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Measuring mega-tsunami current using AIS data of offshore navigating ships, and its application to real-time tsunami forecast

Research Project

Project/Area Number 18K04654
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 25030:Disaster prevention engineering-related
Research InstitutionTokyo University of Marine Science and Technology

Principal Investigator

Inazu Daisuke  東京海洋大学, 学術研究院, 准教授 (30462170)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords自動船舶識別装置(AIS) / 航行船舶 / 津波 / 流れ / 即時予測 / AIS / 巨大津波 / リアルタイム予測
Outline of Final Research Achievements

This project showed that shipborne AIS data collected according to an IMO regulation can be utilized as offshore tsunami current meters from multiple unspecified vessels. We investigated an equation of ship motion, verified the ship response to tsunami current, and estimated tsunami current from the ship response. Extracted tsunami current information were valuable to successfully estimate earthquake source of the tsunami, and to forecast tsunami heights at coasts.

Academic Significance and Societal Importance of the Research Achievements

沖合での津波計測は、沿岸に到達する前の情報を含むため、津波の予測の観点で重要性が高い。沖合の津波モニタリングの方法として、GPSブイや海底圧力観測に基づく観測網が、日米を中心に展開されてきている。本研究は、不特定多数の船舶に基づくAISデータが、現状の枠組みにおいてそのまま沖合の津波センサーとして使い得ることを示した。学術的な意義として、運動方程式に基づく検討により、津波流れに対する船体の応答様式を評価でき、逆に津波流れも精密に評価することができた。社会的な意義として、現状のAISがそのまま使えることで、津波予測システムの構築に利用するための追加コストがほとんど必要ない点は特筆すべきである。

Report

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

    (10 results)

All 2021 2020 2019 2018

All Journal Article (5 results) (of which Peer Reviewed: 4 results,  Open Access: 5 results) Presentation (5 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] Improving detectability of seafloor deformation from bottom pressure observations using numerical ocean models2021

    • Author(s)
      Dobashi, Y., and D. Inazu
    • Journal Title

      Frontiers in Earth Science

      Volume: 8 Pages: 598270-598270

    • DOI

      10.3389/feart.2020.598270

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] An allocating method of tsunami evacuation routes and refuges for minimizing expected casualties2020

    • Author(s)
      Kitamura Fukutaro、Inazu Daisuke、Ikeya Tsuyoshi、Okayasu Akio
    • Journal Title

      International Journal of Disaster Risk Reduction

      Volume: 45 Pages: 101519-101519

    • DOI

      10.1016/j.ijdrr.2020.101519

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Extracting clearer tsunami currents from shipborne Automatic Identification System data using ship yaw and equation of ship response2020

    • Author(s)
      D. Inazu, T. Ikeya, T. Iseki, T. Waseda
    • Journal Title

      Earth, Planets and Space

      Volume: 72 Issue: 1 Pages: 41-41

    • DOI

      10.1186/s40623-020-01165-7

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Forecasting tsunamis using ship navigation records2019

    • Author(s)
      D. Inazu
    • Journal Title

      Research OUTREACH

      Volume: 106 Pages: 22-25

    • Related Report
      2018 Research-status Report
    • Open Access
  • [Journal Article] Measuring offshore tsunami currents using ship navigation records2018

    • Author(s)
      Inazu Daisuke、Ikeya Tsuyoshi、Waseda Takuji、Hibiya Toshiyuki、Shigihara Yoshinori
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 5 Issue: 1 Pages: 11-11

    • DOI

      10.1186/s40645-018-0194-5

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Estimating tsunami currents from shipborne Automatic Identification System data2020

    • Author(s)
      Inazu, D., T. Ikeya, T. Iseki, and T. Waseda
    • Organizer
      JpGU-AGU Joint Meeting 2020: Virtual Meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 船舶の航海データ(AIS)で津波の流速を計測することについて2019

    • Author(s)
      稲津大祐・池谷毅・井関俊夫・早稲田卓爾
    • Organizer
      日本測地学会第132回講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Offshore tsunami current meters using navigation records (AIS) from multiple unspecified ships2019

    • Author(s)
      D. Inazu, T. Ikeya, T. Iseki, and T. Waseda
    • Organizer
      AGU Fall Meeting 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 船舶航行データから見る津波の水平流速2018

    • Author(s)
      稲津大祐・池谷毅・早稲田卓爾・日比谷紀之・鴫原良典
    • Organizer
      日本地球惑星科学連合大会2018年大会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Offshore tsunami currents found in navigating ship records2018

    • Author(s)
      D. Inazu, T. Ikeya, T. Waseda, T. Hibiya, Y. Shigihara
    • Organizer
      10th ACES International Workshop
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2022-01-27  

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