Updated on 2025/12/06

写真a

 
MIKAMI, Takahito
 
Affiliation
Faculty of Science and Engineering, School of Creative Science and Engineering
Job title
Associate Professor
Degree
Doctor of Engineering ( Waseda University )

Research Experience

  • 2023.04
    -
    Now

    Waseda University   Department of Civil and Environmental Engineering   Associate Professor

  • 2020.04
    -
    2023.03

    Tokyo City University

  • 2017.04
    -
    2020.03

    Tokyo City University

  • 2014.04
    -
    2017.03

    Waseda University

  • 2013.04
    -
    2014.03

    Japan Society for the Promotion of Science

Education Background

  • 2011.09
    -
    2014.03

    Waseda University   Graduate School of Creative Science and Engineering   Department of Civil and Environmental Engineering  

  • 2010.04
    -
    2011.09

    Waseda University   Faculty of Science and Engineering   Department of Civil and Environmental Engineering  

  • 2006.04
    -
    2010.03

    Waseda University   School of Science and Engineering  

Committee Memberships

  • 2018.11
    -
    Now

    土木学会  海洋開発委員会 幹事

  • 2018.06
    -
    2022.05

    日本地震工学会  情報コミュニケーション委員会 委員

  • 2020.08
    -
    2020.12

    日本地震工学会  大会実行委員会 委員

  • 2019.06
    -
    2020.09

    第28回海洋工学シンポジウム実行委員会 委員

  • 2017.06
    -
    2017.11

    日本地震工学会  大会実行委員会 委員

  • 2014.06
    -
    2016.05

    土木学会  土木学会誌編集委員会 委員

▼display all

Professional Memberships

  • 　
    　
    　

    JAPAN ASSOCIATION FOR EARTHQUAKE ENGINEERING

  • 　
    　
    　

    JAPAN SOCIETY FOR NATURAL DISASTER SCIENCE

  • 　
    　
    　

    JAPAN SOCIETY OF CIVIL ENGINEERS

  • 　
    　
    　

    JAPANESE ASSOCIATION FOR COASTAL ZONE STUDIES

Research Areas

  • Disaster prevention engineering / Hydroengineering
 

Papers

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

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

    Ocean Engineering   316  2025.01

    DOI

    Scopus

    9
    Citation
    (Scopus)

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

    Yuta Nishida, Tomoya Shibayama, Takahito Mikami, Miguel Esteban

    Coastal Engineering Journal    2024

    DOI

  • FUNDAMENTAL STUDY ON WATER LEVEL MEASUREMENT USING NON-CONTACT SENSORS

    Hidehiko SEKIYA, Masato TAKAKI, Takahito MIKAMI, Shogo MORICHIKA

    Infrastructure Maintenance Practices   1 ( 1 ) 306 - 311  2022.03  [Refereed]

    DOI

  • People's perception of land subsidence, floods, and their connection: A note based on recent surveys in a sinking coastal community in Jakarta

    Hiroshi Takagi, Miguel Esteban, Takahito Mikami, Munawir Bintang Pratama, Ven Paolo Bruno Valenzuela, John Erick Avelino

    Ocean & Coastal Management   211   105753 - 105753  2021.10  [Refereed]

    DOI

    Scopus

    30
    Citation
    (Scopus)

  • Survey on inundation in Setagaya and Ota Wards due to 2019 Typhoon Hagibis

    Takahito MIKAMI, Naoaki SUEMASA, Kazuya ITOH, Tsuyoshi TANAKA

      39 ( 4 ) 377 - 390  2021.03  [Refereed]

    Authorship：Lead author

    DOI CiNii

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

    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 ) 04020056 - 04020056  2021.03  [Refereed]

    DOI

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

    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  2021.01  [Refereed]

    DOI

  • 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

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

    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 ) 445 - 459  2020.11  [Refereed]

    DOI

    Scopus

    38
    Citation
    (Scopus)

  • Adapting ports to sea-level rise: empirical lessons based on land subsidence in Indonesia and Japan

    Miguel Esteban, Hiroshi Takagi, Robert J. Nicholls, Dyah Fatma, Munawir Bintang Pratama, Shota Kurobe, Xiong Yi, Izumi Ikeda, Takahito Mikami, Paolo Valenzuela, Erick Avelino

    Maritime Policy & Management   47 ( 7 ) 937 - 952  2020.10  [Refereed]

    DOI

    Scopus

    17
    Citation
    (Scopus)

  • Uncovering unnoticed small-scale tsunamis: field survey in Lombok, Indonesia, following the 2018 earthquakes

    Vana Tsimopoulou, Takahito Mikami, Tajnova Tanha Hossain, Hiroshi Takagi, Miguel Esteban, Nuki Agya Utama

    Natural Hazards   103 ( 2 ) 2045 - 2070  2020.09  [Refereed]

    DOI

    Scopus

    6
    Citation
    (Scopus)

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

    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  2020.09  [Refereed]

    DOI

    Scopus

    4
    Citation
    (Scopus)

  • Comparative Analysis of Triggers for Evacuation during Recent Tsunami Events

    Takahito Mikami, Tomoya Shibayama, Miguel Esteban, Rafael Aránguiz

    Natural Hazards Review   21 ( 3 )  2020.08  [Refereed]

    Authorship：Lead author

    DOI

    Scopus

    6
    Citation
    (Scopus)

  • Adaptation to sea level rise: Learning from present examples of land subsidence

    Miguel Esteban, Hiroshi Takagi, Laurice Jamero, Christopher Chadwick, John Erick Avelino, Takahito Mikami, Dyah Fatma, Lilian Yamamoto, Nguyen Danh Thao, Motoharu Onuki, Joel Woodbury, Ven Paolo Bruno Valenzuela, Richard Nathan Crichton

    Ocean and Coastal Management   189  2020.05  [Refereed]

    DOI

    Scopus

    50
    Citation
    (Scopus)

  • IMPACT ASSESSMENT OF SLOSHING IN BAYS AND LAKES

    OHIRA Koichiro, TAKABATAKE Tomoyuki, MIKAMI Takahito, SHIBAYAMA Tomoya

    Journal of JSCE   8 ( 1 ) 13 - 25  2020.02  [Refereed]

    　View Summary

    <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 CiNii

    Scopus

    2
    Citation
    (Scopus)

  • 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

    DOI

    Scopus

    3
    Citation
    (Scopus)

  • 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

  • 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

  • Engineering lessons from the 28 september 2018 Indonesian tsunami: Debris loading

    J. Stolle, C. Krautwald, I. Robertson, H. Achiari, T. Mikami, R. Nakamura, T. Takabatake, Y. Nishida, T. Shibayama, M. Esteban, I. Nistor, N. Goseberg

    Canadian Journal of Civil Engineering   47 ( 1 ) 1 - 12  2020.01  [Refereed]

    DOI

    Scopus

    43
    Citation
    (Scopus)

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

    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  2019.08  [Refereed]

    Authorship：Lead author

    DOI

    Scopus

    65
    Citation
    (Scopus)

  • Understanding Community-Level Flooding Awareness in Remote Coastal Towns in Northern Chile through Community Mapping

    Carlota Cubelos, A. H. T. Shyam Kularathna, Ven Paolo Bruno Valenzuela, Nikolaos Iliopoulos, Marco Quiroz, Ramon Yavar, Pedro Henriquez, Gonzalo Bacigalupe, Motoharu Onuki, Takahito Mikami, Rodrigo Cienfuegos, Rafael Aranguiz, Miguel Esteban

    GEOSCIENCES   9 ( 7 )  2019.07  [Refereed]

    DOI

    Scopus

    19
    Citation
    (Scopus)

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

    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  2019.02  [Refereed]

    DOI

    Scopus

    54
    Citation
    (Scopus)

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

    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  2018.09  [Refereed]

    DOI

    Scopus

    39
    Citation
    (Scopus)

  • New tsunami hazard assessment of Chañaral, Chile, after the coastal morphology changes due to the 2015 river flood

    Rafael Aránguiz, Pedro Henríquez, Miguel Esteban, Takahito Mikami, Rodrigo Cienfuegos, Marco Quiroz

    Proceedings of the Coastal Engineering Conference   36 ( 2018 )  2018

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

    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  [Refereed]

    DOI

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

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

    GEOSCIENCES   7 ( 3 )  2017.09  [Refereed]

    DOI

    Scopus

    30
    Citation
    (Scopus)

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

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

    COASTAL ENGINEERING JOURNAL   59 ( 3 )  2017.09  [Refereed]

    DOI

    Scopus

    25
    Citation
    (Scopus)

  • Awareness of coastal floods in impoverished subsiding coastal communities in Jakarta: Tsunamis, typhoon storm surges and dyke-induced tsunamis

    Miguel Esteban, Hiroshi Takagi, Takahito Mikami, Aretha Aprilia, Daisuke Fujii, Shota Kurobe, Nuki Agya Utama

    INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION   23   70 - 79  2017.08  [Refereed]

    DOI

    Scopus

    43
    Citation
    (Scopus)

  • Experimental Investigations of Debris Dynamics over a Horizontal Plane

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

    JOURNAL OF WATERWAY PORT COASTAL AND OCEAN ENGINEERING   143 ( 3 )  2017.05  [Refereed]

    DOI

    Scopus

    50
    Citation
    (Scopus)

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

    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  2017.03  [Refereed]

    DOI

    Scopus

    59
    Citation
    (Scopus)

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

      36 ( 1 ) 43 - 50  2017  [Refereed]

    Authorship：Lead author

    J-GLOBAL

  • IMPACT ASSESSMENT OF SLOSHING IN BAYS AND LAKES

    OHIRA Koichiro, TAKABATAKE Tomoyuki, MIKAMI Takahito, SHIBAYAMA Tomoya

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

    　View Summary

    &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 CiNii

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

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

    JOURNAL OF HYDRAULIC ENGINEERING   142 ( 12 )  2016.12  [Refereed]

    DOI

    Scopus

    25
    Citation
    (Scopus)

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

    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  [Refereed]

    DOI

    Scopus

    67
    Citation
    (Scopus)

  • Projection of coastal floods in 2050 Jakarta

    Hiroshi Takagi, Miguel Esteban, Takahito Mikami, Daisuke Fujii

    Urban Climate   17   135 - 145  2016.09  [Refereed]

    DOI

    Scopus

    107
    Citation
    (Scopus)

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

    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 )  2016.07  [Refereed]

    DOI

    Scopus

  • 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

    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 )  2016.07  [Refereed]

    DOI

    Scopus

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

    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 )  2016.03  [Refereed]

    Authorship：Lead author

    DOI

    Scopus

    26
    Citation
    (Scopus)

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

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

    COASTAL ENGINEERING JOURNAL   58 ( 1 )  2016.03  [Refereed]

    DOI

    Scopus

    29
    Citation
    (Scopus)

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

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

    COASTAL ENGINEERING   108   1 - 9  2016.02  [Refereed]

    DOI

    Scopus

    52
    Citation
    (Scopus)

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

    MORINAGA Takayuki, MIKAMI Takahito, SHIBAYAMA Tomoya

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

    　View Summary

    &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.

    DOI CiNii

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

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

    NATURAL HAZARDS   80 ( 1 ) 539 - 565  2016.01  [Refereed]

    DOI

    Scopus

    42
    Citation
    (Scopus)

  • Mangrove forest against dyke-break-induced tsunami on rapidly subsiding coasts

    Hiroshi Takagi, Takahito Mikami, Daisuke Fujii, Miguel Esteban, Shota Kurobe

    NATURAL HAZARDS AND EARTH SYSTEM SCIENCES   16 ( 7 ) 1629 - 1638  2016  [Refereed]

    DOI

    Scopus

    31
    Citation
    (Scopus)

  • Coastal disasters in Vietnam

    Hiroshi Takagi, Nguyen Danh Thao, Miguel Esteban, Takahito Mikami, Le Van Cong, Vu Thanh Ca

    Handbook of Coastal Disaster Mitigation for Engineers and Planners     235 - 255  2015.07

    DOI

    Scopus

    19
    Citation
    (Scopus)

  • Storm surge due to 2013 typhoon Yolanda (Haiyan) in Leyte Gulf, the Philippines

    Hiroshi Takagi, Mario De Leon, Miguel Esteban, Takahito Mikami, Ryota Nakamura

    Handbook of Coastal Disaster Mitigation for Engineers and Planners     133 - 144  2015.07

    DOI

    Scopus

    7
    Citation
    (Scopus)

  • 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  2015.07

    DOI

    Scopus

    2
    Citation
    (Scopus)

  • 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  2015.07

    DOI

    Scopus

    10
    Citation
    (Scopus)

  • 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  2015.07

    DOI

    Scopus

    12
    Citation
    (Scopus)

  • 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  2015.07

    DOI

    Scopus

    8
    Citation
    (Scopus)

  • 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  2015.07

    DOI

    Scopus

    12
    Citation
    (Scopus)

  • 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  2015.07

    DOI

    Scopus

    9
    Citation
    (Scopus)

  • Typhoon Haiyan 2013 Evacuation Preparations and Awareness

    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  2015.03  [Refereed]

    DOI

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

    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  [Refereed]

    DOI J-GLOBAL

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

    MATSUBA Shunya, MIKAMI Takahito, SHIBAYAMA Tomoya

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)   71 ( 2 ) I_871 - I_876  2015  [Refereed]

    　View Summary

    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.

    DOI CiNii

  • LABORATORY STUDY ON TSUNAMI REDUCTION EFFECT OF TEIZAN CANAL

    WATANABE Shun, MIKAMI Takahito, SHIBAYAMA Tomoya

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)   71 ( 2 ) I_301 - I_306  2015  [Refereed]

    　View Summary

    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 CiNii

  • The emergence of global tsunami awareness in Chile, Indonesia, Japan and Vietnam

    Esteban, M, Thao, N. D, Takagi, H, Tsimopoulou, V, Mikami, T, Yun, N. Y, Suppasri, A

    Handbook of coastal disaster mitigation engineers and planners     205 - 233  2015  [Refereed]

    DOI

    Scopus

    11
    Citation
    (Scopus)

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

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

    NATURAL HAZARDS   71 ( 1 ) 851 - 870  2014.03  [Refereed]

    Authorship：Lead author

    DOI

    Scopus

    21
    Citation
    (Scopus)

  • Stability of Breakwater Armor Units against Tsunami Attacks

    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  2014.03  [Refereed]

    DOI

    Scopus

    31
    Citation
    (Scopus)

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

    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  [Refereed]

    DOI

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

    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  [Refereed]

    　View Summary

    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 CiNii

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

    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  [Refereed]

    DOI

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

    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  [Refereed]

    DOI

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

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

    INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION   5   84 - 97  2013.09  [Refereed]

    DOI

    Scopus

    97
    Citation
    (Scopus)

  • Classification of Tsunami and Evacuation Areas

    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  2013.06  [Refereed]

    DOI

    Scopus

    78
    Citation
    (Scopus)

  • 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

    MIKAMI Takahito, SHIBAYAMA Tomoya, ESTEBAN Miguel

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

    　View Summary

    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.

    DOI CiNii

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

    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  [Refereed]

    　View Summary

    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 CiNii

  • Fluid Motion around Coastal Dyke due to Overflowing Tsunami

    MIKAMI Takahito, MATSUBA Shunya, SHIBAYAMA Tomoya

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

    DOI CiNii

  • Analysis of Tsunami Culture in Countries Affected by Recent Tsunamis

    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  [Refereed]

    DOI

  • 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  [Refereed]

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

    Takahito Mikami, Tomoya Shibayama, Miguel Esteban, Ryo Matsumaru

    COASTAL ENGINEERING JOURNAL   54 ( 1 ) 1250011  2012.03  [Refereed]

    DOI

    Scopus

    116
    Citation
    (Scopus)

  • ASSESSMENT OF THE COASTAL DISASTER RISKS IN SOUTHERN VIETNAM

    Takagi Hiroshi, Nguyen Danh Thao, Miguel Esteban, Tran Thu Tam, Hanne Louise Knaepen, Mikami Takahito

    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)   68 ( 2 ) I_888 - I_893  2012  [Refereed]

    　View Summary

    Vietnam has a long coastline that stretches from north to south and thus is a country highly susceptible to coastal disasters. However, the southern part of Vietnam has generally been perceived to be less vulnerable to typhoons or storm surges compared to the northern and central parts of the country. The authors tried to understand the actual vulnerability of this southern coastline to coastal disasters, in particular storm surge, through the field surveys and numerical simulations. Through the field survey it was evident that there are a number of settlements at risk, such as a number of houses standing on a severely eroded beach and a village located in a low-lying river bank. The interviews with local residents revealed that people living there were not concerned about typhoons, while a typhoon track analysis shows that a substantial number of typhoons have approached southern Vietnam in the past. The authors estimated that the highest water elevation due to storm surges in the past 6 decades was approximately one meter by performing the numerical simulation. It is feared that these vulnerable local communities could be devastated by a storm surge accompanied by strong waves if the past biggest class typhoon occurs.

    DOI CiNii

  • Numerical Analysis of Tsunami Propagating on Wide Reef Platform Using Turbulence Model

    三上 貴仁, 柴山 知也

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)   68 ( 2 ) I_76 - I_80  2012  [Refereed]

    DOI CiNii

  • Numerical analysis of tsunami propagation on wide reef platform

    Takahito Mikami, Tomoya Shibayama

    Proceedings of the Coastal Engineering Conference    2012

    DOI

    Scopus

    1
    Citation
    (Scopus)

  • Field Survey of the 2011 off the Pacific Coast of Tohoku Earthquake Tsunami Disaster to the South of Miyagi Prefecture

    SHIBAYAMA Tomoya, MATSUMARU Ryo, TAKAGI Hiroshi, ESTEBAN Miguel, MIKAMI Takahito

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)   67 ( 2 ) I_1301 - I_1305  2011  [Refereed]

    DOI

  • FIELD SURVEY OF TSUNAMI DISASTER IN CHILE 2010

    MIKAMI Takahito, SHIBAYAMA Tomoya, TAKEWAKA Satoshi, ESTEBAN Miguel, OHIRA Koichiro, ARANGUIZ Rafael, VILLAGRAN Mauricio, AYALA Alvaro

    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)   67 ( 2 ) I_529 - I_534  2011  [Refereed]

    DOI

  • Field Survey and Analysis of Tsunami Disaster in the Samoan Islands

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

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)   66 ( 1 ) 1376 - 1380  2010  [Refereed]

    　View Summary

    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 CiNii

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Books and Other Publications

  • Coastal Engineering

    ( Part： Joint author)

    Morikita Publishing  2021.05 ISBN: 9784627496613

  • Hydraulics

    ( Part： Joint author)

    Corona Publishing  2019.09 ISBN: 9784339052688

Research Projects

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

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research

    Project Year :

    2020.10
    -
    2026.03
     

  • -

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

    Project Year :

    2022.04
    -
    2025.03
     

    Takahito Mikami

  • Evaluation and Improvement of Regional Tsunami Evacuation Level

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)

    Project Year :

    2016.04
    -
    2018.03
     

    Takahito Mikami

    　View Summary

    The present research aims to analyze which types of evacuation triggers worked among coastal residents based on the published results of post field surveys conducted after recent tsunami events. First the actual evacuation triggers were classified into categories and then the main triggers in each area were identified. The results of this analysis show that the types of triggers that worked during these events depended on the levels of tsunami awareness in each area. These results clearly indicate that efforts to achieve and retain a high level of tsunami awareness are required in tsunami-prone coastal areas in order for residents to successfully evacuate.

  • A survey of coastal disaster changes in Asia and Africa

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research

    Project Year :

    2010.04
    -
    2015.03
     

    SHIBAYAMA Tomoya, MIKAMI Takahito

    　View Summary

    Field surveys of coastal disasters are performed for Chilean tsunami (2010), a tsunami in Mentawai islands in Indonesia (2010), a storm surge due to Hurricane Sandy (2012) in New York City in USA, and a storm surge due to Hurricane Haiyan (2013) in the Philippines. Based on the field survey results, basic mechanisms of disaster are analyzed. Recent changes of land use in the areas to be more complicated and dense, local effects of global climate change give important effects to increase of total losses.
    A new storm surge model consists of sub-models of local climate, ocean dynamics, and tidal motion is developed. The model gives good hind-casting results compared to the recent storm surge events including Sandy, Haiyan, Nargis, Sidr and Japanese storm surges. The model is applied to future predictions of storm surge under global warming in Indian Ocean and north part of Pacific Ocean. There are good possibility that the future storm surge will be bigger in these areas.

  • -

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Fellows

    Project Year :

    2013.04
    -
    2014.03
     

    Takahito Mikami

Misc

▼display all

 

Syllabus

▼display all

Teaching Experience

  • Civil and Urban Engineering Laboratory and Exercise (2)

    Tokyo City University  

    2022
    -
    Now
     

  • Hydraulics and Exercise (2)

    Tokyo City University  

    2021
    -
    Now
     

  • Water Environment and Disaster Prevention, Adv.

    Tokyo City University  

    2021
    -
    Now
     

  • Natural Disaster and Disaster Risk Reduction

    Toyo University  

    2018
    -
    Now
     

  • Hydraulics in Engineering, Adv.

    Tokyo City University  

    2017
    -
    Now
     

  • Vector Analysis

    Tokyo City University  

    2017
    -
    Now
     

  • Coastal and Harbor Engineering

    Tokyo City University  

    2017
    -
    Now
     

  • Disaster Prevention Engineering

    Tokyo City University  

    2017
    -
    Now
     

  • Introduction of Environmental Science

    Tokyo City University  

    2018
    -
    2022
     

  • Career Design (2)

    Tokyo City University  

    2021
    -
    　
     

  • Environmental Hydraulics, Adv.

    Tokyo City University  

    2017
    -
    2020
     

  • Hydraulics (2)

    Tokyo City University  

    2017
    -
    2020
     

  • Civil and Urban Engineering Laboratory and Exercise (1)

    Tokyo City University  

    2017
    -
    2020
     

▼display all

 

Sub-affiliation

  • Affiliated organization   Global Education Center

  • Faculty of Science and Engineering   Graduate School of Creative Science and Engineering

Research Institute

  • 2024
    -
    2026

    Waseda Research Institute for Science and Engineering   Concurrent Researcher

Internal Special Research Projects

  • PIVを用いた平面津波水槽での流速場計測に関する基礎的検討

    2015  

    　View Summary

    　津波のように沿岸方向にも岸沖方向にも広範囲にわたる現象を実験によって把握するためには、波高計や流速計を用いた点での計測ではなく、面で物理量を把握することも重要となる。そこで本研究では、津波を対象とした水理実験において、PIV (Particle Image Velocimetry) の手法を用いて面的な流速場の計測を行い、その有効性を検討した。特に、東日本大震災の際に仙台平野沿岸で見られた、運河（貞山運河）を越えていく津波の流れを対象として実験を行い、運河の有する津波減災効果を分析した。二次元水路内で運河を越流する津波を再現し、運河周辺の流れの流速場を計測することができた。今後は、運河周囲の地形をより現実のものに近づけて実験を継続していく予定である。

  • 海岸構造物や沿岸環境が津波の浸水過程に及ぼす影響の解明

    2015  

    　View Summary

    　東日本大震災では多くの海岸堤防が越流する津波により甚大な被害を受けており、越流する津波に対しても粘り強く効果を発揮する海岸堤防の整備が求められている。海岸堤防を越流する津波の挙動やそれに対する海岸堤防の応答については研究が進められているが、その際に海岸堤防周囲の環境を考慮したものはまだ少ない。そこで本研究では、周囲の環境のうち、海岸堤防の背後に位置する防潮林と海中に位置する離岸堤を考慮して、津波襲来時に海岸堤防周辺で生じる流体運動の分析を行った。東日本大震災における実例の分析と水理実験を行うことにより、海岸堤防への影響を低減する防潮林と離岸堤の条件について基礎的な知見を得ることができた。

  • 2009～2013年に生じた津波・高潮災害から得られた知見の収集・整理と分析

    2014  

    　View Summary

    　本研究では、今後の沿岸災害の減災策を考えるにあたって有用な知見を提示することを目的として、2009～2013年の5年間に世界各地で生じた津波･高潮災害に関する情報の収集および整理を行った。2009年サモア諸島津波、2010年インドネシア・メンタワイ諸島津波については、避難につながる行動のトリガーや、避難経路の整備という観点から比較し、離島での被害軽減に重要な点を指摘した。2013年台風ヨランダによるフィリピンでの高潮災害については、近年に発生した他の高潮災害とは異なる特徴を有しており、台風の経路と沿岸地形に伴って変化する高潮のさまざまな特徴を把握しておくことが必要であることがわかった。