Method for extracting angle-domain common image gathers in Kirchhoff beam migration
作者：ZHANG Zhihou,YAO Yu,SUN Hui,YANG Junjie,LI Meng
摘要：Kirchhoff beam migration is a simplified Gaussian beam migration,which omits the dynamic information and can calculate multi-arrival traveltime,so it is a high-precision and fast seismic imaging method.In the imaging process,extracting common image gathers can be used for velocity analysis,improving the accuracy of modeling and imaging quality.Compared with the conventional common image gathers extracting methods,the angle-domain common image gathers extracting method can avoid the artifacts caused by multi-arrival seismic waves.The authors present a new method of extracting common image gathers in angle-domain from Kirchhoff beam migration and verify the method by numerical calculations.
发文机构：Faculty of Geosciences and Environmental Engineering School of Resources and Environment
关键词：Kirchhoffbeammigrationangle-domaincommonimagegathersbeampropagatortraveltimecalculation
分类号： P31[天文地球—固体地球物理学]
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