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

页码：1295 / 1298

页数：4

共 50 条

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