各向异性介质中地震波射线正演  

SEISMIC WAVE RAY FORWARD IN ANISOTROPY MEDIUM

作　　者：孔选林[1] 李录明[1] 罗省贤 夏铭[1] 

机构地区：[1]成都理工大学油气藏地质与开发工程国家重点实验室,四川成都610059

出　　处：《物探化探计算技术》2008年第3期178-184,167,共7页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：在给定的理论模型下,研究了地层各向异性的存在对地震波传播速度的影响。用一种逐段迭代的射线追踪方法对其进行走时正演,得到了相应的时距曲线。并用该时距曲线结果,与基于各向同性介质模型假设所得到的时距曲线结果,进行对比,验证了所采用的射线追踪方法的精确性和有效性。该射线追踪方法理论上适用于任何界面模型,可以追踪到任意给定的精度,是一种快速、高效,并易于操作的射线追踪方法。The paper discusses the anisotropy effect for seismic wave propagation velocity based upon a given theory model and a segmental iteration ray-tracing method is adopted to forward traveltime of seismic wave of the model. By comparing two calculated time-distance curves based transversely isotropy medium and isotropy medium, respectivly, the validity and accuracy of segmental iteration ray-tracing method are proved and show that it is a effective and practicable ray-tracing method as it is applicable for any interface model on theory and can achieve any desired precise.

关 键 词：横向各向同性 速度 射线追踪 逐段迭代 时距曲线 

分 类 号：P631.4[天文地球—地质矿产勘探]