CaltechAUTHORS
  A Caltech Library Service

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

Ji, Chen and Helmberger, Donald V. and Song, Teh‐Ru Alex and Ma, Kuo‐Fong and Wald, David J. (2001) Slip distribution and tectonic implication of the 1999 Chi‐Chi, Taiwan, Earthquake. Geophysical Research Letters, 28 (23). pp. 4379-4382. ISSN 0094-8276. http://resolver.caltech.edu/CaltechAUTHORS:20110111-102716913

[img] PDF - Published Version
See Usage Policy.

536Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20110111-102716913

Abstract

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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1029/2001GL013225 DOIUNSPECIFIED
http://www.agu.org/pubs/crossref/2001/2001GL013225.shtmlPublisherUNSPECIFIED
Additional Information:© 2001 American Geophysica Union. Received 26 March 2001; revised 03 July 2001; accepted 5 September 2001. We particularly thank S.-B. Yu for offering the GPS observations, M. Simons, J. Saleeby and two anonymous reviewers for comments on this manuscript. This work is supported in part by SCEC contract No. NSF EAR-8920136 and by the U.S. geological Survey under Contract No. 1HQGR0098. Contribution No. 8838, Division of Geological and Planetary Sciences, California Institute of technology, Pasadena, California 91125.
Group:Caltech Tectonics Observatory, Caltech Tectonics Observatory. Taiwan Tectonics and Seismicity
Funders:
Funding AgencyGrant Number
Southern California Earthquake Center (SCEC)UNSPECIFIED
NSFEAR-8920136
U.S. Geological Survey (USGS)1HQGR0098
Subject Keywords:Seismology: Earthquake parameters
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Caltech Division of Geological and Planetary Sciences8838
Caltech Tectonics ObservatoryUNSPECIFIED
Record Number:CaltechAUTHORS:20110111-102716913
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20110111-102716913
Official Citation:Ji, C., D. V. Helmberger, T. Alex Song, K. Ma, and D. J. Wald (2001), Slip distribution and tectonic implication of the 1999 Chi‐Chi, Taiwan, Earthquake, Geophys. Res. Lett., 28(23), 4379–4382, doi:10.1029/2001GL013225
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21693
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:25 Jan 2011 19:01
Last Modified:26 Dec 2012 12:50

Repository Staff Only: item control page