Citation: | WANG Lian-jie, CUI Jun-wen, WANG Wei, QIAO Zi-jiang, SUN Dong-sheng, ZHAO Wei-Hua. NUMERICAL MODELING FOR MECHANISM OF YUSHU MS7.1 EARTHQUAKE[J]. Journal of Geomechanics, 2010, 16(2): 137-145. |
In this paper, strain softening model is used to establish the modeling for Yushu MS7.1 earthquake. The results shows that Yushu MS7.1 earthquake occurred as a combination of northward compressing of the Indian Plate and southeastward compressing of the Qinghai-Tibet Plateau. The stress drop, energy release amount, the magnitude of dislocation of fault, and earthquake recurrence intervals are given by the modeling. The modeling results show a good match with the geologic survey in the field.
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Stress field around the Yushu area
Velocity field by GPS around the Yushu area
Model for calculationa
Mesh of model(red is fault plane)
Sudden sliding of faultwhen the earthquake happened
Energy density curvewhen the earthquake happened
Stress drop for the earthquake
Fault displacement along strike caused by the earthquake
The displacements on both sides of fault