English | 武汉大学 | 院长信箱
点击展开菜单
科研论文
当前位置: > 科学研究 > 科研论文 >

[SCI]Crustal strain in the Longmenshan region considering fault locking during ten years before the 2008 Wenchuan earthquake

时间:2017-05-03 来源:未知 点击:
作者:Xiao, ZH (Xiao Zhuo-Hui)[ 1 ] ; Xu, CJ (Xu Cai-Jun)[ 1,2,3 ] ; Jiang, GY (Jiang Guo-Yan)[ 3 ] ; Wen, YM (Wen Yang-Mao)[ 1,2,3 ]
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
: 60 : 3 : 953-961
DOI: 10.6038/cjg20170310
出版年: MAR 2017
摘要
In this study, the locking degree of the Longmenshan fault and the strain rates in the Longmenshan region before the 2008 Wenchuan earthquake are inverted from the GPS horizontal velocity field between 1997 and May, 2008 using the negative dislocation theory. The inversion results show that the Longmenshan fault was nearly completely locked before the Wenchuan M(w)7.9 earthquake. The mean coupling degree of the Longmenshan fault from the surface to 25 km depth is 0. 972 +/- 0. 222, and the slip deficit is about 3 mm "a'. The detachment of Longmenshan that was nearly fully locked provided the energy for the Wenchuan earthquake rupture at depth. With consideration of the fault coupling, crustal strain slowly accumulated near the fault, more obviously at the northwest of the fault. The principal tensile strain rates near the fault range from 3. 4 to 9. 6 nanostrain . a(-1) and the principal compressive strain rates range from -2. 5 to 7. 1 nanostrain . a-1, respectively.
关键词
作者关键词:GPSFault lockingStrain rateLongmenshan faultNegative dislocation theory
KeyWords Plus:PRESENT-DAY KINEMATICSBAYAN HAR BLOCKM(S)8.0 EARTHQUAKE;TECTONIC IMPLICATIONTIBETAN PLATEAUACTIVE BLOCKSSLIP RATESGPS DATA;DEFORMATIONZONE
作者信息
通讯作者地址Xu, CJ (通讯作者)

http://images.webofknowledge.com/WOKRS524B8/images/zh_CN/expand.gif Wuhan Univ, Sch Geodesy & Geomat, Wuhan 430079, Peoples R China.
通讯作者地址Xu, CJ (通讯作者)
http://images.webofknowledge.com/WOKRS524B8/images/zh_CN/expand.gif Wuhan Univ, Minist Educ, Key Lab Geospace Environm & Geodesy, Wuhan 430079, Peoples R China.
地址:
http://images.webofknowledge.com/WOKRS524B8/images/zh_CN/expand.gif [ 1 ] Wuhan Univ, Sch Geodesy & Geomat, Wuhan 430079, Peoples R China
http://images.webofknowledge.com/WOKRS524B8/images/zh_CN/expand.gif [ 2 ] Wuhan Univ, Minist Educ, Key Lab Geospace Environm & Geodesy, Wuhan 430079, Peoples R China
http://images.webofknowledge.com/WOKRS524B8/images/zh_CN/expand.gif [ 3 ] Collaborat Innovat Ctr Geospatial Technol, Wuhan 430079, Peoples R China
电子邮件地址:zhhxiao@whu.edu.cncjxu@sgg.whu.edu.cn
出版商
SCIENCE PRESS, 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
类别 / 分类
研究方向:Geochemistry & Geophysics
Web of Science 类别:Geochemistry & Geophysics
文献信息
文献类型:Article
语种:Chinese
入藏号: WOS:000396386700010
ISSN: 0001-5733
期刊信息
·         Impact Factor (影响因子): 0.984