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Is the Focal Region of the Shallow Slow Earthquake a Tsunami Source Area? A Geophysical and Geological Study of the 1662 Hyuga-nada Earthquake Tsunami

Research Project

Project/Area Number 17K01328
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Natural disaster / Disaster prevention science
Research InstitutionKyoto University

Principal Investigator

Yamashita Yusuke  京都大学, 防災研究所, 助教 (80725052)

Co-Investigator(Kenkyū-buntansha) 伊尾木 圭衣  国立研究開発法人産業技術総合研究所, 地質調査総合センター, 主任研究員 (70784130)
加瀬 善洋  地方独立行政法人北海道立総合研究機構, 産業技術環境研究本部 エネルギー・環境・地質研究所, 研究主任 (20707715)
Project Period (FY) 2017-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords日向灘 / 浅部スロー地震 / 津波堆積物 / 津波浸水シミュレーション / 津波堆積物調査 / スロー地震 / 津波
Outline of Final Research Achievements

The 1662 Hyuga-nada earthquake is considered to be one of the largest earthquakes that occurred in Hyuga-nada. We constructed a new fault model of this earthquake based on the latest geophysical knowledge, such as the results of ocean bottom seismic observations of shallow slow earthquakes and the location of plate boundaries obtained by seismic surveys and tomographic analysis. To validate the model, we conducted a survey of tsunami deposits in the coastal area of Miyazaki Prefecture and evaluated them by tsunami inundation simulation using the fault model. As a result, we show for the first time scientifically that the 1662 Hyuga-nada earthquake may have been a M8-class giant earthquake.

Academic Significance and Societal Importance of the Research Achievements

2011年東北地方太平洋沖地震の発生以降,沈み込み帯の各地域において起こりうる最大規模の地震を再考が求められている.本研究は,日向灘で発生する最大クラスの地震について,「M8級は起こらない」という通説を覆し,M8 級巨大地震も起こる可能性を初めて科学的に示した点,日向灘沿岸の地震・津波の防災など社会的に役立つ点で意義がある.また,歴史地震の研究においてこれまで大きな津波を説明するため,断層をプレート境界浅部まで広げることはあったが,「なぜその場所の断層をすべらせるのか?」という科学的な根拠についての議論は十分ではなく,本研究ではこの点がこれまでの研究とは異なる.

Report

(7 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (38 results)

All 2022 2021 2020 2019 2018 2017 Other

All Int'l Joint Research (3 results) Journal Article (11 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 10 results,  Open Access: 8 results) Presentation (24 results) (of which Int'l Joint Research: 10 results)

  • [Int'l Joint Research] GNS Science/Victoria University of Wellington(ニュージーランド)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] GNS Science(ニュージーランド)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] GNS Science(ニュージーランド)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Event deposits recognized in the lowlands along the Tsugaru Strait, Hokkaido, Japan2022

    • Author(s)
      Kase Yoshihiro、Kawakami Gentaro、Koyasu Hiromichi、Takahashi Ryo、Sagayama Tsumoru、Nishina Kenji
    • Journal Title

      The Journal of the Geological Society of Japan

      Volume: 128 Issue: 1 Pages: 7-26

    • DOI

      10.5575/geosoc.2021.0035

    • NAID

      130008159794

    • ISSN
      0016-7630, 1349-9963
    • Year and Date
      2022-02-15
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of the Tsunami Generated by the 1662 Hyuga-Nada Earthquake off Miyazaki Prefecture, Japan2022

    • Author(s)
      Ioki Kei、Yamashita Yusuke、Kase Yoshihiro
    • Journal Title

      Pure and Applied Geophysics

      Volume: - Issue: 6 Pages: 1897-1907

    • DOI

      10.1007/s00024-022-03198-3

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 2022年1月22日に日向灘で発生したMJ6.6の地震について2022

    • Author(s)
      山下裕亮
    • Journal Title

      宮崎の自然と環境

      Volume: 7 Pages: 39-43

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Seafloor depth controls seismograph orientation uncertainty2022

    • Author(s)
      Sawaki Yasunori、Yamashita Yusuke、Ohyanagi Shukei、Garcia Emmanuel Soliman M、Ito Aki、Sugioka Hiroko、Takahashi Tsutomu、Shinohara Masanao、Ito Yoshihiro
    • Journal Title

      Geophysical Journal International

      Volume: 232 Issue: 2 Pages: 1376-1392

    • DOI

      10.1093/gji/ggac397

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Development of a Compact Broadband Ocean-Bottom Seismometer2021

    • Author(s)
      Shinohara, M., T. Yamada, H. Shiobara, and Y. Yamashita
    • Journal Title

      Seismol. Res. Lett.

      Volume: 92 Issue: 6 Pages: 3610-3625

    • DOI

      10.1785/0220210100

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Shallow tectonic tremor activities in Hyuga-nada, Nankai subduction zone, based on long-term broadband ocean bottom seismic observations2021

    • Author(s)
      Yamashita Yusuke、Shinohara Masanao、Yamada Tomoaki
    • Journal Title

      Earth, Planets and Space

      Volume: 73 Issue: 1

    • DOI

      10.1186/s40623-021-01533-x

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Generation mechanism of large later phases of the 2011 Tohoku-oki tsunami causing damages in Hakodate, Hokkaido, Japan2019

    • Author(s)
      Tanioka Yuichiro、Shibata Mizuho、Yamanaka Yusuke、Gusman Aditya Riadi、Ioki Kei
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 6 Issue: 1 Pages: 30-38

    • DOI

      10.1186/s40645-019-0278-x

    • NAID

      120006729578

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Numerical Simulation of the Landslide and Tsunami Due to the 1741 Oshima‐Oshima Eruption in Hokkaido, Japan2019

    • Author(s)
      Ioki Kei、Tanioka Yuichiro、Yanagisawa Hideaki、Kawakami Gentaro
    • Journal Title

      Journal of Geophysical Research: Solid Earth

      Volume: 124 Issue: 2 Pages: 1991-2002

    • DOI

      10.1029/2018jb016166

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Characteristics of an atypical large-meander path of the Kuroshio current south of Japan formed in September 20172018

    • Author(s)
      Nagano Akira、Yamashita Yusuke、Hasegawa Takuya、Ariyoshi Keisuke、Matsumoto Hiroyuki、Shinohara Masanao
    • Journal Title

      Marine Geophysical Research

      Volume: なし Issue: 4 Pages: 1-15

    • DOI

      10.1007/s11001-018-9372-5

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 北海道東部の霧多布湿原における13世紀および17世紀頃の海岸線の推定2018

    • Author(s)
      伊尾木 圭衣、澤井 祐紀、行谷 佑一、谷川 晃一朗、松本 弾、嶋田 侑眞
    • Journal Title

      活断層・古地震研究報告

      Volume: 18 Pages: 37-42

    • NAID

      40021836283

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tidal Response in Shallow Tectonic Tremors2017

    • Author(s)
      Katakami S.、Yamashita Y.、Yakihara H.、Shimizu H.、Ito Y.、Ohta K.
    • Journal Title

      Geophysical Research Letters

      Volume: 44 Issue: 19 Pages: 9699-9706

    • DOI

      10.1002/2017gl074060

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Shallow tremor activity in the Hyuga-nada revealed by the seafloor observation of “Science of Slow earthquakes”2021

    • Author(s)
      Yamashita, Y., M. Shinohara, H. Sugioka, A. Ito, T. Takahashi, D. Suetsugu
    • Organizer
      JpGU2021
    • Related Report
      2021 Research-status Report
  • [Presentation] Scaled energy of shallow slow earthquakes in Hyuga-nada, southwest Japan2021

    • Author(s)
      Baba, S., S. Takemura, K. Obara, A. Takeo, Y. Yamashita, M. Shinohara
    • Organizer
      JpGU2021
    • Related Report
      2021 Research-status Report
  • [Presentation] Moment tensor inversion of shallow very low-frequency earthquakes in the northern Ryukyu subduction zone and the Hyuga-nada region2021

    • Author(s)
      Ito, A., H. Sugioka, M. Nakano, Y. Yamashita, M. Shinohara, T. Takahashi, D. Suetsugu, T. Tonegawa
    • Organizer
      JpGU2021
    • Related Report
      2021 Research-status Report
  • [Presentation] Shallow low-frequency tremor at Hyuga-nada (2017-2018)2020

    • Author(s)
      山下裕亮・篠原雅尚・杉岡裕子・伊藤亜妃
    • Organizer
      スロー地震研究集会2020
    • Related Report
      2020 Research-status Report
  • [Presentation] 山下 裕亮、仲谷 幸浩、八木原 寛、平野 舟一郎、中尾 茂、宮町 宏樹、小林 励司、清水 洋、松島 健、内田 和也、中東 和夫、阿部 英二、山田 知朗、篠原 雅尚2020

    • Author(s)
      喜界島東方海域における浅部低周波微動活動(その1)
    • Organizer
      日本地震学会2020年度秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Y. Yamashita, K. Mochizuki, M. Savage, E. Warren-Smith, L. Wallace.2020

    • Author(s)
      Ocean bottom seismological observations for of slow earthquake activity in the northern part of the Hikurangi subduction margin, New Zealand
    • Organizer
      AGU Fall Meeting 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Spatiotemporal variation of released seismic energy from shallow low-frequency tremor in Hyuga-nada, revealed by ocean bottom seismological observation2019

    • Author(s)
      山下 裕亮・渡邉 早姫・山田 知朗・篠原 雅尚・松島 健
    • Organizer
      JpGU2019
    • Related Report
      2019 Research-status Report
  • [Presentation] Shallow low-frequency tremor activity during 1st observation of “Science of slow earthquakes”2019

    • Author(s)
      山下裕亮・篠原雅尚・杉岡裕子・伊藤亜妃
    • Organizer
      スロー地震国際合同研究集会2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Shallow very-low-frequency earthquake activity in the Hyuga-nada region revealed by long-term ocean bottom seismological observation2018

    • Author(s)
      Yusuke Yamashita, Masanao Shinohara, Tomoaki Yamada, Saki Watanabe, Kazuo Nakahigashi, Hajime Shiobara, Kimihiro Mochizuki, Takuto Maeda, and Kazushige Obara
    • Organizer
      JpGU 2018
    • Related Report
      2018 Research-status Report
  • [Presentation] Activity of shallow low-frequency tremor in the Hyuga-nada, revealed by ocean bottom seismological observation2018

    • Author(s)
      Saki Watanabe, Yusuke Yamashita, Tomoaki Yamada, and Masanao Shinohara
    • Organizer
      JpGU 2018
    • Related Report
      2018 Research-status Report
  • [Presentation] Spatiotemporal Variation of Shallow Low-Frequency Tremor and Very-Low-Frequency Earthquake Activity in the Western Part of Nankai Trough Revealed by Long-Term Ocean Bottom Seismological Observation2018

    • Author(s)
      Yusuke Yamashita, Masanao Shinohara, Tomoaki Yamada, Saki Watanabe, Kazuo Nakahigashi, Hajime Shiobara, Kimihiro Mochizuki, Takuto Maeda, and Kazushige Obara
    • Organizer
      Asia Oceania Geosciences Society 15th Annual Meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Activity of Shallow Tremor in the Hyuga-Nada Region After the 2016 Kumamoto Earthquake by Ocean Bottom Seismological Observation2018

    • Author(s)
      Saki Watanabe, Yusuke Yamashita, Tomoaki Yamada, and Masanao Shinohara
    • Organizer
      Asia Oceania Geosciences Society 15th Annual Meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 日向灘浅部低周波微動活動に伴うエネルギー解放量の特徴2018

    • Author(s)
      渡邉早姫・山下裕亮・山田知朗・篠原雅尚
    • Organizer
      2018年日本地震学会秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Does a focal region of shallow slow earthquake become a source area of tsunami? -Approach of geophysical and geological survey for a large historical earthquake-2018

    • Author(s)
      Yusuke Yamashita, Yoshihiro Kase, and Kei Ioki
    • Organizer
      American Geophysical Union 2018 Fall Meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Spatio-temporal Variation of Seismic Energy Released by Shallow Low-frequency Tremors in the Hyuga-nada, SW Japan, revealed by Ocean Bottom Seismological Observation2018

    • Author(s)
      Saki Watanabe, Yusuke Yamashita, Tomoaki Yamada, and Masanao Shinohara
    • Organizer
      American Geophysical Union 2018 Fall Meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Shallow slow earthquake activity from the Hyuga-nada to Ryukyu Trench2017

    • Author(s)
      Yusuke Yamashita, Masanao Shinohara, Hiroshi Yakiwara, Tomoaki Yamada, Saki Watanabe, Kazuo Nakahigashi, Hajime Shiobara, Kimihiro Mochizuki, Takuto Maeda, and Kazushige Obara
    • Organizer
      AGU Fall Meeting 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Activity in the Hyuga-nada region after the 2016 Kumamoto Earthquake Revealed by Ocean Bottom Seismological Observation2017

    • Author(s)
      Saki Watanabe, Yusuke Yamashita, Tomoaki Yamada, and Masanao Shinohara
    • Organizer
      AGU Fall Meeting 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of compact long-term broadband ocean bottom seismometer for seafloor observation of slow earthquakes2017

    • Author(s)
      Masanao Shinohara, Tomoaki Yamada, Hajime Shiobara, Yusuke Yamashita
    • Organizer
      AGU Fall Meeting 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 長期海底地震観測に基づく日向灘~南西諸島海溝中部域にかけての浅部低周波微動活動の特徴2017

    • Author(s)
      山下裕亮・篠原雅尚・八木原寛・山田知朗・渡邉早姫・中東和夫・塩原肇・望月公廣・前田拓人・小原一成
    • Organizer
      2017年日本地震学会秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Low-frequency tremor activity in the shallow part of Nankai trough and Ryukyu trench revealed by long-term ocean bottom observation2017

    • Author(s)
      Yusuke Yamashita, Masanao Shinohara, Hiroshi Yakiwara, Tomoaki Yamada, Kazuo Nakahigashi, Hajime Shiobara, Kimihiro Mochizuki, Takuto Maeda, and Kazushige Obara
    • Organizer
      IAG-IASPEI 2017.
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 陸上および海陸地震観測データの統合解析による日向灘の3次元速度構造の推定2017

    • Author(s)
      近藤健太郎・清水 洋・山下裕亮・八木原 寛・馬越孝道・松島 健・平野舟一郎・内田 和也
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Related Report
      2017 Research-status Report
  • [Presentation] Tidal response in shallow micro low-frequency tremors2017

    • Author(s)
      片上 智史・山下 裕亮・八木原 寛・清水 洋・伊藤 喜宏・太田 和晃
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Related Report
      2017 Research-status Report
  • [Presentation] 海底観測記録を用いた日向灘の浅部超低周波地震の震央位置決定2017

    • Author(s)
      利根川貴志・山下裕亮・高橋努・篠原雅尚・石原靖・小平秀一・金田義行
    • Organizer
      2017年日本地震学会秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 日向灘における海底地震観測にもとづく2016年熊本地震後の浅部低周波微動活動2017

    • Author(s)
      渡邉早姫・山下裕亮・山田知朗・篠原雅尚
    • Organizer
      2017年日本地震学会秋季大会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2024-01-30  

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