应用有限元素法合成地震记录

AN APPLICATION OF FINITE ELEMENT METHOD TO SYNTHETIC SEISMOGRAM

本文叙述了在空间进行有限元素剖分,时间域上进行差分运算求取理论合成记录的方法.模型试算的结果说明,正确选择各种参数和计算格式能得出稳定的解答.简单模型的试验结果与差分法结果基本一致,与射线时间计算相吻合.

This paper deals with the method of determing the synthetic seismo-gram with dissecting finite element in space and preceeding to use difference operations in time domain.The result of preliminary model calculation proves that a stable solution can be obtained from an appropriate selection of various parameters and computational scheme.Moreover, it has been verified that the results of simple model test and difference method are corresponding to each other and coincident with ray time calculation as well.