Methods for wave equation prestack depth migration and numerical experiments  

作　　者：ZHANG Guanquan ZHANG Wensheng 

机构地区：[1]Institute of Computational Mathematics and Scientific/Engineering Computing, Academy of Mathematics and System Sciences, Chinese Academy of Sciences, Beijing 100080, China Institute of Computational Mathematics and Scientific/Engineering Computing, Academy of Mathematics and System Sciences, Chinese Academy of Sciences, Beijing 100080, China

出　　处：《Science China Mathematics》2004年第z1期111-120,共10页中国科学：数学（英文版）

基　　金：This work was supported by Major State Basic Research Program of Peoples's Republic of China(No.G1999032800);Major Project(No.49894190);the National Natural Science Foundation of China(Grant No.40004003).All numerical experiments were completed on the PC-cluster in the State Key Lab of Scientific/Engineering Computing.

摘　　要：In this paper the methods of wave theory based prestack depth migration and their implementation are studied. Using the splitting of wave operator, the wavefield extrapolation equations are deduced and the numerical schemes are presented. The numerical tests for SEG/EAEG model with MPI are performed on the PC-cluster. The numerical results show that the methods of single-shot (common-shot) migration and synthesized-shot migration are of practical values and can be applied to field data processing of 3D prestack depth migration.In this paper the methods of wave theory based prestack depth migration and their implementation are studied. Using the splitting of wave operator, the wavefield extrapolation equations are deduced and the numerical schemes are presented. The numerical tests for SEG/EAEG model with MPI are performed on the PC-cluster. The numerical results show that the methods of single-shot (common-shot) migration and synthesized-shot migration are of practical values and can be applied to field data processing of 3D prestack depth migration.

关 键 词：wave operator splitting  3D PRESTACK depth migration  SEG/EAEG model  synthesized-shot  FINITE-DIFFERENCE method  FACTORIZATION method  hybrid method  MPI. 

分 类 号：N[自然科学总论]