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Volume 22 Issue 2
Apr.  2011
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Investigation of the Co-seismic Gravity FieldVariations Caused by the 2004 Sumatra-Andaman Earthquake Using Monthly GRACE Data

  • Received Date: 2017-03-21
  • Gravity Recovery and Climate Experiment (GRACE) observations have been used to detect 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 gravitational 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 Texas Center for Space Research (UTCSR). The GRACE results agree well with the prediction by a dislocation model and are consistent with the results obtained by some previous scholars...
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通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Investigation of the Co-seismic Gravity FieldVariations Caused by the 2004 Sumatra-Andaman Earthquake Using Monthly GRACE Data

  • 1. Department of Geophysics, School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China
  • 2. Key Laboratory of Geodynamic Geodesy, Chinese Academy of Sciences, Wuhan 430077, China
  • 3. Department of Geophysics, School of Geodesy and Geomatics/Key Laboratory of Geospace Environment and Geodesy, Wuhan University, Wuhan 430079, China
  • 4. State Key Laboratory of Information Engineering inSurveying, Mapping and Remote Sensing, Wuhan 430079, China

Abstract: Gravity Recovery and Climate Experiment (GRACE) observations have been used to detect 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 gravitational 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 Texas Center for Space Research (UTCSR). The GRACE results agree well with the prediction by a dislocation model and are consistent with the results obtained by some previous scholars...

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