KMS Of Academy of mathematics and systems sciences, CAS
One-step extrapolation method for reverse time migration | |
Zhang, Yu1; Zhang, Guanquan2 | |
2009-07-01 | |
发表期刊 | GEOPHYSICS |
ISSN | 0016-8033 |
卷号 | 74期号:4页码:A29-A33 |
摘要 | We have proposed a new method, a one-step extrapolation algorithm, to solve the acoustic wave equation. By introducing a square-root operator, the two-way wave equation can be formulated as a first-order partial differential equation in time, which is similar to the one-way wave equation. To solve the new wave equation, we used a stable explicit extrapolation method in the time direction and handled lateral velocity variations in the space and wavenumber domains. Unlike the conventional explicit finite-difference schemes, the new method does not suffer from numerical instability or numerical dispersion problems. It can be used to design cost-effective and high-quality reverse time migration or modeling code. |
关键词 | extrapolation geophysical signal processing inverse problems seismic waves seismology wave equations |
DOI | 10.1190/1.3123476 |
语种 | 英语 |
资助项目 | Chinese Natural Science Foundation[10431030] |
WOS研究方向 | Geochemistry & Geophysics |
WOS类目 | Geochemistry & Geophysics |
WOS记录号 | WOS:000267599500001 |
出版者 | SOC EXPLORATION GEOPHYSICISTS |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.amss.ac.cn/handle/2S8OKBNM/8480 |
专题 | 中国科学院数学与系统科学研究院 |
通讯作者 | Zhang, Yu |
作者单位 | 1.CGGVeritas, Houston, TX USA 2.Chinese Acad Sci, Acad Math & Syst Sci, Inst Computat Math & Sci Engn Comp, State Key Lab Sci & Engn Comp, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Yu,Zhang, Guanquan. One-step extrapolation method for reverse time migration[J]. GEOPHYSICS,2009,74(4):A29-A33. |
APA | Zhang, Yu,&Zhang, Guanquan.(2009).One-step extrapolation method for reverse time migration.GEOPHYSICS,74(4),A29-A33. |
MLA | Zhang, Yu,et al."One-step extrapolation method for reverse time migration".GEOPHYSICS 74.4(2009):A29-A33. |
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