二维复杂介质中地震波走时和射线的计算方法及其应用

Computation Method of Seismic Wave Travel Times and Rays in 2D Complicated Velocity Models and Its Application

将Podvin和Lecomte的精确局部格点走时计算方法和Schneider等人的动态规划方法结合起来,可得到一种快速、有效的有限差分波前计算方法。使用该方法对各种类型地震波的走时和射线的计算进行了讨论,并给出了这种有限差分走时计算在叠前深度偏移中的应用实例。

Combined precise local travel time computation method proposed by Pascal Podvin and Isabelle Lecomte with dynamic programming approach by Schneider et al. , a new rapid and efficient finite difference wavefront computation method was proposed in the paper. We applied this method to the computation of various types of seismic wave travel times and rays, and gave the applying example to Kirchhoff prestack depth migration.