Pseudo-spectral method for modeling elastic wave propagation in isotropic medium

Numerical simulation method study the elastic wave field in complex media characteristics and propagation law of the important means. In this paper, the authors work out numerical simulation of wave filed in some complex double medium model based on staggered grid finite difference method (FDM) and conventional pseudo-spectral method (PSM). From the two methods of numerical simulation we can get the elastic wave propagation in 2D anisotropic medium wave field snapshot graph which is roughly similar. It exist quasi P wave, SV wave and SH wave, wave three bifurcation and other special phenomenon in wave field snapshot graph. In addition, the elastic wave field change in space, the quasi P wave, SV wave and SH wave coupling relationship is more complex.