| 講演要旨(和文) | | 早稲田大学探査工学研究室は夏季休業期間に早稲田大学の校地において物理探査実習を行っている．平成24年度からは泥火山の地下構造を対象として，早稲田大学松代セミナーハウスおよび松代自動車練習場の所在する新潟県十日町市松代地区において，時間領域電磁探査，屈折法地震探査，比抵抗電気探査，掘削による浅部比抵抗の計測を実施した．本稿では，平成25年に実施した実習内容と，その結果を紹介する． |
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| | 講演要旨(英文) | | As the part of the research activities in Waseda University, we conduct the practice of geophysical surveys every summer. In Tokamachi city, Nigata prefecture, which was chosen as the site of the practice for 2012 and 2013, ongoing mud volcanism is evidently confirmed. With a view to evaluate the physical properties of the structure around Murono mud volcano, three methods of geophysical survey: the resistivity survey, the time domain electromagnetic survey and the refraction seismic survey were conducted. We expected that the horizontal spread of mud chamber would be estimated by utilizing long survey lines for each measurement. In addition, a kind of resistivity logging was tentatively performed to examine the shallow resistivities. |
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