地震 第2輯
Online ISSN : 1883-9029
Print ISSN : 0037-1114
ISSN-L : 0037-1114
ELF-MT法による花折断層の比抵抗構造
山田 悦久桂 郁雄西村 進西周 潤一
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ジャーナル フリー

1989 年 42 巻 1 号 p. 33-38

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A magnetotelluric survey was carried out at the Hanaori fault area in northeastern Kinki district. Apparent resistivities at four frequencies of ELF band (7.8, 14.0 and 20.4Hz) and VLF band (17.4kHz) were measured along two survey lines perpendicular to the strike of the fault. Two-dimensional analysis using the finite-element method gives an underground resistivity model across the Hanaori fault. The model indicates that a low resistivity zone is 1.4km wide and extends to a depth of more than 800m. We interpret this zone as resulting from fault activities.

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