有限差分法地震波走时计算

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英文篇名：Travel Time Calculation of Seismic Wave with Finite-difference Method 中文刊名：同济大学学报(自然科学版) 英文刊名：JOURNAL OF TONGJI UNIVERSITY 作者：王华忠 ; 谢海兵 ; 马在田 英文作者：Wang Huazhong ; Xie Haibing ; Ma Zaitian(Department of Marine Geology and Geophysics ; Tongji University ; Shanghai ; 200092) 中文关键词：有限差分 ; 全微分 ; 程函方程 ; 旅行时 英文关键词：Finite difference ; Full differential ; Eikonal equation ; Travel time 出版日期：1997-06-30 机构：同济大学海洋地质与地球物理系!上海,200092,同济大学海洋地质与地球物理系!上海,200092,同济大学海洋地质与地球物理系!上海,200092 年：1997 期：03 出版单位：同济大学学报(自然科学版)

摘要

改进文献[1]提出的有限差分计算走时的算法．射线路径也可根据互易性原理求出．模型计算表明该方法精度较高并适用于速度差较大的情形．该算法对层析成像、选前Kirchhoff偏形特是非常有用的．
The finite-difference scheme proposed by Vidale (1988) is improved. In the present method, ray paths can also be derived by reciprocal principle. The method appears to be reasonably accurate for a variety of models with moderate and large velocity contrasts, and is useful for tomography and prestack Kirchhoff migration.

引文

1Vidale J,Finite—difference calculation of traveltimes:Bull.Seis Soc Am,1988,78:2062～2076
    2Qin F: Luo Y,Olsen K B, et al. Xinite—difference solution of the eikonal equation along expanding wavefronts. Geophysics, 1992, 57: 478～487