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有限差分法地震波走时计算
引用本文:王华忠,谢海兵.有限差分法地震波走时计算[J].同济大学学报(自然科学版),1997,25(3):318-321.
作者姓名:王华忠  谢海兵
作者单位: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
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较差较大的情形。该算法对层析成像,迭前Kirchhoff偏移将是非常有用的。

关 键 词:有限差分  全微分  程函方程  地震波

Travel Time Calculation of Seismic Wave with Finite-difference Method
Wang Huazhong,Xie Haibing,Ma Zaitian.Travel Time Calculation of Seismic Wave with Finite-difference Method[J].Journal of Tongji University(Natural Science),1997,25(3):318-321.
Authors:Wang Huazhong  Xie Haibing  Ma Zaitian
Abstract: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.
Keywords:Finite difference  Full differential  Eikonal equation  Travel time  
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