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http://hdl.handle.net/10397/6339
Title: | Coseismic fault slip of the 2008 M[sub w] 7.9 Wenchuan earthquake estimated from InSAR and GPS measurements | Authors: | Feng, G Hetland, EA Ding, X Li, Z Zhang, L |
Issue Date: | Jan-2010 | Source: | Geophysical research letters, Jan 2010, v. 37, no. 1, L01302 | Abstract: | We infer co-seismic fault slip during the 2008 M[sub w] 7.9 Wenchuan earthquake from interferometric synthetic aperture radar (InSAR) and GPS observations of ground deformation. We use ALOS/PALSAR data from ascending orbits on six tracks, and we do not use data that are strongly affected by ionospheric perturbations. We use a fault model composed of three planar fault segments of the Beichuan fault, and one planar segment representing the parallel Pengguan fault. Maximum thrust-slip is up to 6.7 m near the surface, and occurs in two locations, near Yingxiu in the south and Beichuan in the center of the rupture. Maximum strike-slip is over 4 m, and occurs near Pingtong and Nanba along the northern end of the rupture. We find that the ratio of coseismic thrust- to strike-slip on the Beichuan fault decreases from 1.5 to 0.7 from the SW to the NE. | Keywords: | Coseismic slip InSAR Earthquake |
Publisher: | John Wiley and Sons | Journal: | Geophysical research letters | ISSN: | 0094–8276 (print) 1944–8007 (online) |
DOI: | 10.1029/2009GL041213 | Rights: | Copyright 2010 by the American Geophysical Union. |
Appears in Collections: | Journal/Magazine Article |
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Feng_coseismic_fault_slip.pdf | 303.9 kB | Adobe PDF | View/Open |
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