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

Geophysical Research Letters

By:
, , , , and
DOI: 10.1029/2001GL013225

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Abstract

We report on the fault complexity of the large (Mw = 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.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Slip distribution and tectonic implication of the 1999 Chi-Chi, Taiwan, earthquake
Series title:
Geophysical Research Letters
DOI:
10.1029/2001GL013225
Volume
28
Issue:
23
Year Published:
2001
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geophysical Research Letters
First page:
4379
Last page:
4382