Wave equation based migration velocity estimation: a direct inversion approach
文献类型：期刊论文
| 作者 | Zhang Jiang-Jie1,2; Zhang Jian-Feng1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2011-03-01 |
| 卷号 | 54期号:3页码:835-844 |
| 关键词 | Wave equation migration Velocity estimation Angle gather Direct inversion |
| ISSN号 | 0001-5733 |
| DOI | 10.3969/j.issn.0001-5733.2011.03.024 |
| 文献子类 | Article |
| 英文摘要 | We present a non-iterative velocity estimation scheme using the angle gathers resulting from the shot-profile wave equation based pre-stack depth migration. The paper discusses how to generate the angle gathers using shot-profile wave equation based migrations. A quantitative relationship between the curvature of the events in the angle gathers and the velocity perturbations in heterogeneous media is presented. As a result, we propose a direct scheme of velocity model updating based on the curvature of the events in the angle gathers. In the case that a reasonable velocity model is available, we can get a more accurate velocity model with a time shot-profile wave equation migration. This approach can overcome the problem that the velocity model obtained using the travel time tomography does not match the wave equation migration algorithm. Also, the resulting scheme avoids multiple computations of wave equation migrations, as in the current migration velocity estimation. Numerical examples demonstrate the effectiveness of the scheme. |
| WOS关键词 | COMMON-IMAGE GATHERS ; ANGLE-DOMAIN |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000289041200024 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/74726]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhang Jiang-Jie |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, 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 Jiang-Jie,Zhang Jian-Feng. Wave equation based migration velocity estimation: a direct inversion approach[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2011,54(3):835-844. |
| APA | Zhang Jiang-Jie,&Zhang Jian-Feng.(2011).Wave equation based migration velocity estimation: a direct inversion approach.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,54(3),835-844. |
| MLA | Zhang Jiang-Jie,et al."Wave equation based migration velocity estimation: a direct inversion approach".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 54.3(2011):835-844. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。