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Estimation of earthquake information necessary for tsunami early warning

Research Project

Project/Area Number 24540460
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Solid earth and planetary physics
Research InstitutionBuilding Research Institute

Principal Investigator

Hara Tatsuhiko  国立研究開発法人建築研究所, 国際地震工学センター, 上席研究員 (40360466)

Project Period (FY) 2012-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsマグニチュード / 津波警報
Outline of Final Research Achievements

We derived a set of the coefficients of the magnitude formula using high frequency seismic signal durations and maximum displacement amplitudes measured from regional data by a grid search approach. We showed that tsunami earthquakes were characterized by small displacement amplitudes and long high frequency seismic signal durations measured from regional data. We revised a set of the magnitude formula coefficients for tele-seismic data. We measured strong motion durations and maximum displacement amplitudes. Their products with epicentral distances show a good correlation with moment magnitudes. We developed a method to determine the end point of rupture using high frequency seismic signal durations from tele-seismic data.

Report

(5 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (9 results)

All 2016 2015 2014 2013 2012

All Presentation (9 results)

  • [Presentation] リージョナルデータに対するMhddの係数の決定2016

    • Author(s)
      原辰彦
    • Organizer
      日本地球惑星科学連合2016年大会
    • Place of Presentation
      幕張メッセ国際会議場
    • Year and Date
      2016-05-22
    • Related Report
      2015 Annual Research Report
  • [Presentation] 高周波震動継続時間と変位振幅を用いたマグニチュードの性質2015

    • Author(s)
      原辰彦
    • Organizer
      日本地震学会講演予稿集2015年度秋季大会
    • Place of Presentation
      神戸国際会議場
    • Year and Date
      2015-10-28
    • Related Report
      2015 Annual Research Report
  • [Presentation] 強震動の継続時間と変位振幅を用いた地震規模決定の可能性2015

    • Author(s)
      原辰彦
    • Organizer
      日本地球惑星科学連合2015年大会
    • Place of Presentation
      幕張メッセ国際会議場
    • Year and Date
      2015-05-25
    • Related Report
      2015 Annual Research Report
  • [Presentation] HFER duration and displacement amplitudes from regional P waves as a possible tsunami earthquake discriminant2014

    • Author(s)
      原 辰彦
    • Organizer
      米国地球物理学連合2014年秋季大会
    • Place of Presentation
      サンフランシスコ(米国)
    • Year and Date
      2014-12-16
    • Related Report
      2014 Research-status Report
  • [Presentation] 強震動の継続時間の計測と遠地P波の高周波震動継続時間との比較2014

    • Author(s)
      原 辰彦
    • Organizer
      日本地震学会講演予稿集2014年度秋季大会
    • Place of Presentation
      朱鷺メッセ新潟コンベンションセンター(新潟市)
    • Year and Date
      2014-11-24
    • Related Report
      2014 Research-status Report
  • [Presentation] グリッドサーチ法によるMhddの係数決定2014

    • Author(s)
      原 辰彦
    • Organizer
      日本地球惑星科学連合2014年大会
    • Place of Presentation
      パシフィコ横浜
    • Related Report
      2013 Research-status Report
  • [Presentation] 高周波震動継続時間と変位振幅を用いたマグニチュード:改定とリージョナルデータへの適用2013

    • Author(s)
      原 辰彦
    • Organizer
      日本地震学会講演予稿集2013年度秋季大会
    • Place of Presentation
      神奈川県民ホール、産業貿易センター(横浜市)
    • Related Report
      2013 Research-status Report
  • [Presentation] Determination of rupture propagation by measurements of durations of high frequency energy radiation2013

    • Author(s)
      原 辰彦
    • Organizer
      米国地球物理学連合2013年秋季大会
    • Place of Presentation
      サンフランシスコ(米国)
    • Related Report
      2013 Research-status Report
  • [Presentation] Magnitude determination using duration of high frequency energy radiation and displacement amplitude: application to waveform data recorded in regional distance range2012

    • Author(s)
      Tatsuhiko Hara
    • Organizer
      米国地球物理学連合2012年秋季大会
    • Place of Presentation
      サンフランシスコ(米国)
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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