Dispersion function of Rayleigh waves in porous layered half-space system

作     者：阎守国 谢馥励 李长征 张碧星 

作者机构：中国科学院声学研究所声场声信息国家重点实验室北京100090 北京歌尔泰克科技有限公司北京100090 黄河水利科学研究院郑州450003 

出 版 物：《Applied Geophysics》 (应用地球物理（英文版）)

年 卷 期：2016年第13卷第2期

页      面：333-342,419页

核心收录：

学科分类：081801[工学-矿产普查与勘探] 081802[工学-地球探测与信息技术] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：supported by National Sciences Foundation(No.11174321 11174322 and 11574343) 

主　　题：layered media porous media Rayleigh waves matrix optimization 

摘      要：Rayleigh wave exploration is based on an elastic layered half-space model. If practical formations contain porous layers, these layers need to be simplified as an elastic medium. We studied the effects of this simplification on the results of Rayleigh wave exploration. Using a half-space model with coexisting porous and elastic layers, we derived the dispersion functions of Rayleigh waves in a porous layered half-space system with porous layers at different depths, and the problem of transferring variables to matrices of different orders is solved. To solve the significant digit overflow in the multiplication of transfer matrices, we propose a simple, effective method. Results suggest that dispersion curves differ in a low- frequency region when a porous layer is at the surface; otherwise, the difference is small.