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Virtual Tsunami Observation Experiments in Indonesia - A Breakthrough in Ocean Radar Tsunami Disaster Prevention Application Technology

Research Project

Project/Area Number 20KK0093
Research Category

Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

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

Principal Investigator

Hinata Hirofumi  愛媛大学, 理工学研究科(工学系), 教授 (70272680)

Co-Investigator(Kenkyū-buntansha) 藤 良太郎  愛媛大学, 防災情報研究センター, 特定研究員 (00856883)
藤井 智史  琉球大学, 工学部, 客員研究員 (30359004)
片岡 智哉  愛媛大学, 理工学研究科(工学系), 准教授 (70553767)
奥村 与志弘  関西大学, 社会安全学部, 教授 (80514124)
Project Period (FY) 2020-10-27 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000)
Fiscal Year 2023: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2021: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
KeywordsHFレーダー / 津波 / 波浪 / 住民避難 / 海洋レーダー / データ同化 / 津波避難 / 波浪推算 / 津波検知 / 津波避難モデル / 海洋レーダ / ジャワ島 / 避難モデル / 仮想津波観測実験 / インドネシア
Outline of Research at the Start

海洋レーダは,陸棚縁から港湾域まで津波をシームレスに計測する能力を有する.しかしながら,津波検知性能は背景ノイズなど電波環境に依存するため,その評価には1年程度のレーダ観測が必要であった.本研究では,レーダを設置せずに電波環境計測と津波シミュレーションのみから津波検知性能を評価するモデルを,ディープラーニングを使って開発する.さらに,レーダ津波検知性能向上のためのノイズフィルとレーダによる津波情報を活用した住民避難モデルを開発する.以上を日本とは電波環境,人間行動特性の大きく異なるインドネシアで行い,海洋レーダの津波防災活用範囲を格段に広げる技術を開発する.

Outline of Final Research Achievements

A tsunami data assimilation method, particularly a method for selecting observation points and a method that accounts for the beam angle dependence of observation error, has been developed to enhance the tsunami prediction performance. Signal processing techniques on hardware and software have been studied in consideration of noise and interference conditions in received signals using domestic ocean radars. The effects of salinity reduction due to river water inflow on wave measurements and appropriate quality control criteria for estimating wave spectra have been discussed using ocean radars in Ise Bay. A novel deep learning model for estimating wave spectra has been also examined. A survey on tsunami evacuation awareness among residents in the southern coastal area of Java Island, and a survey and video recordings of tsunami evacuation behavior among the residents affected by the 2018 Palu tsunami have been analyzed.

Academic Significance and Societal Importance of the Research Achievements

学術的意義:海洋レーダで計測された流速の誤差分布やその時間変動について,他測器によるデータとの比較(実施が非常に困難)ではなく,EOF解析とSelection Ruleを適用することで,把握できることを示せた.低塩分海域におけるレーダを用いた波浪計測方法について方向性を示せた.文化や行動規範の異なる2カ国で津波避難行動について検討することによって,津波避難のトリガーや今後の展開についてより深い理解が得られた.
社会的意義:ここで得られた知見や技術は,現在,民間企業が日本沿岸全域に展開を試みている海洋レーダに適用可能であり,今後,よりきめ細かな津波や波浪情報の提供につながることが期待される.

Report

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

    (30 results)

All 2024 2023 2022 2021 2020

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 3 results) Presentation (24 results) (of which Int'l Joint Research: 6 results)

  • [Journal Article] 避難開始における論理的判断と直感的判断の関係に注目した災害体験を伝える文書の分析2024

    • Author(s)
      高橋佑介,奥村与志弘
    • Journal Title

      土木学会論文集

      Volume: 80

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Application of Stress Parameter from Liquefaction Analysis on the Landslide Induced Tsunami Simulation: A Case Study of the 2018 Palu Tsunami2023

    • Author(s)
      Sujatmiko Karina Aprilia、Ichii Koji、Murata Soichiro、Mulia Iyan Eka
    • Journal Title

      Journal of Disaster Research

      Volume: 18 Issue: 3 Pages: 199-208

    • DOI

      10.20965/jdr.2023.p0199

    • ISSN
      1881-2473, 1883-8030
    • Year and Date
      2023-04-01
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Applicability of ocean wave measurements based on high-frequency radar systems in an estuary region2023

    • Author(s)
      Kataoka Tomoya,Fujiki Takashi
    • Journal Title

      Coastal Engineering Journal

      Volume: 0 Issue: 1 Pages: 1-16

    • DOI

      10.1080/21664250.2023.2275469

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Estimating Impact of the Reality-of-Evacuation-Start (RES) Sources in Indonesia2022

    • Author(s)
      SUJATMIKO Karina A.、OKUMURA Yoshihiro、OHTANI Jo
    • Journal Title

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

      Volume: 78 Issue: 2 Pages: I_307-I_312

    • DOI

      10.2208/kaigan.78.2_I_307

    • ISSN
      1883-8944, 1884-2399
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Analysis of Tsunami Evacuation Triggers in Indonesia2021

    • Author(s)
      Karina A. SUJATMIKO and Yoshihiro OKUMURA
    • Journal Title

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

      Volume: 77 Issue: 2 Pages: I_1045-I_1050

    • DOI

      10.2208/kaigan.77.2_I_1045

    • NAID

      130008113260

    • ISSN
      1883-8944, 1884-2399
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Numerical Analysis of Evacuation Start in Pangandaran2021

    • Author(s)
      Karina Aprilia Sujatmiko, Yoshihiro Okumura
    • Journal Title

      IOP Conf. Ser.: Earth Environ. Sci.

      Volume: 925 Issue: 1 Pages: 012044-012044

    • DOI

      10.1088/1755-1315/925/1/012044

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Field Survey on Factors Affecting the Initiation of Tsunami Evacuation in Yogyakarta, Indonesia2024

    • Author(s)
      K. Sujatmiko, Y. Okumura, R. Abdulharis, A. Handayani
    • Organizer
      the 18th World Conference on Earthquake Engineering
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 避難開始の論理的判断と直感的判断の違いを考慮した避難行動開始のタイミングに関する一考察2024

    • Author(s)
      高橋佑介,奥村与志弘
    • Organizer
      東日本大震災・原子力災害学術研究集会予稿集
    • Related Report
      2023 Annual Research Report
  • [Presentation] 津波避難の判断基準に関する一考察:意識調査と実災害の比較2024

    • Author(s)
      久世 真侑子,奥村与志弘
    • Organizer
      東日本大震災・原子力災害学術研究集会予稿集
    • Related Report
      2023 Annual Research Report
  • [Presentation] Tsunami Data Assimilation of High-Frequency Radar-Derived Surface Currents: Accounting for Measurement Error Distribution2024

    • Author(s)
      Muhammad Irham Sahana, Ryotaro Fuji, Tomoyuki Takahashi, Hirofumi Hinata
    • Organizer
      Japan Geoscience Union Meeting 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 汽水域における短波海洋レーダを用いた波浪計測の適用性2023

    • Author(s)
      片岡智哉,藤木峻
    • Organizer
      第30回海洋工学シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] 深層学習モデルを用いた海洋レーダによる風・波浪 同時観測の試み2023

    • Author(s)
      三宅 智大,片岡 智哉,田村 仁
    • Organizer
      九州大学応用力学研究所研究集会「海洋レーダを用いた海況監視システムの開発と応用」
    • Related Report
      2023 Annual Research Report
  • [Presentation] 海洋レーダによる海象観測と海洋監視の実験報告2023

    • Author(s)
      亀田洋志,高橋龍平,今津智成,片岡智哉,藤井智史
    • Organizer
      九州大学応用力学研究所研究集会「海洋レーダを用いた海況監視システムの開発と応用」
    • Related Report
      2023 Annual Research Report
  • [Presentation] 13.5MHz海洋レーダによる波浪観測精度の向上策の検討2023

    • Author(s)
      林正太,藤井智史,長名保範,春日井康夫,齊藤創太,金津伸好,永松宏
    • Organizer
      九州大学応用力学研究所研究集会「海洋レーダを用いた海況監視システムの開発と応用」
    • Related Report
      2023 Annual Research Report
  • [Presentation] 避難開始における論理的判断と直感的判断の関係に関する一考察2023

    • Author(s)
      高橋佑介,奥村与志弘
    • Organizer
      第43回地震工学研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 訓練,意向調査,実災害の比較による津波避難開始行動分析2023

    • Author(s)
      山本桃華,奥村与志弘
    • Organizer
      第43回地震工学研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 住民の参集状況が避難開始に及ぼす影響2023

    • Author(s)
      高井環,奥村与志弘
    • Organizer
      第43回地震工学研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 津波避難トリガーにみる日本人とインドネシア人の相違点2023

    • Author(s)
      山科華菜,奥村与志弘,Karina A. SUJATMIKO
    • Organizer
      第43回地震工学研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Estimating Impact of the Reality-of-Evacuation-Start (RES) Sources in Indonesia2022

    • Author(s)
      Karina A. SUJATMIKO,
    • Organizer
      海岸工学講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Tsunami forecast performance on the southern coast of Java: The consideration of angle between the bathymetry contour line and HF radar beam direction2022

    • Author(s)
      Muhammad Irham Sahana, Ryotaro Fuji, Hirofumi Hinata
    • Organizer
      Ocean Science Meeting 2022
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 海面散乱波ドップラースペクトルと波浪スペクトルの関係〜インドネシアレーダの取得データを例に〜2022

    • Author(s)
      片岡智哉
    • Organizer
      令和3年度海洋波に関する研究集会
    • Related Report
      2021 Research-status Report
  • [Presentation] Tsunami wave height estimation along the coast based on tsunami observation and data assimilation by using oceanographic radar on the Southern Coast of Java, Indonesia2021

    • Author(s)
      Muhammad Irham Sahana, Ryotaro Fuji, Hirofumi Hinata
    • Organizer
      30th International Tsunami Symposium
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Tsunami wave height prediction along the coast based on tsunami observation and data assimilation by using oceanographic radar on the Southern Coast of Java, Indonesia2021

    • Author(s)
      Muhammad Irham Sahana, Ryotaro Fuji, Hirofumi Hinata
    • Organizer
      Asia Oceania Geoscience Society (AOGS) 18th Annual Meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Tsunami wave height prediction using HF oceanographic radar based on tsunami observation and data assimilation on the Southern Coast of Java, Indonesia2021

    • Author(s)
      Muhammad Irham Sahana, Ryotaro Fuji, Hirofumi Hinata
    • Organizer
      2nd International Seminar on Civil and Environmental Engineering (ISCEE) 2021
    • Related Report
      2021 Research-status Report
  • [Presentation] The effect of considering angle between bathymetry contour line and radar beam direction in observational points selection to the tsunami forecast performance (case study: southern coast of Java, Indonesia)2021

    • Author(s)
      Muhammad Irham Sahana, Ryotaro Fuji, Hirofumi Hinata
    • Organizer
      国内外における海洋レーダー情報の利活用高度化戦略に関する研究集会
    • Related Report
      2021 Research-status Report
  • [Presentation] Numerical Analysis of Evacuation Start during the 2018 Palu Tsunami, Indonesia2021

    • Author(s)
      Karina A. Sujatmiko and Yoshihiro Okumura
    • Organizer
      the 30th International Tsunami Symposium
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Analysis of Evacuation Generation Process during the 2018 Palu Tsunami2021

    • Author(s)
      Karina A. Sujatmiko, Yoshihiro Okumura, Tamaki Takai, Haruka Ishida
    • Organizer
      第40回自然災害学会学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 津波避難訓練における無人航空機観察と地上目視観察の併用の試み2021

    • Author(s)
      高井環,奥村与志弘,Karina A. SUJATMIKO,石田晴香
    • Organizer
      第40回自然災害学会学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 海洋レーダで観測されたインドネシア南岸の波浪特性2021

    • Author(s)
      片岡智哉,藤良太郎,日向博文
    • Organizer
      国内外における海洋レーダ情報の利活用高度化戦略に関する研究集会
    • Related Report
      2021 Research-status Report
  • [Presentation] アレイアンテナを用いた流速計測における到来方向推定法の適用2020

    • Author(s)
      長江 要,藤井 智史
    • Organizer
      九州大学応用力学研究所研究集会「海洋レーダを用いた 海況監視システムの開発と応用
    • Related Report
      2020 Research-status Report

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Published: 2020-10-29   Modified: 2025-01-30  

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