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タイトル: 電磁アクロスの開発と送信実験
その他のタイトル: Development of EM-ACROSS and Its Field Test
著者: 中島, 崇裕
國友, 孝洋
熊澤, 峰夫
横山, 由紀子
著者(別言語): Nakajima, Takahiro
Kunitomo, Takahiro
Kumazawa, Mineo
Yokoyama, Yukiko
キーワード: electromagnetic sounding
発行日: 2001年3月29日
出版者: 東京大学地震研究所
掲載誌情報: 東京大学地震研究所彙報. 第75冊第3/4号, 2001.3.29, pp. 413-428
抄録: A new electromagnetic sounding method called EM-ACROSS is proposed by Ogawa and Kumazawa [1996]. The characteristic feature of this approach is the use of accurately controlled electromagnetic waves to determine the accurate transfer function between source signal and observed signal. Upon developing the hardware system of EM-ACROSS, the first field test was carried out in the Tono area. The transmitting test and trial observations with a rectangular wave signal from current dipole showed that the system worked well up to 100Hz. Data stacking represented the reduction of the observation noise as accurately as theoretically expected. With stacking for eight hours, signals were detected up to 30Hz at a distance of 3km. Whereas the results obtained so far are preliminary, the ACROSS approach is thought to have potential for underground exploration and monitoring.
URI: http://hdl.handle.net/2261/13198
ISSN: 00408972


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