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Estimation of Historical Typhoons from the Distribution of Large Coastal Boulders in Subtropical Coastal Areas

Research Project

Project/Area Number 18K18878
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 22:Civil engineering and related fields
Research InstitutionKyoto University

Principal Investigator

Mori Nobuhito  京都大学, 防災研究所, 教授 (90371476)

Co-Investigator(Kenkyū-buntansha) 渡部 靖憲  北海道大学, 工学研究院, 教授 (20292055)
中條 壮大  大阪市立大学, 大学院工学研究科, 准教授 (20590871)
安田 誠宏  関西大学, 環境都市工学部, 准教授 (60378916)
Project Period (FY) 2018-06-29 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords巨礫 / 波浪 / 台風 / 逆推定
Outline of Final Research Achievements

In recent years, there are many researches on the distribution of large coastal boulders that have moved from the sea and run-up on land. We attempted to estimate the wave forces and related typhoon intensity from the observed distribution of typhoon boulders. In order to estimate the boulder movement by numerical models, we conducted hydraulic model experiments of boulder movement for solitary waves simulating tsunami and irregular waves simulating typhoon waves. In the case of solitary waves, the distance traveled by boulders was larger when the horizontal bed was dried out, and in the case of irregular waves, when the bed was submerged. In addition, a numerical model of the boulder movement phenomenon was developed, and its range of application and model optimization were carried out using the results of hydraulic experiments. Good results were obtained for the distance of boulder movement by solitary wave and irregular wave.

Academic Significance and Societal Importance of the Research Achievements

沿岸巨礫の研究は,沖(古台風)から陸上(観測結果)までの巨礫移動過程の時間軸をいかに逆に戻ることができるのかという点に学術的挑戦性がある.本研究で開発された巨礫分布を説明可能な巨礫移動の数値モデルをもとに,数百年スケールの過去巨大津波および巨大台風強度の両者を推定な道筋が得られた.これを発展させることにより,古台風災害評価学という新しい分野の開拓につながることが期待される.

Report

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

    (11 results)

All 2020 2019 2018 Other

All Int'l Joint Research (2 results) Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 2 results)

  • [Int'l Joint Research] ノートルダム大学(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] ノートルダム大学(米国)

    • Related Report
      2018 Research-status Report
  • [Journal Article] A NUMERICAL MODEL FOR THE TRANSPORT OF COASTAL BOULDERS BY TSUNAMI AND HIGH WAVES2020

    • Author(s)
      KISO Satoshi、YASUDA Tomohiro、KENNEDY Andrew、MORI Nobuhito
    • Journal Title

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

      Volume: 76 Issue: 2 Pages: I_415-I_420

    • DOI

      10.2208/kaigan.76.2_I_415

    • NAID

      130007935919

    • ISSN
      1883-8944, 1884-2399
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Evolution of High-Order Weakly Nonlinear Wave with Bottom Topography Change2020

    • Author(s)
      LYU Zuorui、MORI Nobuhito、KASHIMA Hiroaki
    • Journal Title

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

      Volume: 76 Issue: 2 Pages: I_1-I_6

    • DOI

      10.2208/kaigan.76.2_I_1

    • NAID

      130007935738

    • ISSN
      1883-8944, 1884-2399
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of Global Stochastic Tropical Cyclone Model by using large ensemble GCM simulation data(d4PDF)2019

    • Author(s)
      梅田尋慈, 中條壮大, 森 信人
    • Journal Title

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

      Volume: 75 Issue: 2 Pages: I_1195-I_1200

    • DOI

      10.2208/kaigan.75.I_1195

    • NAID

      130007730131

    • ISSN
      1883-8944, 1884-2399
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 津波・高波による巨礫移動特性の実験的検討2018

    • Author(s)
      木曽哲志, 安田誠宏, 森 信人
    • Journal Title

      土木学会論文集 B2 (海岸工学)

      Volume: 74

    • NAID

      130007504030

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 津波・高波による巨礫移動現象の数値モデルを用いた検討2020

    • Author(s)
      木曽 哲志, 安田 誠宏, Andrew KENNEDY, 森 信人
    • Organizer
      海岸工学講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Evolution of High-Order Weakly Nonlinear Wave with Bottom Topography Change2020

    • Author(s)
      Zuorui LYU, Nobuhito MORI, Hiroaki KASHIMA
    • Organizer
      海岸工学講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Projection of maximum potential intensity of storm surge around Japan in the future climate2019

    • Author(s)
      Mori, N., N. Ariyoshi
    • Organizer
      AOGS2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Expermental study on transport characteristics of coastal boulders by tsunami and high waves2018

    • Author(s)
      Kiso, S., T. Yasuda, N. Mori and A. Kennedy
    • Organizer
      The 36th International Conference on Coastal Engineering, ASCE
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 津波・高波による巨礫移動特性の実験的検討2018

    • Author(s)
      木曽哲志・安田誠宏・森 信人・Andrew Kennedy (2018)
    • Organizer
      土木学会関西支部
    • Related Report
      2018 Research-status Report

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Published: 2018-07-25   Modified: 2022-01-27  

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