Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/43757
Title: Coseismic and postseismic slip models of the 2011 Van earthquake, Turkey, from InSAR, offset-tracking, MAI, and GPS observations
Authors: Wang, C
Ding, X 
Li, Q
Shan, X
Zhu, W
Guo, B
Liu, P
Keywords: Coseismic
Postseismic
SAR geodesya
Slip model
Van earthquake
Issue Date: 2015
Publisher: Pergamon Press
Source: Journal of geodynamics, 2015, v. 91, p. 39-50 How to cite?
Journal: Journal of geodynamics 
Abstract: We derived the coseismic and postseismic slip models of the 2011 Van earthquake from multi-sourcegeodetic datasets, including interferometric synthetic aperture radar (InSAR), multi-aperture InSAR(MAI), offset-tracking, and GPS measurements. The constrained least squares algorithm and Laplaciansmoothing were used to estimate and regularize the slip distribution. The coseismic slip model suggestedtwo nearly W-E striking segment faults breaking during the Van event. Two main slip concentrationswere found to to be located at depths ranging from 7 km to 20 km. The estimated moment reached 6.08 × 1019 Nm (equal to an Mw 7.19 event). A stress change analysis showed that the main shock imposedan up to ~5 bars stress load on the causative fault of the 9 November aftershock, implying a triggeringmechanism between the two events. The postseismic slips of the Van earthquake were dominated byshallow left-lateral and deep thrust components. The slips distributed in most of the unruptured area ofthe fault plane. The accumulated postseismic moment reached 2.04 × 1019 Nm, which was about 34% ofthe main shock moment. We conclude that the future seismic hazard will be relatively low in this area.
URI: http://hdl.handle.net/10397/43757
ISSN: 0264-3707
DOI: 10.1016/j.jog.2015.08.006
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