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《Progress In Geophysics》 2005-03
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Downward Continuing the Seismic record of topography using coordination transformated method

WANG Xiang-chun,LIU Xue-wei (School of Geophysics and Information Technology,China University of Geosciences(Beijing),Beijing 100083,China)  
In order to solve the effect of surface topography,this article presents the method of transforming the curved grids of(x-z)-coordinate system into rectangular grids of(ζ-η)-coordinate system.Then we derive the wave equation in the(ζ-η)-coordinate system.At last we continue the wave field downward using phase shift technique in the transformed coordinate system.Through calculating the model,we conclude that this method can achieve some good results.
【CateGory Index】: P631.4;
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