Along strike variations in the electrical structure of the San Andreas Fault at Parkfield, California

被引：104
|
作者：
Unsworth, M [1 ]
Bedrosian, P
Eisel, M
Egbert, G
Siripunvaraporn, W
机构：
[1] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada
[2] Univ Washington, Geophys Program, Seattle, WA 98195 USA
[3] Oregon State Univ, Coll Ocean & Atmospher Sci, Corvallis, OR 97331 USA
来源：
GEOPHYSICAL RESEARCH LETTERS | 2000年 / 27卷 / 18期
关键词：
D O I：
10.1029/2000GL011476
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Magnetotelluric exploration has been used to image along strike variations in the electrical resistivity structure of the San Andreas Fault at Parkfield, California. A low resistivity wedge extending to a depth of several kilometers is continuous over a horizontal distance of 8 km. The base of the wedge is coincident with the shallowest microearthquakes. A change in the electrical and fluid connection of the San Andreas Fault with a low resistivity zone in the Franciscan formation is observed along the Parkfield segment.
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页码：3021 / 3024
页数：4
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