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Developing automatic detection and tsunami source estimation methods for non-seismic tsunamis using offshore tsunami observation records

Research Project

Project/Area Number 18K04674
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 InstitutionNational Research Institute for Earth Science and Disaster Prevention

Principal Investigator

CHIKASADA Naotaka  国立研究開発法人防災科学技術研究所, 地震津波防災研究部門, 主任研究員 (90318197)

Co-Investigator(Kenkyū-buntansha) 対馬 弘晃  気象庁気象研究所, 地震津波研究部, 主任研究官 (00589864)
Project Period (FY) 2018-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords津波 / 非地震性津波 / 沖合津波観測 / 津波即時予測 / 海底津波観測網 / JAGURS / 海底圧力計 / 隕石津波 / 即時推定
Outline of Final Research Achievements

In this research project, we have developed automatic detection and tsunami source estimation methods not only for seismic tsunami, but also non-seismic tsunamis caused by submarine landslide, submarine volcanic eruption, caldera activity etc. using tsunami observation records obtained from widely and densely distributed offshore ocean bottom pressure gauges network. The most important feature of these methods is that these are able to detect and estimate source distribution of tsunamis without results of seismic observation records such as epicenter and fault models, but only using ocean bottom pressure observation records to detect and predict tsunamis.

Academic Significance and Societal Importance of the Research Achievements

多くの津波は海域での巨大地震によって生じるが,一部は地震による海底地殻変動では説明が出来ない津波があることが知られている.本研究期間中にも,2018年インドネシアのパル湾や,能登半島での地震では,地震の規模に比して巨大な津波による被害や,想定される津波よりも早い津波の到達が確認されており,海底地すべりが原因と推定されている.また,伊豆小笠原海域での海底カルデラ活動や,2022年1月のトンガ諸島付近の大規模噴火によって生じた気圧波による津波など,地震を原因と考えるだけでは津波予測が困難となる現象が確認されている.本研究成果は,これらの非地震性津波に備え,その警報・注意報の実現に資するものである.

Report

(7 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (31 results)

All 2024 2023 2022 2021 2020 2019 2018

All Journal Article (4 results) (of which Peer Reviewed: 3 results) Presentation (27 results) (of which Int'l Joint Research: 11 results)

  • [Journal Article] Consideration of meteotsunami real-time forecasting method using high quality atmospheric and ocean bottom pressure records2023

    • Author(s)
      Naotaka Yamamoto Chikasada
    • Journal Title

      2023 IEEE Underwater Technology (UT)

      Volume: 2023 Pages: 1-4

    • Related Report
      2022 Research-status Report
  • [Journal Article] Ocean-Wave Gradiometry: Visualizing and Extracting Propagation Features of the 15 January 2022 Tsunami Wavefield with Dense Ocean-Bottom Pressure Gauge Arrays2022

    • Author(s)
      Ogiso Masashi、Tsushima Hiroaki
    • Journal Title

      Seismological Research Letters

      Volume: 94 Issue: 2A Pages: 626-636

    • DOI

      10.1785/0220220151

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] TSUNAMI ARRIVAL TIME CALCULATION IN CONSTRUCTION OF TSUNAMI SCENARIO BANK AND INFLUENCED BY TSUNAMI INUNDATION CALCULATION WITH DIFFERENCES OF PROTECTIVE FACILITY2019

    • Author(s)
      近貞 直孝 , 根本 信 , 髙山 淳平 , 鈴木 亘 , 三好 崇之 , 青井 真
    • Journal Title

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

      Volume: 75 Issue: 2 Pages: I_379-I_384

    • DOI

      10.2208/kaigan.75.I_379

    • NAID

      130007730253

    • ISSN
      1883-8944, 1884-2399
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Short-Wavelength Tsunami Observation Using Deep Ocean Bottom Pressure Gauges2019

    • Author(s)
      Naotaka Yamamoto Chikasada
    • Journal Title

      The 29th International Ocean and Polar Engineering Conference

      Volume: 2019(ISOPE-I-19-707) Pages: 3154-3159

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 非地震性津波の数値計算モデル開発の取り組み2024

    • Author(s)
      近貞直孝
    • Organizer
      研究集会「海洋・海岸等における波動モデルの研究」
    • Related Report
      2023 Annual Research Report
  • [Presentation] 海洋への隕石衝突 による影響調査2024

    • Author(s)
      近貞直孝
    • Organizer
      2023年度プラネタリーディフェンス・シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] Developing 2D Numerical Modeling for Meteorite Impact Tsunamis2023

    • Author(s)
      Naotaka CHIKASADA
    • Organizer
      APRIM2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 隕石津波の即時予測とハザード評価に向けた定量評価手法の開発2023

    • Author(s)
      近貞直孝
    • Organizer
      日本地球惑星科学連合2023年大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 海洋への隕石衝突による津波の即時予測手法の開発2022

    • Author(s)
      近貞(山本)直孝
    • Organizer
      第66回宇宙科学技術連合講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] 2D Numerical Modeling Toward Real-time Forecast of Meteorite Impact Tsunami2022

    • Author(s)
      Naotaka YAMAMOTO CHIKASADA
    • Organizer
      AOGS 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Non-seismic Tsunami Real-time Forecasting Under Data Assimilation Approach - Case Study for Hunga Tonga - Hunga Ha’apai Volcanic Eruption Tsunami Using S-net Data -2022

    • Author(s)
      Naotaka YAMAMOTO CHIKASADA, Wataru SUZUKI
    • Organizer
      AOGS 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Extracting Sea Surface Changes Using High Quality Atmospheric and Ocean Bottom Pressure Data Recorded After the Hunga Tonga - Hunga Ha’apai Volcano Eruption2022

    • Author(s)
      Naotaka YAMAMOTO CHIKASADA
    • Organizer
      AOGS 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 沖合津波波形の常時解析に基づく津波の自動検知手法の検討2021

    • Author(s)
      対馬弘晃,近貞(山本)直孝
    • Organizer
      日本地球惑星科学連合2021年大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Development of quantitative evaluation method for real-time forecast of meteorite impact tsunami2021

    • Author(s)
      Naotaka Yamamoto Chikasada,Toshitaka Baba
    • Organizer
      30th International Tsunami Symposium
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 海洋への隕石衝突による津波の定量評価に向けて2021

    • Author(s)
      近貞(山本)直孝
    • Organizer
      2021年度プラネタリーディフェンス・シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] OpenTSUNAMI-杞憂プロジェクト始動2021

    • Author(s)
      近貞直孝
    • Organizer
      防災科研成果発表会
    • Related Report
      2020 Research-status Report
  • [Presentation] OpenTSUNAMIプロジェクト始動2020

    • Author(s)
      近貞直孝
    • Organizer
      第10回巨大津波災害に関する合同研究集会
    • Related Report
      2020 Research-status Report
  • [Presentation] OpenTSUNAMI(杞憂プロジェクト)構想2019

    • Author(s)
      近貞直孝
    • Organizer
      第9回巨大津波災害に関する合同研究集会
    • Related Report
      2019 Research-status Report
  • [Presentation] Developing a numerical simulation model for a meteorite impact tsunami2019

    • Author(s)
      Naotaka Yamamoto Chikasada, Toshitaka Baba, Tetsuharu Fuse
    • Organizer
      MODSIM 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Real-time Tsunami Forecasting for the Outer-rise Earthquakes Based on Deep Ocean Bottom Pressure Data2019

    • Author(s)
      Naotaka Yamamoto Chikasada, Toshitaka Baba
    • Organizer
      AOGS 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Special Treatments for the Outer-rise Earthquake Tsunamis in the Near-field Tsunami Forecasting using the Real-time Deep Ocean Bottom Pressure Data2019

    • Author(s)
      Naotaka Chikasada, Toshitaka Baba
    • Organizer
      The 27th IUGG General Assembly
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Short-wavelength Tsunami Observation Using Deep Ocean Bottom Pressure Gauges2019

    • Author(s)
      Naotaka Yamamoto Chikasada
    • Organizer
      The Twenty-ninth (2019) International Ocean and Polar Engineering Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] アウターライズ地震による津波の即時予測手法の再検討2019

    • Author(s)
      近貞直孝, 馬場俊孝
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 海洋への隕石落下による津波の即時予測手法の開発2019

    • Author(s)
      近貞直孝, 馬場俊孝, 布施哲治
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 海洋への隕石落下による津波の定量評価手法の開発2019

    • Author(s)
      近貞直孝, 布施哲治, 馬場俊孝
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Multi-index法を用いたリアルタイム波形比較手法の検討2018

    • Author(s)
      近貞直孝
    • Organizer
      日本地球惑星科学連合2018年度連合大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 短波長津波が生じた場合の海底水圧観測への影響2018

    • Author(s)
      近貞直孝・久保田達矢・中村武史・馬場俊孝・齊藤竜彦・鈴木亘
    • Organizer
      日本地震学会2018年度秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Appropriate Evaluation of Deep Ocean Bottom Pressure Changes Caused by Short Wavelength Tsunami2018

    • Author(s)
      N. Chikasada, T. Kubota, T. Nakamura, T. Baba, T. Saito, and W. Suzuki
    • Organizer
      AGU 2018 Fall Meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Observation of Ocean Bottom Pressure Changes Caused by Short Wavelength Ocean Wave2018

    • Author(s)
      N. Chikasada, T. Kubota, T. Nakamura, T. Baba, T. Saito, and W. Suzuki
    • Organizer
      10th ACES International Workshop
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 隕石津波の定量評価に向けて2018

    • Author(s)
      近貞直孝
    • Organizer
      第11回スペースガード研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] 海洋への隕石落下による津波の定量的な評価に向けて2018

    • Author(s)
      近貞直孝・布施哲治
    • Organizer
      日本惑星科学会2018年秋季講演会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2025-01-30  

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