Modeling of Non-Stationary Electrokinetic Effect in a Conductive Crust.

• Majaeva O.

  National Research Institute for Earth Science and Disaster Prevention

• Fujinawa Y.

  National Research Institute for Earth Science and Disaster Prevention

• Zhitomirsky M. E.

  Institute for Solid State Physics, University of Tokyo

書誌事項

タイトル別名

• Modeling of Non-Stationary Electrokinet

抄録

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^-3 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 (11/12), 1317-1326, 1997

  地球電磁気・地球惑星圏学会

キーワード

• General Earth and Planetary Sciences
• General Environmental Science

詳細情報

• CRID: 1390282681485557376
• NII論文ID: 10002204876
• NII書誌ID: AA00698879
• DOI: 10.5636/jgg.49.1317
• ISSN: 21855765
• ISSN: 00221392
• NDL書誌ID: 4406008
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4406008
• 本文言語コード: en
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