The 2008 Nura Mw6.7 earthquake: A shallow rupture on the Main Pamir Thrust revealed by GPS and In SAR

查看全文 作　　者：Qiao [1]Xuejun;Wang [2,3]Qi;Yang [1]Shaomin;Li [4]Jie;Zou [2,3]Rong;Ding [2,3]Kaihua

机构地区：[1]Key Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration;[2]Institute of Geophysics and Geomatics, China University of Geosciences;[3]Planetary Science Institute, China University of Geosciences;[4]Earthquake Administration of the Xinjiang Uygur Autonomous Region

出　　处：《Geodesy and Geodynamics》索引2015年第6卷第2期,共10页

基　　金：The study is funded by the National Natural Science Foundation of China(41274027,41274037,41374030 and 41474097) 摘　　要：The 2008 Nura Mw6.7 earthquake occurred in front of the Trans-Alai Range, central Asia.We present Interferometric Synthetic Aperture Radar(In SAR) measurements of its coseismic ground deformation that are available for a major earthquake in the region.Analysis of the In SAR data shows that the earthquake ruptured a secondary fault of the Main Pamir Thrust for about 20 km. The fault plane striking N46 E and dipping 48 SE is dominated by thrust slip up to 3 m, most of which is confined to the uppermost 2e5 km of the crust, similar to the nearby 1974 Mw7.0 Markansu earthquake. The elastic model of interseismic deformation constrained by GPS measurements suggests that the two earthquakes may have resulted from the failures of two high-angle reverse faults that are about 10 km apart and rooted in a locked de collement at depths of 5e6 km. The elastic strain is built up by a freely creeping de collement at about 16 mm/a. 关键词：地震测量 InSAR GPS测量帕米尔推力合成孔径雷达干涉测量显示断裂

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The 2008 Nura Mw6.7 earthquake: A shallow rupture on the Main Pamir Thrust revealed by GPS and In SAR

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