Volume 36 Issue 4
Apr.  2011
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XU Caijun, JIANG Guoyan, WANG Hao, WEN Yangmao. Analyzing InSAR Results Using GIS and Its Application on the Coseismic Interpretation of Mw7.9 Wenchuan Earthquake[J]. Geomatics and Information Science of Wuhan University, 2011, 36(4): 379-383.
Citation: XU Caijun, JIANG Guoyan, WANG Hao, WEN Yangmao. Analyzing InSAR Results Using GIS and Its Application on the Coseismic Interpretation of Mw7.9 Wenchuan Earthquake[J]. Geomatics and Information Science of Wuhan University, 2011, 36(4): 379-383.
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Analyzing InSAR Results Using GIS and Its Application on the Coseismic Interpretation of Mw7.9 Wenchuan Earthquake

  • 1 School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China

Funds: 国家公益(地震)行业科研专项基金资助项目(200808080)；国家自然科学基金资助项目(408740034107400741021061)；国家863计划资助项目(2009AA12Z317)；国家教育部高等学校博士点专项基金资助项目(20090141110055)
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  • Received Date: March 10, 2011
  • Published Date: April 04, 2011
    Graphical Abstract
    • Abstract
  • InSAR results' analysis assisted with GIS can give more comprehensive interpretation on surface deformation mechanism.In this paper,we present the methods to clip,split and merge SAR images with the help of GIS.Besides,the profile and contour analysis to SAR images are illustrated.In order to demonstrate the effectiveness on interpreting earthquake deformation mechanism using the InSAR results assisted with GIS,we analyze the Mw7.9 Wenchuan earthquake as follows.First,the seismic fault surface trace is extracted according to the InSAR range offset and coseismic deformation field.Second,through the comparison between the LOS deformation field obtained by geophysical forward using dislocation model and the InSAR coseismic deformation field,the whole and hanging wall corrections of InSAR deformation field are obtained,with which the more actual coseismic deformation are got by correction using GIS.Finally,more comprehensive analysis and interpretation on the characteristics of coseismic deformation are presented by using the 2D/3D coseismic deformation field,interferograms and profile analysis.
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