Modeling of Non-Stationary Electrokinetic Effect in a Conductive Crust

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The magnetic field, generated by the electrokinetic effect is calculated for a spherical, time-varying pressure source in a layered half-space chosen due to its exact solvability. In addition to a widely discussed steady-state phase, electromagnetic signals of electrokinetic origin have a transient phase which corresponds to their propagation through a conductive crust. The duration of the transient phase depends on a distance from there pressure gradient source and on the crustal conductivity. For characteristic conductivities of 0.1-10<SUP>-3</SUP> S/m and distances of several kilometers the transient phase lasts for 10-100 sec. Although in the layered model both transient and steady state external magnetic fields are zero, this is not so in the general case. Therefore, if the electrokinetic effect occurs in a water filled fault, the transient magnetic field can appear at the surface as an ULF pulse.

収録刊行物

  • Journal of geomagnetism and geoelectricity  

    Journal of geomagnetism and geoelectricity 49(11), 1317-1326, 1997-12 

    Society of Geomagnetism and Earth, Planetary and Space Sciences

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各種コード

  • NII論文ID(NAID)
    10002204876
  • NII書誌ID(NCID)
    AA00698879
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00221392
  • NDL 記事登録ID
    4406008
  • NDL 雑誌分類
    ZM41(科学技術--地球科学)
  • NDL 請求記号
    Z53-A457
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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