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Comparison between observed and predicted EM signals during seismic wave propagations

Research Project

Project/Area Number 24740304
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Solid earth and planetary physics
Research InstitutionKyoto University

Principal Investigator

YAMAZAKI Ken'ichi  京都大学, 防災研究所, 助教 (20436588)

Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords地磁気 / 電磁場変動 / 地震波 / 電気伝導度 / 地震 / 電磁場 / 電磁誘導 / 応力磁気効果 / 地震現象 / 界面導電効果
Outline of Final Research Achievements

Electromagnetic (EM) variations simultaneous to seismic wave propagations have been sometimes reported. In the present study, I have investigated a problem whether known theories of mechano-EM convergences are accountable for observational facts on co-seismic EM variations. The result implies conventional theories cannot account entire amount of EM varitaions during seismic wave propagations, meaning that there are still hidden mechanism(s) by which seismic phenomena are converted to EM phenomena in the solid Earth.

Report

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

    (11 results)

All 2014 2013 2012

All Journal Article (3 results) (of which Peer Reviewed: 2 results) Presentation (8 results)

  • [Journal Article] 地震時電磁場変動の観測値と計算値の比較、およびその結果の意味2014

    • Author(s)
      山崎 健一
    • Journal Title

      2013年度CA研究会論文集

      Volume: なし

    • NAID

      40020455751

    • Related Report
      2013 Research-status Report
  • [Journal Article] Improved models of the piezomagnetic field for the 2011 Mw 9.0 Tohoku-oki earthquake2013

    • Author(s)
      Ken'ichi Yamazaki
    • Journal Title

      Earth and Planetary Science Letters

      Volume: 363 Pages: 9-15

    • DOI

      10.1016/j.epsl.2012.12.019

    • NAID

      120005241360

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Estimation of temporal variations in the magnetic field arising from the motional induction that accompanies seismic waves at a large distance from the epicentre2012

    • Author(s)
      Ken'ichi Yamazaki
    • Journal Title

      Geophysical Journal International

      Volume: 190 Issue: 3 Pages: 1393-1403

    • DOI

      10.1111/j.1365-246x.2012.05586.x

    • NAID

      120005593568

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] Estimation of Electro-Magnetic Signals Generated by Stress Changes before the Arrival of Seismic Waves2014

    • Author(s)
      Yamazaki, K.
    • Organizer
      The 2014 AGU Fall Meeting
    • Place of Presentation
      サンフランシスコ(アメリカ合衆国)
    • Year and Date
      2014-12-15 – 2014-12-19
    • Related Report
      2014 Annual Research Report
  • [Presentation] 応力磁気効果起源の電磁場変動計算における無限媒質近似の妥当性2014

    • Author(s)
      山崎健一
    • Organizer
      地球惑星科学連合2014年大会
    • Place of Presentation
      神奈川県横浜市
    • Year and Date
      2014-04-28 – 2014-05-02
    • Related Report
      2014 Annual Research Report
  • [Presentation] 地震時電磁場変動の観測値と計算値の比較、およびその結果の意味2014

    • Author(s)
      山崎 健一
    • Organizer
      2013年度CA研究会
    • Place of Presentation
      東京大学地震研究所
    • Related Report
      2013 Research-status Report
  • [Presentation] 地震発生直後に応力磁気効果により生じる磁場変化について-二次元問題の計算例-2013

    • Author(s)
      山崎 健一
    • Organizer
      地球惑星科学連合2013年大会
    • Place of Presentation
      千葉市幕張メッセ
    • Related Report
      2013 Research-status Report
  • [Presentation] Feasibility of Detecting Earthquake Occurrences before Quakes at the Site in terms of the Piezomagnetic Effect2013

    • Author(s)
      Ken'ichi Yamazaki
    • Organizer
      The 2013 American Geophysical Union Fall Meeting
    • Place of Presentation
      Moscone center, San Fransisco, USA
    • Related Report
      2013 Research-status Report
  • [Presentation] 地震発生直後に応力磁気効果により生じる磁場変化について-二次元問題の計算例-2013

    • Author(s)
      山崎 健一
    • Organizer
      地球惑星科学連合2013年大会
    • Place of Presentation
      千葉県千葉市
    • Related Report
      2012 Research-status Report
  • [Presentation] Modeling of the Piezomagnetic Field for the 2011 Tohoku-oki Earthquake (Mw 9.0) in Japan2012

    • Author(s)
      Ken'ichi Yamazaki
    • Organizer
      American Geophysical Union’s 45th annual Fall Meeting
    • Place of Presentation
      San Fransisco, USA
    • Related Report
      2012 Research-status Report
  • [Presentation] 地震動に伴う電磁誘導から生じる磁場変動2012

    • Author(s)
      山崎 健一
    • Organizer
      地球惑星科学連合2012年大会
    • Place of Presentation
      千葉県千葉市
    • Related Report
      2012 Research-status Report

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

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