SURFACE FRACTURES OF WENCHUAN EARTHQUAKE(M8.0) IN BEICHUAN AND YINGXIU

SEISMOLOGY AND GEOLOGY ›› 2008, Vol. 30 ›› Issue (2): 355-358.

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SURFACE FRACTURES OF WENCHUAN EARTHQUAKE(M8.0) IN BEICHUAN AND YINGXIU

DENG Zhi-hui, YANG Zhu-en, CHEN Gui-hua, MA Wen-tao, SUN Qian

Institute of Geology, China Earthquake Administration, Beijing 100029, China

Received:2008-05-26 Revised:2008-05-27 Online:2008-06-20 Published:2009-08-16

汶川8.0级强震北川、映秀地表破裂现象

邓志辉, 杨主恩, 陈桂华, 马文涛, 孙谦

中国地震局地质研究所, 北京, 100029

作者简介:邓志辉,男,1962年生,1992年在国家地震局地质研究所大地构造物理专业毕业,获得博士学位,研究员,主要从事地震机理和地震预测方法研究,电话86-10-62009089,E-mail:deng6789@163.com.

Abstract

Abstract: After Wenchuan Earthquake(M8.0),surface fractures in Beichuan and Yingxiu were investigated.It was found that the earthquake deformation zone strikes in NE-SW.Earthquake fracture is characterized by thrust faulting with small amount of strike-slip movement.The compressional shortening is 3～4m in Beichuan and the left-lateral strike-slip displacement is 0.4～0.5m in Yingxiu.

Key words: Wenchuan Earthquake, surface fracture, displacement of fault

摘要： 在汶川8.0级大地震后,通过对北川和映秀2个极震区地表破裂的初步调查发现:北川、映秀地震形变带总体上为NE-SW向展布;地震破裂带以逆冲为主,兼小量走滑位移;北川地表形变带挤压缩短量为3～4m,映秀地表破裂左旋走滑位移为0.4～0.5m。

关键词: 汶川地震, 地表破裂, 断层位移

CLC Number:

P315.2

DENG Zhi-hui, YANG Zhu-en, CHEN Gui-hua, MA Wen-tao, SUN Qian. SURFACE FRACTURES OF WENCHUAN EARTHQUAKE(M8.0) IN BEICHUAN AND YINGXIU[J]. SEISMOLOGY AND GEOLOGY, 2008, 30(2): 355-358.

邓志辉, 杨主恩, 陈桂华, 马文涛, 孙谦. 汶川8.0级强震北川、映秀地表破裂现象[J]. 地震地质, 2008, 30(2): 355-358.

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SURFACE FRACTURES OF WENCHUAN EARTHQUAKE(M8.0) IN BEICHUAN AND YINGXIU

汶川8.0级强震北川、映秀地表破裂现象

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