Coseismic and postseismic crustal deformation after the Mw 8 Tokachi-oki earthquake in Japan

被引：73

作者：

Ozawa, S

Kaidzu, M

Murakami, M

Imakiire, T

Hatanaka, Y

机构：

[1] Geographical Survey Institute of Japan,

来源：

EARTH PLANETS AND SPACE | 2004年 / 56卷 / 07期

关键词：

Tokachi-oki earthquake; coseismic deformation; afterslip; postseismic deformation;

D O I：

10.1186/BF03352530

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The permanent Global Positioning System (GPS) array in Japan detected coseismic and postseimic deformation of the 2003 Tokachi-oki earthquake (M-w) 8). We estimate the time evolution of its postseismic slip, together with its coseismic slip distribution. The result shows that the postseismic slip has been occurring mainly in an area adjacent to he coseismic slips, propagating to the northeast and southwest. This suggests that, as of March 6, 2004, the postseismic slip of the strongly coupled area neighboring the coseismic rupture partly released seismic moment, equivalent to an earthquake of M-w 7.8.

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收藏

页码：675 / 680

页数：6

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