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Temporal variation in crustal structure derived from hybrid analysis of the seismic attenuation and anisotropy

Research Project

Project/Area Number 21740328
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Solid earth and planetary physics
Research InstitutionNagoya University

Principal Investigator

TADOKORO Keiichi  名古屋大学, 大学院・環境学研究科, 准教授 (70324390)

Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords観測手法 / 地震波の減衰 / 地震波異方性 / 地殻構造 / 群発地震 / 火山 / S波偏向異方性 / 地殻内流体 / 地震 / 偏向異方性
Research Abstract

We detected a crack structure with high crack density, whose direction is parallel to the epicenter alignment, in the region of the 2009 earthquake swarm at the Hakone volcano.Crustal fluid was included in the above crack structure during the earthquake swarm period. It was suggested that another crack structure was dominant during the period without earthquake swarm. This study presents that crustal structure possibly varies accompanied with occurrences of earthquake swarm.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (5 results)

All 2011 2010

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (4 results)

  • [Journal Article] Spatial distribution of crack structure in the focal area of a volcanic earthquake swarm at the Hakone volcano, Japan2011

    • Author(s)
      Nihara, Y., Tadokoro, K., Y. Yukutake, R. Honda, and H. Ito
    • Journal Title

      Earth Planet Space

      Volume: (印刷中)

    • NAID

      10031160556

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Presentation] 箱根火山における2009年の群発地震発生とクラック分布との関係2011

    • Author(s)
      丹原裕・田所敬一, 他3名
    • Organizer
      日本地震学会2011年秋季大会
    • Place of Presentation
      静岡
    • Year and Date
      2011-10-12
    • Related Report
      2011 Annual Research Report
  • [Presentation] 箱根火山の群発地震発生域におけるS波スプリッティング解析2011

    • Author(s)
      丹原裕・田所敬一
    • Organizer
      地球惑星科学連合大会
    • Place of Presentation
      千葉
    • Year and Date
      2011-05-23
    • Related Report
      2011 Final Research Report
  • [Presentation] 箱根火山の群発地震発生域におけるS波スプリッティング解析2011

    • Author(s)
      丹原裕・田所敬一
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      幕張
    • Year and Date
      2011-05-23
    • Related Report
      2011 Annual Research Report
  • [Presentation] 箱根火山における2009年の群発地震発生とクラック分布との関係2010

    • Author(s)
      丹原裕・田所敬一・行竹洋平・本多亮・伊東博
    • Organizer
      日本地震学会秋季大会
    • Place of Presentation
      静岡
    • Year and Date
      2010-10-12
    • Related Report
      2011 Final Research Report

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

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