Fault geometry and slip distribution of the 1999 Chi-Chi, Taiwan earthquake imaged from inversion of GPS data

Details Fault geometry and slip distribution of the 1999 Chi-Chi, Taiwan earthquake imaged from inversion of GPS data Fault geometry and slip distribution of the 1999 Chi-Chi, Taiwan earthquake imaged from inversion of GPS data

Jun 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.2285j&link_type=abstract

Geophysical Research Letters, Volume 28, Issue 11, p. 2285-2288

Physics

26

Geodesy And Gravity: Crustal Movements-Intraplate, Geodesy And Gravity: Seismic Deformations, Seismology: Continental Crust, Tectonophysics: Continental Neotectonics

Scientific paper

GPS measurements of coseismic displacements from the 1999, Chi-Chi, Taiwan earthquake are modeled using elastic dislocation theory. We find that a single fault plane cannot fit the data, but rather a curved fault surface consisting of multiple segments dipping 20-25° best fits the observations. The model fault exhibits reverse and left-lateral slip on a 75 km long N-S trending segment and reverse and right-lateral slip on a 25 km E-W trending segment at the northern end of the rupture. The 21° dipping E-W segment is inconsistent with previous interpretations of high angle tear faulting.

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