正交介质中地震波传播数值模拟与分析

Numerical Simulation and Analysis of Seismic Wave Propagation in Orthotropic Media

建立了正交各向异性介质中的波动方程 ,应用高阶有限差分进行数值模拟 ,得到三分量地震波场快照 ,并在此基础上 ,分析了正交各向异性介质中地震波场特征。结果表明 :在正交各向异性介质中 ,地震波场十分复杂 ,三个分量相互藕合 ,两个水平分量波的偏振方向与裂隙走向既不平行。

Wave motion equations of the orthotropic media are established Snapshot of three component seismic wave field is achieved by conducting a numerical simulation with high order finite difference method On the basis of simulation,characteristics of the seismic wave field are analyzed for the orthotropic media The result shows that in the orthotropic media the wave field is very complex,three components are coupled each other,of which the polarization directions of two horizontal components are neither parallel nor perpendicular with the fracture