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有限差分法地震波走时计算
Travel Time Calculation of Seismic Wave with Finite-difference Method
【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.
【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.
【关键词】 有限差分;
全微分;
程函方程;
旅行时;
【Key words】 Finite difference; Full differential; Eikonal equation; Travel time;
【Key words】 Finite difference; Full differential; Eikonal equation; Travel time;
- 【文献出处】 同济大学学报(自然科学版) ,JOURNAL OF TONGJI UNIVERSITY , 编辑部邮箱 ,1997年03期
- 【分类号】P315
- 【被引频次】34
- 【下载频次】319