正交各向异性介质中地震记录的有限差分数值模拟  

FINTE DIFFERENCE NUMERICAL MODELING OF SEISMIC RECORDS IN THE ORTHOTROPIC MEDIUM

作　　者：邵治龙[1] 贺振华[1] 黄德济[1] 

机构地区：[1]成都理工学院

出　　处：《物探化探计算技术》1998年第4期300-305,共6页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：国家自然科学基金

摘　　要：本文首先介绍了正交各向异性介质弹性波动方程的建立过程，然后讨论了高阶有限差分算法的实现原理、算法的稳定性和收敛性以及吸收边界条件的选取，并对正交各向异性介质作了正演模拟。通过波场快照、共炮点地震记录和ＶＳＰ模拟记录等正演分析。Firstly, this paper introduces the elastic wave equation of orthotropic medium, and then, discusses the basic theory of high order difference algorithm, the stability and convergence of the algorithm and the selection of absorption boundary conditions. The forward modelings of orthotropic medium are made, such as wave field snapshot, synthetic seismic records of common source point and VSP modeling records. The results show that this algorithm is effective in modeling the propagation of elastic wave in orthotropic medium.

关 键 词：各向异性介质 高阶有限差分 正演模拟 地震记录 

分 类 号：P631.443[天文地球—地质矿产勘探]