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Title: Analysis of the crust deformations before and after the 2008 Wenchuan Ms8.0 earthquake based on GPS measurements
Authors: Wu, J
Liu, R
Chen, YQ 
Tang, HWC 
Meng, G
Dang, Y
Issue Date: 2011
Source: International journal of geophysics, v. 2011, 802346, p.1-7
Abstract: We use the movement velocities of GPS stations in western Sichuan province, China, to determine the distribution of horizontal strain accumulation before the 2008 Wenchuan Ms8.0 earthquake with a piecewise approximation approach and the coseismic displacements to determine the fault slips of the earthquake with an inversion analysis method. The results show that the distribution of the principal strain rates is strongly related to the active faults in the region, but along Longmenshan fault where the earthquake occurred, the strain rates are much lower than the others. The fault slip distribution shows mainly a thrusting with dextral striking, and the fault slips in the upper parts of the fault plane are in general bigger. Using the current strain accumulation rate and the released energy by the earthquake, we predict such a big earthquake in Longmenshan fault zone will happen in 460 to 1380 years.
Keywords: Wenchuan Earthquake
Global positioning system
Fault zones
Faults (Geology)
Earth movement
Publisher: Hindawi Publishing Corporation
Journal: International journal of geophysics 
ISSN: 1687-885X
EISSN: 1687-8868
DOI: 10.1155/2011/802346
Rights: Copyright © 2011 Jicang Wu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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