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

作者：Yan Shou-Guo^*; Xie Fu-Li; Li Chang-Zheng; Zhang Bi-Xing

来源：Applied Geophysics, 2016, 13(2): 333-342.

DOI：10.1007/s11770-016-0536-2

• layered media
• porous media
• Rayleigh waves
• matrix optimization

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 lowfrequency region when a porous layer is at the surface; otherwise, the difference is small.

• 出版日期2016-6
• 单位中国科学院声学研究所; 黄河水利委员会黄河水利科学研究院; 长江水利委员会长江科学院