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Far-field deformations caused by the 2004 Sumatra earthquake 被引量:1

Far-field deformations caused by the 2004 Sumatra earthquake
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摘要 Theoretical horizontal displacements caused by the 2004 Sumatra earthquake in the Sichuan-Yunnan area have been calculated according to a spherical dislocation theory and an earthquake-fault model. The results show that the theoretical displacements are basically consistent with the GPS observations in situ. On this basis,we have calculated the co-seismic displacements, strains, changes of gravity and geoid of the whole Earth, including China mainland and vicinity, caused by this earthquake. Key wards: Theoretical horizontal displacements caused by the 2004 Sumatra earthquake in the Sichuan-Yunnan area have been calculated according to a spherical dislocation theory and an earthquake-fault model. The results show that the theoretical displacements are basically consistent with the GPS observations in situ. On this basis,we have calculated the co-seismic displacements, strains, changes of gravity and geoid of the whole Earth, including China mainland and vicinity, caused by this earthquake. Key wards:
出处 《Geodesy and Geodynamics》 2010年第1期70-78,共9页 大地测量与地球动力学(英文版)
基金 supported by Basic Research Foundation from Institute of Earthquake Science,CEA(0210240101)
关键词 the 2004 Sumatra earthquake dislocation theory DISPLACEMENT STRAIN gravity change far-field deformation the 2004 Sumatra earthquake dislocation theory displacement strain gravity change far-field deformation
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