First-Order Quasi-P Wave Equation Forward Modeling and Boundary Conditions in VTI Mediumhemas-microsoft-com:office:office" />
详细信息
- 责任者：Han Linghe (Key Lab. of Submarine Geosciences and Prospecting Techniques ; Ministry of Education ; College of Marine Geosciences ; Ocean University of China ; Qingdao 266100 ; China) ; He Bingshou
- 刊名：Oil Geophysical Prospecting
- 出版年：2010
- 卷期：45(6)
- 关键词：弹性波 ; elastic waves ; 波动方程 ; wave equation
- 页码：p.819-825
- 图表：5 illus., 26 refs.
- 分类号：1600
- issnNo：ISSN1000-7210
- isbnNo：CN13-1095/TE
摘要
Based on the first-order Quasi-P wave equation in VTI medium, the high-order finite difference scheme of the equation which was solved in the staggered grid was constructed in this paper, the stability condition of the equation was also given, the Perfectly Matched Layer (PML) absorbing boundary conditions which fit the equation were thoroughly studied in this paper. Based on the studies above, the forward modeling was realized for the first-order Quasi-P wave equation in VTI medium, high precision wavefield snapshot and synthetic record were obtained, the pre-stack reverse-time depth migration algorithm was used to conduct migration imaging for the complicated model, then the results were achieved. The numerical experiments show that the Quasi-P wave equation forward modeling can overcome some of the defects of the conventional wave equation modeling, it also can facilitate the research on wave propagation mechanism in the anisotropic medium.