横向非均匀介质中弹性地震波传播的数值模拟  

NUMERICAL SIMULATION OF ELASTIC SEISMIC WAVE PROPAGATION IN LATERALLY INHOMOGENEOUS MEDIA

作　　者：张剑锋[1] 李幼铭[2] 

机构地区：[1]大连理工大学,中国大连116023 [2]中国科学院地球物理研究所,中国北京100101

出　　处：《地震工程与工程振动》1995年第3期21-31,共11页Earthquake Engineering and Engineering Dynamics

基　　金：辽宁省博士起动基金;国家自然科学基金资助项目

摘　　要：应用混合变量弹性动力学方程和线性常微分方程组的矩阵指数解法,将层状介质中广泛应用的弹性波传播矩阵解法推广至横向非均匀介质,给出了一种可计算复杂地质体中弹性波传播的广义传播矩阵数值解法。该方法可模拟任意震源及所产生的各种体波、面波,数值结果表明具有很高的计算精度。The propagation matrix method used widely in stratified media is extended to laterally inho-mogeneous media,and a numerical method known as generalized propagation matrix method for simulating elastic seismic wave propagation in inhomogeneous media is presented by using mixed variable elastic wave equation and matrix exponent solution of system of linear ordinary differential equations. The method presented can be used to simulate all types of body waves surface waves and other complicated wavefield. The numerical results show its high computational precision.

关 键 词：弹性波 非均匀介质 传播矩阵 地震波 

分 类 号：P315.8[天文地球—地震学]