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MECHANISM ANALYSIS OF VERTICAL UPLIFT OF CRUST IN THE WEST OF LONGMENSHAN BEFORE WENCHUAN Ms8.0 EARTHQUAKE
汶川地震震前龙门山以西地壳垂直隆升机理分析

Keywords: crust uplift:low velocity body:viscoelastic Finite Element Method(FEM):GPS velocity,Chuanxi plateau
地壳隆升
,低速体,黏弹性有限元,GPS速度,川西高原

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Abstract:

The mechanism of the vertical uplift of crust in the west of Longmenshan before Wenchuan Ms8.0 earthquake has been debated through constructing the 2-D FEM model for the profile across Longmenshan fault,which is based on the velocity field that had calculated from the GPS observations and the result of seismic tomography obtained by Wu Jiangping et al.In addition,the effect of crustal inhomogeneity on the vertical uplift has been discussed as well.We concluded that the existence of the low velocity anomaly ...

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