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タイトル: 射線モデルと自己回帰型のモデルを組み合わせた電磁場伝達関数の分解方法 : 水平成層構造の場合
その他のタイトル: A Decomposition Method of the Electromagnetic Transfer Function Using Ray Model and Autoregressive-type Model : the Case of a Horizontal Layered Structure
著者: 横山, 由紀子
熊澤, 峰夫
中島, 崇裕
著者(別言語): Yokoyama, Yukiko
Kumazawa, Mineo
Nakajima, Takahiro
キーワード: electromagnetic sounding
controlled source method
statistical modeling
frequency domain
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. 393-411
抄録: EM ACROSS (electromagnetic accurately controlled routinely operated signal system) is one of electromagnetic exploration methods. In this method, an accurately controlled continuous signal is transmitted and the transfer function of the transmitted and the received electromagnetic fields is observed. Because the transfer function is required to be decomposed to extract information of electromagnetic structure, we here developed such a processing technique. We studied the case of a horizontal structure consisting of isotropic homogeneous layers. We introduced a ray model to describe the transfer function, and then applied an AR (autoregressive)-type model to describe the ray model as a discrete linear system. We further developed a practical algorithm to estimate the parameters of the AR-type model. The present technique is demonstrated to work well in a simple numerical experiment, and we could estimate electric structure easily using the decomposed transfer function.
URI: http://hdl.handle.net/2261/13197
ISSN: 00408972


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