离散介质中地震波传播的数值模拟

NUMERICAL SIMULATION OF SEISMIC WAVES PROPAGATION IN DISCRETE MEDIA

摘要:

伪谱法应用付里叶变换和有限差分求解波动方程,本文利用伪谱法模拟了三维离散介质中地震波的传播。结果表明:(1)该方法的计算精度高;(2)即使在均匀、各向同性的离散介质中,地震波的传播也表现出方位各向异性的特点。

Abstract:

In this paper, seismic waves propagating in 3-D discrete media are simulated with pseudo-spectrum method, which using Fourier transform and finite difference to solve wave equation. The result shows:(1) The method has a high computational accuracy.(2) The characteristic of seismic waves propagating shows azimuthal anisotropy even in homogeneous isotropic discrete media.