The electrical structure across the Median Tectonic Line in east Shikoku, southwest Japan

• Goto Tadanori

  Research Center for Earthquake Prediction, Disaster Prevention Research Institute, Kyoto University

• Yamaguchi Satoru

  Department of Earth and Planetary Sciences, Faculty of Science, Kobe University

• Sumitomo Norihiko

  Research Center for Earthquake Prediction, Disaster Prevention Research Institute, Kyoto University

• Yaskawa Katsumi

  Southern Osaka University

抄録

The Median Tectonic Line (MTL) is one of the longest tectonic lines in Japan with the lateral movement. In order to investigate the subsurface structure around the MTL, we carried out the magnetotelluric soundings and the geomagnetic depth soundings in the northeastern Shikoku district, southwest Japan. We estimated the resistivity model at the depth from the surface to 10 km, which explains the observed apparent resistivities and phases. The most remarkable feature of the resistivity model is that the subsurface extension of the MTL has a north dip down to 5 km depth. This dipping interface also corresponds to a reflection seismic result. The north dipping MTL cannot be created by just a present strike slip motion. It requires that the horizontally compressive stress dominated in the early stage of the fault.

収録刊行物

• Ｅａｒｔｈ，　Ｐｌａｎｅｔｓ　ａｎｄ　Ｓｐａｃｅ

  Ｅａｒｔｈ，　Ｐｌａｎｅｔｓ　ａｎｄ　Ｓｐａｃｅ 50 (5), 405-415, 1998

  地球電磁気・地球惑星圏学会 、公益社団法人 日本地震学会、特定非営利活動法人 日本火山学会、日本測地学会、日本惑星科学会

キーワード

• Space and Planetary Science
• Geology

詳細情報

• CRID: 1390282681487712512
• NII論文ID: 10002206625
• NII論文ID: 130003955911
• NII書誌ID: AA11211921
• DOI: 10.1186/bf03352127
• ISSN: 18805981
• ISSN: 13438832
• Web Site: https://link.springer.com/content/pdf/10.1186/BF03352127.pdf
• Web Site: https://link.springer.com/article/10.1186/BF03352127/fulltext.html
• Web Site: http://link.springer.com/content/pdf/10.1186/BF03352127
• 本文言語コード: en
• データソース種別:
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• 抄録ライセンスフラグ: 使用不可