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3D stability problem in accretionary prism formation for maximum size estimation of earthquakes in subduction zone

Research Project

Project/Area Number 23340134
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Solid earth and planetary physics
Research InstitutionJapan Agency for Marine-Earth Science and Technology

Principal Investigator

HORI Takane  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, 主任研究員 (00359176)

Co-Investigator(Kenkyū-buntansha) SAKAGUCHI Hide  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, プログラムディレクター (10235145)
YAMADA Yasuhiro  京都大学, 工学研究科, 准教授 (20362444)
MIYAKAWA Ayumu  独立行政法人産業技術総合研究所, 地質情報研究部門・地質地殻活動研究グループ, 研究員 (50611191)
Co-Investigator(Renkei-kenkyūsha) NISHIURA Daisuke  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 (60509719)
Project Period (FY) 2011-04-01 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2011: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Keywords砂箱実験 / 再現性 / 断層形成 / 予兆現象 / 分岐 / 均質化 / 地震 / 付加体 / 離散要素法 / 非線形動力学
Research Abstract

We have constructed 1m x 1m sand box experiment in which we can control with micron-meter order. As a result, wavy shaped frontal thrust disappeared but linear thrusts are formed. This indicates that the wavy shape is not caused by instability but by initial heterogeneity in sand layer. On the other hand, by preparing homogeneous sandlayer with uniform thickness, position and timing of frontal thrust formation become reproducible in each experiment.

Report

(4 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • Research Products

    (9 results)

All 2013 2012 2011 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (7 results)

  • [Journal Article] Mechanism of décollement formation in subduction zones2011

    • Author(s)
      Hori, T. and H. Sakaguchi
    • Journal Title

      Geophys. J. Int

      Volume: 187 Issue: 3 Pages: 1089-1100

    • DOI

      10.1111/j.1365-246x.2011.05204.x

    • Related Report
      2013 Final Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structural styles across the Nankai accretionary prism revealed from LWD borehole images and their correlation with seismic profile and core data: Results from NanTroSEIZE Stage 1 expeditions2011

    • Author(s)
      Yamada, Y., McNeil, L., Moore J., C., Nakamura, Y.
    • Journal Title

      Geochemistry Geophysics Geosystems

      Volume: 12 Issue: 7 Pages: n/a-n/a

    • DOI

      10.1029/2010gc003365

    • NAID

      120004996568

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Presentation] 付加体とデコルマ形成の力学過程と巨大地震発生メカニズム2013

    • Author(s)
      堀 高峰
    • Organizer
      日本地球惑星科学連合 2013年大会
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2013-05-21
    • Related Report
      2013 Final Research Report
  • [Presentation] 砂箱実験による沈み込みと付加に伴う 3 次元的不安定性問題の抽出2012

    • Author(s)
      堀 高峰
    • Organizer
      日本地球惑星科学連合 2012年大会
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2012-05-25
    • Related Report
      2013 Final Research Report
  • [Presentation] Spontaneous decollement formation and evolution in accretionary prisms2011

    • Author(s)
      Hori, T., H.Sakaguchi
    • Organizer
      Asia Oceania Geoseisnces Society, 2011
    • Place of Presentation
      台北国際コンベンションセンター・台北
    • Year and Date
      2011-08-21
    • Related Report
      2011 Annual Research Report
  • [Presentation] 数値シミュレーションによる付加体先端域における断層形成と応力の動的変化の関連性評価2011

    • Author(s)
      宮川歩夢, 辻健, 山田泰広, 松岡俊文
    • Organizer
      地球惑星科学連合2011年度連合大会
    • Place of Presentation
      幕張メッセ・千葉県
    • Year and Date
      2011-05-25
    • Related Report
      2011 Annual Research Report
  • [Presentation] Mechanical processes of preparation for large scale events2011

    • Author(s)
      堀高峰・阪口秀
    • Organizer
      地球惑星科学連合2011年度連合大会
    • Place of Presentation
      幕張メッセ・千葉県
    • Year and Date
      2011-05-23
    • Related Report
      2011 Annual Research Report
  • [Presentation] 付加体とデコルマ形成の力学過程と巨大地震発生メカニズム

    • Author(s)
      堀高峰, 阪口秀
    • Organizer
      日本地球惑星科学連合2013年大会
    • Place of Presentation
      幕張メッセ,千葉県
    • Related Report
      2013 Annual Research Report
  • [Presentation] 砂箱実験による沈み込みと付加に伴う3次元的不安定性問題の抽出

    • Author(s)
      堀 高峰
    • Organizer
      地球惑星科学連合2012年合同大会
    • Place of Presentation
      幕張メッセ
    • Related Report
      2012 Annual Research Report

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Published: 2011-04-06   Modified: 2019-07-29  

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