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《Chinese Journal of Geophysics》 2013-08
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Co-seismic slip distribution of 2010 Darfield,New Zealand M_w7.1 earthquake inverted using InSAR measurements

LUO Xu-Wei1,SUN Jian-Bao2,SHEN Zheng-Kang1,2*,Yo Fukushima3 1 Peking University,School of Earth and Space Science,Beijing 100871,China 2 State Key Lab.of Earthquake Dynamics,Institute of Geology,China Earthquake Administration,Beijing 100029,China 3 Disaster Prevention Research Institute,Kyoto University,Uji,Kyoto,Japan  
The 2010 Darfield Mw7.1 earthquake occurred on a previously unknown fault zone,which absorbs only a minor portion of relative plate motion between the Pacific and Australia plates there.We attempt to obtain detailed information about fault geometry and rupture distribution of this event using InSAR data.Combining geological field survey observations with SAR displacement fringes,correlation,and range and azimuth offsets,we identify four faults which slipped during co-seismic rupture,of which seven segments are distinguished with various strikes and dip angles.Our inversion results show that the slip is concentrated in the upper 10 km depth.Slips along the Greendale fault(including four segments) are predominantly dextral with a maximum up to 8.5 m.The fault coinciding with the earthquake hypocenter slipped reversely up to ~5.1 m.The third fault located west of the Greendale fault also reversely ruptured,with a peak of ~3.5 m.Slip on the fourth fault located north of the Greendale fault and east of the second fault is minor,no more than 1.9 m.We also compare the top 1 km slip along the Greendale fault with surface rupture distribution,and find very good agreement between the two.The maximum surface slip is about 6 m,located about 26 km east of the west end of the fault surface rupture.The total seismic moment release is 5.0×1019N·m,equivalent to an Mw=7.12 event.Main features of InSAR data are well recovered,the residuals near the epicenter are less than 20 cm,confirming good data fitting of our fault slip model.Based on this fault slip model we calculate about 1 bar of Coulomb stress change at the hypocenter of the 2011 Mw6.3 Christchurch earthquake,located about 30 km east of the Darfield earthquake.
【Fund】: 国家自然科学基金项目(41090284)资助;; 中国地震局地质研究所公益研究项目(JB-11-06)的支持
【CateGory Index】: P315
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【Citations】
Chinese Journal Full-text Database 1 Hits
1 SUN Jian-Bao1, XU Xi-Wei2, SHEN Zheng-Kang2, SHI Yao-Lin1, LIANG Fang31 Earth Science School, Graduate University of Chinese Academy of Sciences, Beijing 100049,China2 Institute of Geology, China Earthquake Administration, Beijing 100029,China3 Beijing Earthquake Administration, Beijing 100080,China;Parameter inversion of the 1997 Mani earthquake from INSAR co-seismic deformation field based on linear elastic dislocation model-Ⅰ. Uniform slip inversion[J];Chinese Journal of Geophysics;2007-04
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 YAN Zhen-zhen1,SHI Yao-lin2,FAN Xiang-tao1,DU Xiao-ping1(1.Center for Earth Observation and Digital Earth,CEA,Beijing 100094,China;2.Graduate School of CAS,Beijing 100049,China);Study on Optimal SAR Band for Mapping Co-seismic Deformation[J];Earthquake;2011-03
2 Liu Ning and Zhang Yongzhi(College of Geology Engineering and Geomatics,Chang'an University,Xi'an710054);FAULT PARAMETER INVERSION WITH ANT COLONY ALGORITHM BY DISLOCATION MODEL[J];Journal of Geodesy and Geodynamics;2009-01
3 Qiao Xuejun1),You Xinzhao2),Yang Shaomin1),Wang Qi1) and Du Ruilin1)(1)Institute of Seismology,CEA,Wuhan 4300712)National Earthquake Infrastructure Service,Beijing 100036);STUDY ON DISLOCATION INVERSION OF Ms6.6 DAMXUNG EARTHQUAKE AS CONSTRAINED BY InSAR MEASUREMENT[J];Journal of Geodesy and Geodynamics;2009-06
4 ZHANG Xiao-liang1,LU Ming-yong2,JIANG Zai-sen3,WANG Shuang-xu1,ZHU Yi-qing1(1.Second Monitoring and Application Center,CEA,Xi'an 710054,China;2.China Center for Earthquake Disaster Emergency and SAR,Beijing 100049,China;3.Institute of Earthquake Prediction,CEA,Beijing 100036,China);Three-dimensional dynamic simulation and aftershock explanation of the Mani(M_s=7.9)earthquake[J];Progress in Geophysics;2008-05
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6 CAO Hui1,2,CHEN Guo-jin1,2,WU Yong-shuan1,ZHANG Ya-hong1,GUO Jian1 (1.Sinopec Geophysical Research Institute,Nanjing 210014,China; 2.Sinopec Key Laboratory of Geophysics,Nanjing 210014,China);review of the seismic virtual source method[J];Progress in Geophysics;2012-03
7 FENG Wan-Peng~1,XU Li-Sheng~(1*),XU Zhong-Huai~1,LI Zhen-Hong~2,LI Chun-Lai~1,ZHAO Hua~11 Institute of Geophysics,China Earthquake Administration,Beijing 100081,China2 Department of Geographical and Earth Sciences,University of Glasgow,Glasgow G 12 8QQ,United Kingdom;Source parameters of the 2008 G(?)rz(?) M_w6.4 and M_w5.9 earthquakes from InSAR measurements[J];Chinese Journal of Geophysics;2009-04
8 ZHANG Guo-Hong~1,QU Chun-Yan~1,SONG Xiao-Gang~1,WANG Chi-Sheng~(1,2), SHAN Xin-Jian~1,Hu Jyr-Ching~3 1 State Key Laboratory of Earthquake Dynamics,Institute of Geology,China Earthquake Administration,Beijing 100029,China 2 Institute of Remote Sensing Applications,Chinese Academy of Sciences,Beijing 100101,China 3 Department of Geosciences,National Taiwan University,Taipei 10617,China;Slip distribution and source parameters inverted from co-seismic deformation derived by InSAR technology of Wenchuan M_w7.9 earthquake[J];Chinese Journal of Geophysics;2010-02
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China Proceedings of conference Full-text Database 2 Hits
1 TAO Yi,FU Li-Yun,SUN Wei-Jia,SUN Qiu-Xia (Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China);A review of seismic interferometry[A];[C];2011
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【Secondary Citations】
Chinese Journal Full-text Database 3 Hits
1 SHEN ZHENGKANG 1,2 WAN YONGGE 1,3 GAN WEIJUN 1 ZENG YUEHUA 4 REN QUN 1 1 Institute of Geology, China Seismological Bureau, Beijing, 100029, China 2 Dept of Earth and Space Sciences,University of California, Los Angeles, CA 90095-1567, USA 3 College of Disaster Prevention Technique, Yanjiao, Beijing, 101601, China 4 Seismological Lab, University of Nevada, Reno, NV 89577, USA;VISCOELASTIC TRIGGERING AMONG LARGE EARTHQUAKES ALONG THE EAST KUNLUN FAULT SYSTEM[J];Chinese Journal of Geophysics;2003-06
2 SUN Jian-Bao1, XU Xi-Wei2, SHEN Zheng-Kang2, SHI Yao-Lin1, LIANG Fang31 Earth Science School, Graduate University of Chinese Academy of Sciences, Beijing 100049,China2 Institute of Geology, China Earthquake Administration, Beijing 100029,China3 Beijing Earthquake Administration, Beijing 100080,China;Parameter inversion of the 1997 Mani earthquake from INSAR co-seismic deformation field based on linear elastic dislocation model-Ⅰ. Uniform slip inversion[J];Chinese Journal of Geophysics;2007-04
3 SHAN Xin-jian ZHANG Guo-hong(State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China);AN ANALYSIS OF DYNAMIC EVOLUTION OF PRESEISMIC INTERFEROMETRIC DEFORMATION FIELDS IN SEISMIC AREA[J];Seismology and Geology;2006-03
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