Coseismic Deformation and Postseismic Deformation Mechanism Yutian MS7.3 Earthquake
Abstract On March 21th, 2008, a MS7.3 earthquake occurred in Yutian of Xinjiang. In this paper, InSAR technology is used to obtain the coseismic and postseismic deformation. The inversion of coseismic slip distribution shows that the largest slip achieves 5.4 m and that the slip is dominant in the south of the fault, near 0-5 km depth beneath the ground surface. The earthquake is a normal faulting event with a slight sinistral strike-slip component. Postseismic deformation indicates that there are differences in movement in the north section of seismogenic fault, and the largest cumulative deformation difference is about 15 cm in 782 d after the earthquake. According to the further analysis, the afterslip of postseismic fault may be the main mechanism for deformation. The degree of postseismic afterslip is relatively small in two years and the slip region decreases greatly and for the most part is located in shallow areas. The energy of north fault is relatively exhaustive released, while there is little energy remaining in south part of the fault.
Key words :
Yutian earthquake
InSAR
coseismic deformation
postseismic deformation
afterslip
Cite this article:
SUN He,JI Lingyun,ZHU Liangyu et al. Coseismic Deformation and Postseismic Deformation Mechanism Yutian MS7.3 Earthquake[J]. jgg, 2016, 36(12): 1052-1055.
SUN He,JI Lingyun,ZHU Liangyu et al. Coseismic Deformation and Postseismic Deformation Mechanism Yutian MS7.3 Earthquake[J]. jgg, 2016, 36(12): 1052-1055.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2016/V36/I12/1052
[1]
ZHANG Kexin,TIAN Chongrui,JIAO Jian,ZENG Qiming. Research on Smoothing in InSAR Ionospheric Correction [J]. jgg, 2022, 42(1): 29-34.
[2]
LIANG Shichuan,QU Wei,CHEN Hailu,GAO Yuan,LI Jiuyuan,LI Da. Source Parameter Inversion and Seismogenic Tectonic of the Nyima MW 6.3 Earthquake in Tibet on July 23, 2020 Based on InSAR [J]. jgg, 2022, 42(1): 71-76.
[3]
LI Honghui,HOU Zhandong,LI Shujian. Analysis of Characteristics and Causes of Land Subsidence in Changzhou by Time Series InSAR [J]. jgg, 2022, 42(1): 54-58.
[4]
ONG Qi,GAO Ertao,YU Hangming,LAN Yanping. Research on the Sensitivity of Deep Slip Inversion for Earthquake Fault Slip Constrained by InSAR and GPS Geodetic Deformation Data [J]. jgg, 2022, 42(1): 59-64.
[5]
ZHANG Lele,LIU Bo,JIA Shili,CHANG Yinghao,WANG Jiabing,WEI Zengming. Reconstruction of Time Series Three-Dimensional Multi-Level Deformation in Mining Area Based on Single OT DInSAR Pair [J]. jgg, 2021, 41(9): 886-894.
[6]
YANG Xing,XIAO Huaiqian,HOU Miao,MIAO Rongrong,WENG Songgan,ZHANG Zexiong. Feasibility Study on the Vertical Displacement Monitoring Method of Jiangsu Sluice Based on InSAR [J]. jgg, 2021, 41(9): 895-898.
[7]
YAO Weizheng,XU Keke,ZHU Xulin,SHAO Zhenhua. Postseismic Deformation and Dynamic Mechanism Associated with the 2015 MW 7.8 Nepal Earthquake from GPS Observation [J]. jgg, 2021, 41(8): 833-840.
[8]
PAN Guangyong,WANG Xin,ZHANG Jingfa,LIU Guolin,WANG Jiqiang,HOU Zhigang,LI Bingquan. Interpretation and Analysis of Multi-Source Remote Sensing Fault Structure in Taiyangshan Fault Zone and Surrounding Areas [J]. jgg, 2021, 41(7): 754-758.
[9]
ZHONG Chuhan,WANG Qiang,WANG Xiaying,ZHANG Shuangcheng,NIU Yufen. Surface Displacement Monitoring and Inducing Factors Analysis of Dongying City Base on InSAR [J]. jgg, 2021, 41(7): 727-731.
[10]
LIU Zhijun,TAN Kai,WANG Qi,WANG Lei,ZHANG Jian,ZHAO Bin,QIAO Xuejun. Numerical Simulation Analysis of After-Slip and Viscoelastic Relaxation after the Wenchuan Earthquake [J]. jgg, 2021, 41(6): 577-583.
[11]
NI Yipeng,NIE Zhaosheng,XIONG Wei,CHEN Wei,YU Pengfei. Coseismic Rupture Model of the 2018 Xaitongmoin MW 5.8 Earthquake Constrained by Sentinel-1 SAR Data [J]. jgg, 2021, 41(6): 589-594.
[12]
CHEN Weiran,ZHU Liangyu,SUN He,ZHANG Wenting,WANG Ying. The Monitoring and Analysis of Current Crustal Movement of Gyaring Co Fault Based on InSAR [J]. jgg, 2021, 41(5): 478-483.
[13]
DAI Zhihong,LU Peng,ZHANG Zhifang,WANG Xiaolong,XU Guo,DONG Jianming. Surface Subsidence Monitoring and Analysis of Nanning Based on PS-InSAR Technology [J]. jgg, 2021, 41(5): 491-496.
[14]
FU Zhihao,WANG Xin,ZHANG Jingfa. Co-Seismic Deformation Measurement of 2019 MW 6.4 and MW 7.1 California Earthquakes Base on Optical Remote Sensing Images [J]. jgg, 2021, 41(5): 506-510.
[15]
YU Shuyuan,YANG Yuanyuan,ZHANG Pengfei,SUN Jun,LUO Jiaji. Monitoring Land Subsidence and Fault Activity in Hefei City Based on MT-InSAR [J]. jgg, 2021, 41(4): 398-402.