【摘要】 本文给出了采用潜源区样本空间确定CPSHA模型的空间分布函数的方法。该方法将潜源区震级上限和给定震级m之差与潜源区面积的乘积定义为该潜源区m级以上地震事件的样本空间,称为事件体;把所有事件体的集合作为地震统计区的样本空间,然后利用任意一个事件体与地震统计区样本空间的比值关系确定空间分布函数。这种利用潜源区样本空间确定空间分布函数的方法不仅可以避免多因子方法的主观性和人为性,而且可以给出任意震级间隔的空间分布函数;其简单的计算过程也有利于在CPSHA方法使用多方案潜源区评估场地的地震危险性。更多还原

【Abstract】 This paper introduces a method for determination of the spatial distribution function in CPSHA using the seismic sample space of above magnitude m in a potential seismic source zone( PSSZ). The seismic sample is defined as the product of the source area times the difference between upper limit magnitude and any given magnitude( m),and referred as event volume. The set composed of all the event volumes in a seismic statistical zone is used as the seismic sample space of seismic statistical zone. The spatial distribution function can be determined by the specific value in an event volume and the sample space of seismic statistical zone. This seismic-sample-space method can avoid the subjectivity and artificiality existing in multi-factor method,and also provide spatial distribution functions with arbitrary magnitude interval. Furthermore,the simple calculation of seismic-sample-space method is very conducive to the implementation for multi-set of sources in CPSHA to estimate seismic risk at a site.更多还原