Co-seismic rupture and displacement in the Xiaoyudong area produced by the 2008 Wenchuan earthquake, China, and its mechanism

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Title:	Co-seismic rupture and displacement in the Xiaoyudong area produced by the 2008 Wenchuan earthquake, China, and its mechanism
Authors:	張中白;Tan, Xi-Bin;Yuan, Ren-Mao;Xu, Xi-Wei;Chen, Gui-Hua;Chang, Chung-Pai
Contributors:	太空及遙測研究中心
Keywords:	China;Displacement;Faults;Footwalls;Rupture;Seismic phenomena;Slip;Walls
Date:	2013-06-01
Issue Date:	2026-04-21 14:25:52 (UTC+8)
Publisher:	State Seismology Administration
Abstract:	摘要： The M(W) 7.9 Wenchuan, China, earthquake is a large oblique reverse slip shock, whose main fault is dominated by reverse slip with right-lateral strike-slip component. It generated one of the longest and most complicated surface ruptures, and to many of the phenomena, we haven't had an appropriate interpretation or a common understanding, e.g. on the 7 km-long NW-trending Xiaoyudong Fault and the coinstantaneous fracture on the two parallel thrust faults which are 11 km apart on the north of Xiaoyudong area. Field investigation in the Xiaoyudong area shows clear co-seismic rupture and displacement, and on these bases, we analyzed the mechanism of the surface rupture in the Xiaoyudong area. Our study indicates that the change of attitude of Beichuan-Yingxiu Fault (BYF), that is, the ca. 3.5 km step-over in the west of the Xiaoyudong area, is the primary cause of the above complex phenomena. Specific mechanisms are as follows: 1) The dextral strike-slip of the BYF results in compressional uplift in the left-res 出版日期： 2013-06-01 出處： Dìzhèn dìzhì, 2013-06, Vol.35 (2), p.247-260 資源來源： Alma/SFX Local Collection 識別號： ISSN: 0253-4967 識別號： DOI: 10.3969/j.issn.0253-4967.2013.02.005
Appears in Collections:	[Center for Space and Remote Sensing Research ] journal & Dissertation

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