Lie algebra integral algorithm of travel-time calculation for pre-stack Kirchhoff depth migration
文献类型：期刊论文
| 作者 | Zhang Lian-Ping1,2; Liu Hong1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2010-08-01 |
| 卷号 | 53期号:8页码:1893-1901 |
| 关键词 | Coordinate Transform Lie Algebra Integral Exponential Mapping Seismic Travel Time Lateral Velocity Variation |
| ISSN号 | 0001-5733 |
| DOI | 10.3969/j.issn.0001-5733.2010.08.015 |
| 文献子类 | Article |
| 英文摘要 | Based on pseudo difference operator and Lie algebra integral method, we proposed a new travel-time calculation method for pre-stack Kirchhoff depth migration in medium with lateral velocity variation using eikonal equation and coordinate transform of wave-field. Comparing with Lie algebra time integral used in the pre-stack Kirchhoff time migration, our method contains the first-order item of wave-number and the second-order item also needs to be corrected in depth integral. Therefore we improve the performance of previous method in calculations of the symbol of single root square operator, Lie algebra integral, exponential mapping and the coefficients of travel-time. Here we compare the expression of improved Lie algebra integral with time integral, and. the calculated travel-time is coincident with the theoretical value in medium with laterally linear velocity variation. Through the effect analysis of some items on the final travel-time, we can conclude that the odd item improved the precision further and our algorithm is suitable for the calculation of travel-time in medium with lateral velocity variation, and what's more, there is no mass storage of travel-time tables, which is very beneficial to improving the precision and efficiency of pre-stack Kirchhoff depth migration. |
| WOS关键词 | FINITE-DIFFERENCE CALCULATION ; WAVE-FRONT CONSTRUCTION ; INTERPOLATION ; COMPUTATION ; MATRIX ; MODELS ; RAYS |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000281331800015 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/72666]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhang Lian-Ping |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang Lian-Ping,Liu Hong. Lie algebra integral algorithm of travel-time calculation for pre-stack Kirchhoff depth migration[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2010,53(8):1893-1901. |
| APA | Zhang Lian-Ping,&Liu Hong.(2010).Lie algebra integral algorithm of travel-time calculation for pre-stack Kirchhoff depth migration.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,53(8),1893-1901. |
| MLA | Zhang Lian-Ping,et al."Lie algebra integral algorithm of travel-time calculation for pre-stack Kirchhoff depth migration".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 53.8(2010):1893-1901. |
入库方式： OAI收割
来源：地质与地球物理研究所
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