Factorization synthesized-shot prestack depth migration in the helical coordinate system
文献类型：期刊论文
| 作者 | Zhang, WS ; Zhang, GQ
|
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2003-07-01 |
| 卷号 | 46期号:4页码:520-525 |
| 关键词 | prestack depth migration helical coordinate system fractorization hybrid method wavefield synthesizing MPI parallel |
| ISSN号 | 0001-5733 |
| 英文摘要 | Based on the synthesized-shot prestack depth migration, a new high efficient method for the synthesized-shot prestack depth migration is proposed. It is a hybrid technique which implements wavefield extrapolation with factorization in the helical coordinate system. The wavefield extrapolation is divided into two explicit solving processes. One is a causal process, and the other is an anticausal process. Such explicit solving processes in the helical coordinate system can improve the wavefield extrapolation efficiency. Moreover, based on the phase encoding principle, the synthesized-wavefield corresponding to multiple ray parameters is encoded and stacked. Then the calculations are implemented with MPI parallel algorithm based on the ray parameters. Thus the calculation efficiency is enhanced further. After deriving the relevant formulae and analyzing the computation cost quantitatively, numerical calculations for the Marmousi complex model are carried out and results comparisons are made. The imaging results show that the method presented in this paper has the advantages of high precision and good efficiency. So it can be applied to practical data processing. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000184512900014 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.amss.ac.cn/handle/2S8OKBNM/19013]  |
| 专题 | 计算数学与科学工程计算研究所 |
| 通讯作者 | Zhang, WS |
| 作者单位 | Chinese Acad Sci, Acad Math & Syst Sci, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, WS,Zhang, GQ. Factorization synthesized-shot prestack depth migration in the helical coordinate system[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2003,46(4):520-525. |
| APA | Zhang, WS,&Zhang, GQ.(2003).Factorization synthesized-shot prestack depth migration in the helical coordinate system.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,46(4),520-525. |
| MLA | Zhang, WS,et al."Factorization synthesized-shot prestack depth migration in the helical coordinate system".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 46.4(2003):520-525. |
入库方式： OAI收割
来源：数学与系统科学研究院
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