Preliminary Magnetotelluric Modeling in the Nikko Volcanic Area -Potential Break of Fluid Trap by Volcanic Intrusion

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We collected magnetotelluric data in the Nikko volcanic area in the period range from 0.01 to 10 sec. Impedance data were decomposed with the regional strike direction N0°E and were analized by two-dimensional inversions including static shifts as model parameters. The major model features are: (1) southern conductor at 8 km depth which is consistent with the seismic S-wave reflectors, (2) northern conductor located at 5 km depth, consistent with the seismic attenuation zones, and (3) a resistitive gap in between, consistent with the magnetic body inferred from aeromagnetic data. The two conductors probably imply trapped free water at around 400°C. The resistor in between implies the volcanic body, which intruded the crust and may have broken the regime of trapped free water.

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  • Journal of geomagnetism and geoelectricity  

    Journal of geomagnetism and geoelectricity 49(8), 1073-1078, 1997-08 

    Society of Geomagnetism and Earth, Planetary and Space Sciences

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各種コード

  • NII論文ID(NAID)
    10002204338
  • NII書誌ID(NCID)
    AA00698879
  • 本文言語コード
    ENG
  • 資料種別
    SHO
  • ISSN
    00221392
  • NDL 記事登録ID
    4287756
  • 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  CJP引用  NDL  J-STAGE 
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