摘要
作者在本文中提出了一种层析成像的正演和反演方法。首先对求解区作网格剖分,由给定的正演速度模型在网格点上双线性插值,获得整个网格节点的速度分布。然后,对波阵面作一近似,在此基础上,用最小走时最短路径射线追踪法完成正演。反演则是通过正演的方法实现的。理论模型算例表明,本方法效果较好。
A new forward modeling and inversion method of geophysical tomography are presented in this paper. First, by dividing the interested area into small cells and applying bilinear interpolation among the nodes of the cells for given forward velocity model, we get the velocity distribution of all nodes of cells. Then, with some approximation to the wave front section, the forward modeling can be achieved through the ray tracing method based on the minimum traveling time and the shortest traveling trace assumption. Finally, the inversion is implemented through the method of forward modeling. The example of theoretic model illustrates the validity of the method.
出处
《物探化探计算技术》
CAS
CSCD
2002年第4期337-340,共4页
Computing Techniques For Geophysical and Geochemical Exploration
关键词
层析成像
正演
反演
波阵面
最小走时最短路径
射线追踪
地震勘探
tomography
minimum travelling time
shortest travelling trace
inversion Forward modeling
wave front section
ray tracing
