Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/9949
Title: Pre- and co-seismic ground deformations of the 1999 Chi-Chi, Taiwan earthquake, measured with SAR interferometry
Authors: Liu, GX
Ding, XL 
Li, ZL 
Li, ZW
Chen, YQ 
Yu, SB
Keywords: Chi-Chi earthquake
Displacement field
Fault model
GPS
SAR interferometry
Issue Date: 2004
Publisher: Pergamon Press
Source: Computers & geosciences, 2004, v. 30, no. 4, p. 333-343 How to cite?
Journal: Computers & geosciences 
Abstract: The 1999 Mw = 7.6 Chi-Chi earthquake was the strongest inland earthquake in Taiwan in the 20th century. Five radar images acquired with the C-band SARs onboard the ERS-1/2 satellites are combined to study the pre- and co-seismic surface deformations in the epicentral area of about 1500 km2. The pre-seismic interferograms over 2-3 years show consistent fringe patterns that are equivalent to LOS displacement variations of up to about 32 mm. The deformations are likely caused by the east-west tectonic compression in the region. The short-term co-seismic interferograms show clear arc-shaped fringe patterns of about 10 fringes, equivalent to displacement variations of about 28.3 cm. The co-seismic deformation results fit well with both GPS measurements and a simulated interferogram computed based on a fault-dislocation model. This study demonstrates the capability of short-wavelength InSAR systems for monitoring ground deformations of flat terrain in tropical regions.
URI: http://hdl.handle.net/10397/9949
ISSN: 0098-3004
EISSN: 1873-7803
DOI: 10.1016/j.cageo.2003.08.011
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