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Development of an efficient model of coastal inundation based on reduction of coastal topography

Research Project

Project/Area Number 18H01541
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 22040:Hydroengineering-related
Research InstitutionThe University of Tokyo

Principal Investigator

Takenori Shimozono  東京大学, 大学院工学系研究科(工学部), 准教授 (70452042)

Co-Investigator(Kenkyū-buntansha) 山中 悠資  東京大学, 大学院工学系研究科(工学部), 助教 (60815108)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥15,860,000 (Direct Cost: ¥12,200,000、Indirect Cost: ¥3,660,000)
Fiscal Year 2020: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Keywords浸水 / 予測 / モデル / 津波 / 高潮 / 浸水予測 / 氾濫 / 堤防
Outline of Final Research Achievements

The study develops a new model framework for coastal flooding by tsunamis and storm surges, which enables an efficient hazard assessment of numerous small coastal communities along a long stretch of coastline. The model represents coastal low-lying areas as networks of their small subdomains and solve transfers of mass and momentum among the subdomains based on the linear shallow water equations. It is capable of simulating coastal flood processes with a smaller number of computational elements compared to conventional grid-based models. Model applications to past flood events confirmed that it achieves a good balance of accuracy and computational cost.

Academic Significance and Societal Importance of the Research Achievements

我が国では長い海岸線に点在する大小沿岸低地が津波や高潮の脅威に晒されており,人口減少による急速な社会変化も踏まえて広域レベルで沿岸防護のあり方を検討しなければならない.そのためには広域的なハザード評価をもとにした俯瞰的・相対的な議論を支える技術が重要となるが,既往の浸水予測手法の高い計算コストが大きな足枷となっている.本研究で開発した計算精度とコストのバランスした新しいモデルは,広域の海岸低地群を対象に一括した浸水予測を可能にし,様々なシナリオのもとで効率的なハザード評価を実現するものである.

Report

(4 results)
  • 2021 Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (10 results)

All 2022 2021 2020 2019 2018

All Journal Article (8 results) (of which Peer Reviewed: 8 results,  Open Access: 3 results) Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Water surge impingement onto a vertical wall: Laboratory experiments and stochastic analysis on impact pressure2022

    • Author(s)
      Xie, W., Shimozono, T.
    • Journal Title

      Ocean Engineering

      Volume: 248 Pages: 110422-110422

    • DOI

      10.1016/j.oceaneng.2021.110422

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Tsunami inundation characteristics along the Japan Sea coastline: effect of dunes, breakwaters, and rivers.2022

    • Author(s)
      Yamanaka, Y., Shimozono, T.
    • Journal Title

      Earth Planets Space

      Volume: 74 Issue: 1 Pages: 1-19

    • DOI

      10.1186/s40623-022-01579-5

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Rapid assessment of tsunami source impacts on low-lying coastal areas using offshore wave superposition and static sweep of onshore terrain2021

    • Author(s)
      Yamanaka, Y., Shimozono, T.
    • Journal Title

      Coastal Engineering Journal

      Volume: in print Issue: 2 Pages: 229-245

    • DOI

      10.1080/21664250.2021.2005364

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Tsunami propagation kernel and its applications2021

    • Author(s)
      Shimozono, T.
    • Journal Title

      Natural Hazards and Earth System Sciences

      Volume: 21 Issue: 7 Pages: 2093-2108

    • DOI

      10.5194/nhess-21-2093-2021

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A STATISTICAL STUDY OF THE DAMAGE CAUSES OF COASTAL FORESTS IN THE 2011 GREAT EAST JAPAN EARTHQUAKE TSUNAMI2021

    • Author(s)
      林 隼佑, 下園 武範
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

      Volume: 77 Issue: 2 Pages: I_907-I_912

    • DOI

      10.2208/kaigan.77.2_I_907

    • NAID

      130008113423

    • ISSN
      1883-8944, 1884-2399
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Kernel representation of long-wave dynamics on a uniform slope2020

    • Author(s)
      Shimozono, T.
    • Journal Title

      Proceedings of Royal Society A

      Volume: 476 Issue: 2241 Pages: 20200333-20200333

    • DOI

      10.1098/rspa.2020.0333

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Coastal impacts of super typhoon Hagibis on Greater Tokyo and Shizuoka areas, Japan2020

    • Author(s)
      Shimozono Takenori、Tajima Yoshimitsu、Kumagai Kenzou、Arikawa Taro、Oda Yukinobu、Shigihara Yoshinori、Mori Nobuhito、Suzuki Takayuki
    • Journal Title

      Coastal Engineering Journal

      Volume: - Issue: 2 Pages: 1-17

    • DOI

      10.1080/21664250.2020.1744212

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Frequency-dependent amplification of the Sanriku tsunamis in Ryori Bay2019

    • Author(s)
      Yamanaka, Yusuke., Miyuki Nakamura
    • Journal Title

      Earth, Planets and Space

      Volume: 72 Issue: 1 Pages: 6-6

    • DOI

      10.1186/s40623-019-1128-1

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] 綾里湾における三陸沖地震津波の沿岸挙動に関する研究2019

    • Author(s)
      中村みゆき, 山中悠資
    • Organizer
      第66回海岸工学講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Long wave propagation in convergent bays2018

    • Author(s)
      Takenori Shimozono
    • Organizer
      South China Sea Tsunami Workshop
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2023-01-30  

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