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Validating detectability of Tokachi earthquake by assimilating earthquake cycle simulation into observational data

Research Project

Project/Area Number 21710189
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Natural disaster science
Research InstitutionJapan Agency for Marine-Earth Science and Technology

Principal Investigator

ARIYOSHI Keisuke  Japan Agency for Marine-Earth Science and Technology, 地震津波・防災研究プロジェクト, 技術研究副主任 (20436075)

Research Collaborator ARAKI Eiichirou  独立行政法人海洋研究開発機構, 地震津波・防災研究プロジェクト, 技術研究主任 (60359130)
HORI Takane  独立行政法人海洋研究開発機構, 地震津波・防災研究プロジェクト, 研究員 (00359176)
NAKATA Ryoko  独立行政法人海洋研究開発機構, 地震津波・防災研究プロジェクト, 特任技術研究副主任
HYODO Mamoru  独立行政法人海洋研究開発機構, 地球内部ダイナミクス領域, 研究員
AMPUERO Jean-Paul  カリフォルニア工科大学パサディナ校, 准教授
KODERA Toru  日本海洋事業株式会社
Project Period (FY) 2009 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords自然災害 / 予測・分析・対策 / 海溝型巨大地震
Research Abstract

I analyzed tilt meters on seafloor borehole far off Sanriku, northeastern Japan, before and after the 2003 Tokachi-oki earthquake. The analyzed data suggested that after-slip traveled 200 km far from the source region along trench for only two days. I succeeded in reproducing this phenomenon by 3-D numerical simulation, which suggested that pre-slip may be detected by installing borehole observation on a seafloor near the source region. Another simulation result also suggests that migration of low-frequency event may significantly change before a megathrust earthquake such as Tonankai.

Report

(3 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • Research Products

    (21 results)

All 2011 2010 2009

All Journal Article (9 results) (of which Peer Reviewed: 3 results) Presentation (12 results)

  • [Journal Article] 東北地方太平洋沖地震・スマトラ島沖地震における連動型地震の考察2011

    • Author(s)
      有吉慶介, 松澤暢, 矢部康男, 加藤尚之, 日野亮太, 長谷川昭, 金田義行
    • Journal Title

      JAMSTEC Report of Research and Development vol.13(in press)

    • NAID

      130001293353

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Effect of Small Asperities on Tremor Migration at the Edge of Large Asperities Investigated by 3-D Numerical Simulation of a Subduction Plate Boundary.2011

    • Author(s)
      Ariyoshi, K., T.Hori, J.-P.Ampuero, Y.Kaneda, T.Matsuzawa, R.Nakata, A.Hasegawa.
    • Journal Title

      Advances in Geosciences vol.26(in press)

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] 海溝型巨大地震の発生前に期待される,ゆっくり地震の活動変化2011

    • Author(s)
      Keisuke Ariyoshi
    • Journal Title

      Advances in Geosciences

      Volume: (印刷中)

    • NAID

      120006560217

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 様々なイベント間の相互作用と大地震前後の周囲の活動変化2010

    • Author(s)
      有吉慶介
    • Journal Title

      地震予知連絡会会報 vol.84

      Pages: 556-559

    • Related Report
      2010 Final Research Report
  • [Journal Article] 海溝型巨大地震の発生前に期待される,ゆっくり地震の活動変化2010

    • Author(s)
      有吉慶介, 堀高峰, 金田義行, Jean-Paul Ampuero, 松澤暢,日野亮太, 長谷川昭
    • Journal Title

      SENAC vol.43(1)

      Pages: 19-24

    • NAID

      120006560217

    • Related Report
      2010 Final Research Report
  • [Journal Article] 様々なイベント間の相互作用と大地震前後の周囲の活動変化2010

    • Author(s)
      有吉慶介
    • Journal Title

      地震予知連絡会会報

      Volume: 84 Pages: 556-559

    • Related Report
      2010 Annual Research Report
  • [Journal Article] 海溝型巨大地震の発生前に期待される,ゆっくり地震の活動変化2010

    • Author(s)
      有吉慶介
    • Journal Title

      SENAC Vol. 43 No. 1

      Pages: 19-24

    • NAID

      120006560217

    • Related Report
      2009 Annual Research Report
  • [Journal Article] 連鎖反応モデルから想定される深部低周波微動の特徴2009

    • Author(s)
      有吉慶介, 堀高峰, 金田義行, Jean-PaulAmpuero, 松澤暢,日野亮太, 長谷川昭
    • Journal Title

      SENAC vol.42(2)

      Pages: 19-25

    • NAID

      120006560182

    • Related Report
      2010 Final Research Report
  • [Journal Article] 連鎖反応モデルから想定される深部低周波微動の特徴2009

    • Author(s)
      有吉慶介
    • Journal Title

      SENAC Vol. 42 No. 22

      Pages: 19-25

    • NAID

      120006560182

    • Related Report
      2009 Annual Research Report
  • [Presentation] 海溝型地震の解析から示される海底観測の重要性2011

    • Author(s)
      有吉慶介
    • Organizer
      海底地殻変動と津波に関するシンポジウム-海底の先端技術で測る海底地殻変動・津波-
    • Place of Presentation
      東京大学山上会館
    • Year and Date
      2011-01-19
    • Related Report
      2010 Final Research Report
  • [Presentation] 海溝型地震の解析から示される海底観測の重要性2011

    • Author(s)
      有吉慶介
    • Organizer
      海の先端技術で測る-海底地殻変動・津波-
    • Place of Presentation
      東京大学山上会館
    • Year and Date
      2011-01-19
    • Related Report
      2010 Annual Research Report
  • [Presentation] 様々なイベント間の相互作用と大地震前後の周囲の活動変化2010

    • Author(s)
      有吉慶介
    • Organizer
      第186回地震予知連絡会
    • Place of Presentation
      国土地理院 関東地方測量部 地震予知連絡会小会議室
    • Year and Date
      2010-05-26
    • Related Report
      2010 Annual Research Report
  • [Presentation] 様々なイベント間の相互作用と大地震前後の周囲の活動変化2010

    • Author(s)
      有吉慶介
    • Organizer
      第186回地震予知連絡会
    • Place of Presentation
      国土地理院関東地方測量部地震予知連絡会小会議室
    • Year and Date
      2010-05-21
    • Related Report
      2010 Final Research Report
  • [Presentation] Activity change of deep slow earthquakes before megarthrust earthquakes : A new tool for detecting preseismic slip.2009

    • Author(s)
      Ariyoshi, K.
    • Organizer
      American Geophysical Union Fall Meeting.
    • Place of Presentation
      Moscone Center, San Francisco, USA.
    • Year and Date
      2009-12-18
    • Related Report
      2010 Final Research Report
  • [Presentation] Activity change of deep slow earthquakes before megarthrust earthquakes : A new tool for detecting preseismic slip2009

    • Author(s)
      Keisuke Ariyoshi
    • Organizer
      2009 American Geophysical Union Fall Meeting
    • Place of Presentation
      サンフランシスコ・モスコーンセンター
    • Year and Date
      2009-12-18
    • Related Report
      2009 Annual Research Report
  • [Presentation] 沈み込みプレート境界型巨大地震に先行する深部での微動活動変化の特徴2009

    • Author(s)
      有吉慶介
    • Organizer
      日本地震学会2009年度秋季大会
    • Place of Presentation
      京都大学吉田キャンパス
    • Year and Date
      2009-10-21
    • Related Report
      2010 Final Research Report
  • [Presentation] 沈み込みプレート境界型巨大地震に先行する深部での微動活動変化の特徴2009

    • Author(s)
      有吉慶介
    • Organizer
      日本地震学会秋季大
    • Place of Presentation
      京都大学
    • Year and Date
      2009-10-21
    • Related Report
      2009 Annual Research Report
  • [Presentation] Effect of small asperities on tremor migration at the edge of large asperities investigated by 3-D numerical simulation of a subduction plate boundary.2009

    • Author(s)
      Ariyoshi, K.
    • Organizer
      Asia Oceania Geoscieces Society 2009 Annual General Meeting
    • Place of Presentation
      Suntec, Singapore.
    • Year and Date
      2009-08-13
    • Related Report
      2010 Final Research Report
  • [Presentation] Effect of Small Asperities on Tremor Migration at the Edge of Large Asperities Investigated by 3-D Numerical Simulation of a Subduction Plate Boundary2009

    • Author(s)
      Keisuke Ariyoshi
    • Organizer
      Asia Oceania Geosciences Society 6^<th> Annual General Meeting
    • Place of Presentation
      シンガポール国際会議場
    • Year and Date
      2009-08-13
    • Related Report
      2009 Annual Research Report
  • [Presentation] 海底孔内観測データに基づく余効すべり過程の推定2009

    • Author(s)
      有吉慶介
    • Organizer
      日本地球惑星科学関連学会2009年合同大会
    • Place of Presentation
      千葉市・幕張メッセ
    • Year and Date
      2009-05-18
    • Related Report
      2009 Annual Research Report
  • [Presentation] 海底孔内観測データに基づく余効すべり過程の推定2009

    • Author(s)
      有吉慶介
    • Organizer
      日本地震学会2009年度秋季大会
    • Place of Presentation
      日本地球惑星科学連合2009 年大会,千葉,幕張メッセ
    • Year and Date
      2009-05-17
    • Related Report
      2010 Final Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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