| 一种新程函方程差分法层析成像 |
| |
| 引用本文： | 谢海马 王燕琨. 一种新程函方程差分法层析成像[J]. 石油地球物理勘探, 1997, 32(5): 623-627 |
| |
| 作者姓名： | 谢海马 王燕琨 |
| |
| 作者单位： | [1]同济大学 [2]华北石油管理局勘探开发研究院 |
| |
| 摘 要： | 本文改进了Ｖｉｄａｌｅ（１９８８）提出的有限差分计算旅行时的算法。在此基础上，通过给出已知二维空间网格上的初至旅行时，求出接收点至激发点之间的地震初至波射线路径，从而利用同时迭代重建技术（ＳＩＲＴ）实现任意二维介质速度分布情况下的弯曲射线法层析成像。理论模型计算表明，本方法是一种层析成像反演的有效手段。
|
| 关 键 词： | 程函方程 层析成像 差分法 地震勘探 |
Seismic tomography based on new finite difference scheme of eikonal equation |
| |
| Xie Haibing,Ma Zaitian and Wang Yankun.. Seismic tomography based on new finite difference scheme of eikonal equation[J]. Oil Geophysical Prospecting, 1997, 32(5): 623-627 |
| |
| Authors: | Xie Haibing Ma Zaitian Wang Yankun. |
| |
| Abstract: | We advance here a new finite-difference calculation of traveltimes that is betterthan Vidale's (1988). First-break ray paths between sources to receivers can be derived from known first break times at knots of 2-D grid.Then,curved-ray seismictomography in any velocity distributioss inD me medium can be achieved by takingsimultaneously iterative reconstruction technique.Theoretical modeling shows thatthe method is an effective one for tomographic inversion. |
| |
| Keywords: | finite difference eikonal equation travel time ray tracing tomography iteration |
| 本文献已被 CNKI 维普 等数据库收录！ |
