Investigation of the Co-seismic Gravity Field Variations Caused by the 2004 Sumatra-Andaman Earthquake Using Monthly GRACE Data |
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| Authors: | Li Jin |
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| Institution: | Li Jin Department of Geophysics,School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China,Key Laboratory of Geodynamic Geodesy,Chinese Academy of Sciences,Wuhan 430077,China Shen Wenbin* Department of Geophysics,School of Geodesy and Geomatics/Key Laboratory of Geospace Environment and Geodesy,State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing |
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| Abstract: | Gravity Recovery and Climate Experiment(GRACE) observations have been used to de-tect the co-seismic and post-seismic gravity field variations due to the Mw=9.3 Sumatra-Andaman earthquake that occurred on December 26,2004.This article focuses on investigating some gravita-tional effects caused by this huge earthquake.We computed the geoid height changes,the equivalent water height(EWH) changes,and the gravity changes using the GRACE Level-2 monthly spherical harmonic(SH) solutions released by University of ... |
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| Keywords: | satellite geodesy time-variable gravity gravity gradient change dislocation model Sumatra-Andaman earthquake |
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