fishery port construction, resort facilities and disaster prevention such as flood control and storm surge protection. Upon the construction projects, there are several kinds of environmental impacts. They are beach erosion, water quality change including the generation of red tide or bule tide, and ecology change which are loss of mangrove forest or loss of shallow water area due to reclamation works.
    From engineering aspect, it is very important to predict future environmental problem. It is necessary to collect date by for example field observations. We have variety of simulation methods and they can be divided into two categories, numerical experiments (computer simulation) and hydraulic experiments (laboratory model test). We have long experiences for these two techniques. However, these methods are limited to short term prediction raging from days to years. If we follow the result of prediction by using these methods, we will have a number of "un-expected results" in long term prediction as we did in our history. In order to improve this point, it is very important to do case studies which have time ranges from 10 to 100 years. This type of analysis based on long time period is very useful to consider environmental impacts.
    The other important view point is that the small scale development as well as large scale development is important since even small scale development works will result big environmental impacts. Here small scale project includes recreation facilities or fishery ports.
    Time history of occurrences of these coastal engineering problems is compared with economical and social development stage of each country. It is concluded that coastal problems are closely related with industrialization and development stages. Also, we confirmed that the exchange of ideas based on their own experiences will be very fruitful for coastal engineers to cope with environmental problems due to new development projects in coastal region. In asian region, we have common problems in coastal area development.

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  • Evaluation of sediment transport under waves and currents

    Grant number:07650590  1995 - 1996

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)  Yokohama National University

    SHIBAYAMA Tomoya, OKAYASU Akio

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    Grant type:Competitive

    Grant amount: \2500000

    A numerical model is developed to predict bottom topography changes around river mouth. The wave field is calculated by using mild slope equation with including wave-current interaction effect. Near-bottom velocity variations and the distribution of radiation stress are evaluated by using the calculated wave field. The current field associated with sand movement is calculated including wave induced current and river discharge. The river current is introduced into the model as a boundary condition. Since we included wave-current interaction, it was necessary to calculate by iteration process in order to get converged solutions for wave and current field.
    Bed load transport rate is calculated from bottom shear stress caused by wave orbital motion, wave induced nearshore current and river current. Suspended sand discharge from the river and suspended sand due to wave breaking are also included in the model. The wave field, current field and bottom topography changes are compared with laboratory results in order to examine the accuracy of numerical model.
    Laboratory experiments are performed in a wave basin designed to facilitate the understanding of the mechanism of sand movement as well as the behavior of wave and current field around river mouth. Well-sorted sand (median diameter 0.15mm) are laid in the wave basin to make an 2.5 times 2.3 meter test bed with the initial slope of 1/20. A river mouth with water discharge was installed at upper end of the test bed. The distribution of wave height and the variation of near-bottom velocities in the test section are measured in details by using capacitant wave gages or an ultra-sonic velocity meter respectively for three conditions of monochromatic waves and river discharges.
    From comparisons, we can judge that the present numerical model, which includes wave-current interaction, bed load and suspended load due to wave breaking and river discharge, can predict laboratory results of beach changes in the vicinity of river mouth areas.

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  • Characteristics of Wave and Current Field around a Longitudinal Reef System

    Grant number:07405024  1995 - 1996

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)  Yokohama National University

    GODA Yoshimi, OKAYASU Akio, SHIBAYAMA Tomoya

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    Grant type:Competitive

    Grant amount: \21700000

    The objective of this research is to clarify the characteristics of wave and current field around a newly developed "Longitudinal Reef System". A system of longitudinal reefs was tested in a wave basin for wave heights and currents distribution. A numerical model based on the parabolic equation was also examined by the experimental results.
    1) A system of three units of longitudinal reefs was placed in a wave basin. Wave heights and currents were measured for obliquely incident regular and irregular waves. It was confirmed that the wave energy was efficiently dissipated by the system and water exchange with offshore region was improved.
    2) A numerical model with the radiation stress computed by the parabolic equation yielded wave-induced currents which were in good agreement with experimental results.
    3) A statistical approach was adopted for the numerical calculation for the case of irregular waves. The model gave a good agreement with the experimental results.
    4) Current field induced by a system of seven units was numerically investigated. Large decay of the wave energy by the system showed the effective function for coastal protection of the system.

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  • Survey of Coastal Environment under Development Project

    Grant number:04041049  1992 - 1993

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for international Scientific Research  Yokohama National University

    SHIBAYAMA Tomoya, OKAYASU Akio, SATO Shinji

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    Grant type:Competitive

    Grant amount: \8000000

    In the project, the main theme was to clarify 'What is sustainable development in coastal region? '. In many examples, development projects are necessary and environmental problem sometimes comes to restriction condition for the planning of development projects. In the project, we noticed that the problems between development and environment change depending on situation of each country.
    There are variety of development projects in coastal region. They are port construction, reclamation for industrial area, agriculture development, fishery port construction, resort facilities and disaster prevention such as flood control and storm surge protection. Upon the construction projects, there are several kinds of environmental impacts. They are beach erosion, water quality change including the generation of red tide or blue tide, and ecology change which are loss of mangrove forest or loss of shallow water area due to reclamation works.
    From engineering aspect, it is very important to predict future environmental problem. It is necessary to collect data by for example field observations. We have variety of simulation methods and they can be divided into two categories, numerical experiments (computer simulation) and hydraulic experiments (Laboratory model test). We have long experiences for these two techniques. However, these methods are limited to short term prediction raging from days to years. If we follow the result of prediction by using these methods, we will have a number of "un-expected results" in long term prediction as we did in our history. In order to improve this point, it is very important to do case studies which have time ranges from 10 to 100 years. This type of analysis based on long time period is very useful to consider environmental impacts.
    The other important view point is that the small scale development as well as large scale development is important since even small scale development works will result big environmental impacts. Here small scale project includes recreation facilities or fishery ports.
    As a conclusion of the project, we confirmed that the exchange of ideas based on their own experiences will be very fruitful for coastal engineers to cope with environmental problems due to new development projects in coastal region. In Asian region, we have common problems in coastal area development.

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  • A Numerical Model for Mud Mass Transport in Coastal Environment

    Grant number:03650417  1991 - 1992

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for General Scientific Research (C)  Yokohama National University

    SHIBAYAMA Tomoya, OKAYASU Akio, SATO Shinji

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    Grant type:Competitive

    Grant amount: \1900000

    A theoretical and experimental investigation has been undertaken to clarify the interaction between wave-current and mud bed. The characteristics of this interaction are the high wave attenuation and the mud mass transport in the bed layer. Modeling this interaction is mainly based on the theologecal properties of mud.
    Based on the recent progresses on the rheological measurements of mud, a model called the visco-elastic-plastic model is proposed. According to this model, the mud has two states. When the shear stress is less than or equal to the yield stress, the mud is in viscoelastic state, and when the shear stress is greater than the yield stress, the mud is in viscoplastic state. An experiment has been carried out by using an oscillatory type viscoelastic meter to investigate rheological parameters when mud is in the viscoelastic state. The results reveal that the viscosity and the elasticity modulus of mud depend on the water content of mud and the oscillatory period. The empirical formulas to express these dependents are then established.

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  • 波による底泥輸送の定量的予測

    Grant number:63750519  1988    

    日本学術振興会  科学研究費助成事業  奨励研究(A)  横浜国立大学

    柴山 知也

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    Grant amount: \900000 ( Direct Cost: \900000 )

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  • A Study On Beach Transformation Due To Irregular Waves

    Grant number:60420039  1985 - 1986

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for General Scientific Research (A)  The University of Tokyo

    HORIKAWA Kiyoshi, SHINJI Sato, TOMOYA Shibayama, WATANABE Akira

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    Grant type:Competitive

    Grant amount: \29700000

    The objective of the present study is to investigate the characteristics of the sediment transport and to develop a numerical model of two-dimensional beach transformation due to irregular waves.
    1. Velocities in the surf zone were measured in detail by using a split-hot-film sensor and a laser-Doppler velocimeter. Characteristics of wave transformation as well as near bed velocity variations were described under regular and irregular waves.
    2. A number of experiments were carried out in an oscillatory flow tunnel in order to understand the mechanics of sediment movement due to asymmetric and irregular oscillatory flows.
    3. Experiments on beach transformation under irregular waves were performed in a two-dimensional wave flume. Numerical simulation model was then developed and the effect of wave irregularity on beach deformation was discussed in detail.

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  • 波による軟らかい底質粘土の輸送機構

    科学研究費助成事業(東京大学)  科学研究費助成事業(一般研究(C))  一般研究(C) 

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    Grant type:Competitive

    Grant amount: \2000000

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  • 堆積底泥の波による再浮遊機構に関する研究

    科学研究費助成事業(東京大学)  科学研究費助成事業(環境科学特別研究)  環境科学特別研究 

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    Grant type:Competitive

    Grant amount: \3100000

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  • 臨海型高密度都市域の地震に対する災害危険度

    科学研究費助成事業(横浜国立大学)  科学研究費助成事業(重点領域研究)  重点領域研究 

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    Grant type:Competitive

    Grant amount: \1700000

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  • 多方向不規則波浪場における漂砂量の推定法に関する研究

    科学研究費助成事業(横浜国立大学)  科学研究費助成事業(一般研究(B))  一般研究(B) 

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    Grant type:Competitive

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  • 任意断面地形上の砕波帯における不規則波浪のエルネギ-変換過程

    科学研究費助成事業(横浜国立大学)  科学研究費助成事業(一般研究(B))  一般研究(B) 

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    Grant type:Competitive

    Grant amount: \6700000

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  • 工学倫理教育の方法論開発

    科学研究費助成事業(横浜国立大学)  科学研究費助成事業(萌芽研究)  萌芽研究 

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    Grant type:Competitive

    Grant amount: \2800000

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  • アジア諸国における海岸ネットワークの構築と海岸工学上の諸問題の整理

    科学研究費助成事業(名古屋工業大学)  科学研究費助成事業(基盤研究(C))  基盤研究(C) 

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    Grant type:Competitive

    Grant amount: \3200000

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  • Survey of Mechanism of Coastal Environmental Change under Development

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    Grant type:Competitive

    Grant amount: \12500000

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  • 化学量論に基づく地球温暖化後の内湾生態系応答シナリオに関する基礎的検討

    科学研究費助成事業(横浜国立大学)  科学研究費助成事業(萌芽研究)  萌芽研究 

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    Grant type:Competitive

    Grant amount: \3400000

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  • 東京湾環境情報ネットワークの構築と新たな研究実施枠組みの提案

    科学研究費助成事業(横浜国立大学)  科学研究費助成事業(基盤研究(C))  基盤研究(C) 

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    Grant type:Competitive

    Grant amount: \3500000

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  • 建設現場での意志決定プロセスの建設社会学的研究

    科学研究費助成事業(横浜国立大学)  科学研究費助成事業(萌芽研究)  萌芽研究 

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    Grant type:Competitive

    Grant amount: \3100000

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  • アジア・アフリカ地域における沿岸災害脆弱性変容の調査

    科学研究費助成事業(早稲田大学)  科学研究費助成事業(基盤研究(B))  基盤研究(B) 

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    Grant type:Competitive

    Grant amount: \16770000

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