Implement of optimal separable approximation in seismic migration
文献类型：期刊论文
| 作者 | Zhang, ZF; Liu, H; Chen, JB; Li, YM |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2005-11-01 |
| 卷号 | 48期号:6页码:1422-1427 |
| 关键词 | Optimal Separable Approximation One-way Wave Operator Characteristic Function Migration |
| ISSN号 | 0001-5733 |
| 文献子类 | Article |
| 英文摘要 | An optimal separable approximation(OSA) is applied to the characteristic function of one-way wave operator in the seismic migration algorithm. The characteristic function is expressed as products of functions in space variable( g) and functions in wave number variable(k). Based on the optimal separable approximation, the mixed domain algorithm with Fourier and inverse Fourier transformation is used to approximate the one-way wave operator. To overcome numerical instability from approximating characteristics function near the singular point, an equivalent sticking skill is adopted to improve algorithmic stability. Moreover, separate frequency computation and linear interpolation for space variables are used to improve precision and save time. The impulse response of one-way wave operator on simples and the complex lateral variable velocity model shows that the optimal separable approximation can apply to lateral velocity variation in the case of small steps. Results on the Marmousi model test show the new method can also be used to image complex structure. |
| WOS关键词 | OPERATOR |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000233659900027 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/65848]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhang, ZF |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, ZF,Liu, H,Chen, JB,et al. Implement of optimal separable approximation in seismic migration[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2005,48(6):1422-1427. |
| APA | Zhang, ZF,Liu, H,Chen, JB,&Li, YM.(2005).Implement of optimal separable approximation in seismic migration.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,48(6),1422-1427. |
| MLA | Zhang, ZF,et al."Implement of optimal separable approximation in seismic migration".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 48.6(2005):1422-1427. |
入库方式： OAI收割
来源：地质与地球物理研究所
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