使用有限差分（ FDTD ）在时域中实现2D和3D声波和弹性波传播的单文件实现。简单的形式….zip

# **Simple FDTD wave propagation in 3D elastic VTI medium** [NOT DEBUGGED YET] Single-file vectorized implementation of elastic wave propagation a medium with vertical transverse isotropy (VTI) in MATLAB. The program is solving second-order wave equation in displacement formulation. We don't account for derivatives of elastic parameters. Modelling area is surrounded by simple absorbing sponge boundaries with exponential decay (Cerjan, 1985).  ### **DISCRETIZATION DETAILS**: * Finite-Differences in Time Domain (FDTD) * Explicit time stepping * O(2,2) * Conventional stencils derived from Taylor series: * in space [1: -2 :1]/dx2 and [1: -1: -1:1]/4dxdz * in time [1: -2 :1]/dt2 ### **MODEL DETAILS** * VTI anisotropy (c11, c13, c33, c44, c66, rho) * Spounge of reflecting boundaries ### **HOW TO USE**: Run `elastic_3D_FDTD_O22_VTI.m` in MATLAB oleg.ovcharenko@kaust.edu.sa vladimir.kazei@kaust.edu.sa