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Slip distribution and tectonic implication of the 1999 Chi-Chi, Taiwan, Earthquake

被引：56
作者：
Ji, C [1 ]
Helmberger, DV
Song, TRA
Ma, KF
Wald, DJ
机构：
[1] CALTECH, Seismol Lab 252 21, Pasadena, CA 91125 USA
[2] Natl Cent Univ, Inst Geophys, Chungli 32054, Taiwan
[3] US Geol Survey, Pasadena, CA 91106 USA
来源：
GEOPHYSICAL RESEARCH LETTERS | 2001年 / 28卷 / 23期
关键词：
D O I：
10.1029/2001GL013225
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
We report on the fault complexity of the large (M-w = 7.6) Chi-Chi earthquake obtained by inverting densely and well-distributed static measurements consisting of 119 GPS and 23 doubly integrated strong motion records. We show that the slip of the Chi-Chi earthquake was concentrated on the surface of a "wedge shaped" block. The inferred geometric complexity explains the difference between the strike of the fault plane determined by long period seismic data and surface break observations. When combined with other geophysical and geological observations, the result provides a unique snapshot of tectonic deformation taking place in the form of very large (> 10m) displacements of a massive wedge-shaped crustal block which may relate to the changeover from over-thrusting to subducting motion between the Philippine Sea and the Eurasian plates.
引用
收藏
页码：4379 / 4382
页数：4
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