High pore fluid pressure may cause silent slip in the Nankai Trough

被引：380
|
作者：
Kodaira, S
Iidaka, T
Kato, A
Park, JO
Iwasaki, T
Kaneda, Y
机构：
[1] Japan Agcy Marine Earth Sci & Technol, Inst Frontier Res Earth Evolut, Kanazawa Ku, Yokohama, Kanagawa 2360001, Japan
[2] Univ Tokyo, Earthquake Res Inst, Bunkyo Ku, Tokyo 1130032, Japan
来源：
SCIENCE | 2004年 / 304卷 / 5675期
关键词：
D O I：
10.1126/science.1096535
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Silent-slip events have been detected at several subduction zones, but the cause of these events is unknown. Using seismic imaging, we detected a cause of the Tokai silent slip, which occurred at a presumed fault zone of a great earthquake. The seismic image that we obtained shows a zone of high pore fluid pressure in the subducted oceanic crust located down-dip of a subducted ridge. We propose that these structures effectively extend a region of conditionally stable slips and consequently generate the silent slip.
引用
收藏
页码：1295 / 1298
页数：4
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