弹性波动方程正演程序，广泛应用于地震勘探开发阶段的正演模拟,Elastic wave equation forward procedure, widely used in seismic exploration and development phase of the forward modeling

对波动方程进行隐式差分，利用MATLAB编程进行求解，模拟波的传播-Volatility implicit difference equation, using MATLAB programming solver to simulate wave propagation