球面非连续变形分析方法在伽师地震中的数值模拟研究
Spherical Discontinuous Deformation Analysis Method on Movement Numerical Simulation Forecast of Jiashi Earthquake Area
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摘要: 结合伽师强震区板块的非连续性变形运动特征,应用球面非连续变形分析方法,以大范围板块GPS监测数据为约束条件,对伽师地区强震前后的位移场、应力场的数值模拟与运动预测进行了系统的研究;通过断裂后的再次位移约束,全程模拟了伽师强震群地区从孕震到地震发生,直到再次聚集能量的过程,揭示了伽师强震群地区的地震活动规律。Abstract: Considering the movement character of discontinuous deformation in Jiashi strong earthquake swarm,the stress and distance fields of fore-and-aft earthquake are systemically studied using the spherical discontinuous deformation analysis method with the restriction condition of GPS observations.Through the second distance restriction,the process of the pregnant,happening and the congregation again of earthquake are numerical simulated,and the earthquake movement law in Jiashi area is opened out.
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