【摘要】 选择了29个浅源地震的滑动分布,用来研究近场强地震动预测中浅源地震的凹凸体模型特征.将凹凸体分成三种类型研究:所有凹凸体,最大凹凸体和其它凹凸体.根据凹凸体的数量将凹凸体模型分为三种模型:所有凹凸体,单凹凸体和多凹凸体.每种模型中,根据断层类型将断层分成三类:所有断层,倾滑断层和走滑断层.用最小二乘法建立了三种凹凸体模型中不同断层类型的凹凸体各参数与矩震级和相应断层参数之间的关系式.同时也建立了不同断层类型的地震破裂初始点位置参数与矩震级之间的关系式.系统地描述了近场强地震动预测中浅源地震的凹凸体模型特征.更多还原

【Abstract】 The slip distributions of 29 shallow earthquakes were selected to characterize a shallow earthquake asperity model for predicting near field strong ground motion.Asperity was classified into three types: all-asperity,the maximum asperity,and other-asperity.Based on the number of asperities on the fault plane,the asperity model was classified into three models: all-asperity,single-asperity and multi-asperity models.In each model,fault was classified into three types: all-fault,dip-slip fault and strike-slip fault.Relationships between asperity parameters and moment magnitude and relationships between asperity parameters and corresponding fault parameters for various fault types in three asperity models were derived.The relationships between parameters of the rupture starting point in the seismic source and moment magnitude for three fault types were also derived.A shallow earthquake asperity model for predicting near field strong ground motions was systematically characterized.更多还原