Volume 37 Issue 12
Dec.  2012
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XU Caijun, HE Ping, WEN Yangmao, ZHANG Lei. Coseismic Deformation and Slip Distribution for 2011 Tohoku-Oki Mw 9.0 Earthquake:Constrained by GPS and InSAR[J]. Geomatics and Information Science of Wuhan University, 2012, 37(12): 1387-1391.
Citation: XU Caijun, HE Ping, WEN Yangmao, ZHANG Lei. Coseismic Deformation and Slip Distribution for 2011 Tohoku-Oki Mw 9.0 Earthquake:Constrained by GPS and InSAR[J]. Geomatics and Information Science of Wuhan University, 2012, 37(12): 1387-1391.
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Coseismic Deformation and Slip Distribution for 2011 Tohoku-Oki Mw 9.0 Earthquake:Constrained by GPS and InSAR

  • 1 School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China;2 Department of Land Surveying and Geo-Informatics,The Hong Kong Polytechnic University,Kowloon,Hong Kong,China

Funds: 国家自然科学基金资助项目(41074007);;国家创新群体科学基金资助项目(41021061);;高等学校博士学科点专项科研基金资助项目(20110141130010,20090141110055);;中央高校基本科研业务费专项资金资助项目(201121402020007,3101036,114035);;国土环境与灾害监测国家测绘局重点实验室开放基金资助项目(LEDM2010B04)
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  • Received Date: October 21, 2012
  • Published Date: December 04, 2012
    Graphical Abstract
    • Abstract
  • A Mw 9.0 earthquake occurred in the Tohoku-Oki of Japan in 2011.The coseismal deformation observation from GPS and InSAR meanings were used to inverse the slip distribution of the earthquake.Firstly,six ascending ALOS/PALSAR tracks and three descending Envisat/ASAR tracks that cover most of northeastern Japan were processing by two-pass interferometric synthetic aperture radar(InSAR) to obtain acoseismic deformation results,which are calibrated by GPS data.Secondly,the rectangle dislocation models in elastic half-space were used to derive the kinematic characteristic of the earthquake fault combining with GPS and InSAR data.The inversion result indicates that the fault slip concentrates mainly in the depth between 40 km and 50 km,the maximum slip is about 50.3 m,the geodetic moment is 3.197×1022 N·m(Mw 8.94).
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