Layer by layer waveform inversion of seismic reflection data
文献类型：期刊论文
| 作者 | Ding Ji-Cai; Chang Xu; Liu Yi-Ke; Wang Chang-Yong |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2007-03-01 |
| 卷号 | 50期号:2页码:574-580 |
| 关键词 | nonlinear inversion gradient method layer by layer inversion perturbation-response |
| ISSN号 | 0001-5733 |
| 文献子类 | Article |
| 英文摘要 | A layer-by-layer waveform inversion method is developed to derive the velocities of multi-layered model. Firstly, one new concept-medium perturbation-response is introduced and the gradient method for waveform inversion is analysed. Essentially, waveform inversion is to extract residual structural information between the real earth and predicted model from the waveform residuals between the observed and the synthetic seismograms. The strength of waveform inversion is the high resolution of the inversion result by using a large quantity of waveform. information. A weakness of waveform. inversion is time-consuming. In addition, waveform information will tend to get stuck in local minima if the starting model is too far from the actual model. The reason for this failure is that the misfit function can be highly nonlinear with respect to velocity models. The layer-by-layer method is to minimize the misfit function for every layer from top to bottom. In this case the total misfit function will be minimum too. For each layer, we use dichotomy method to scan the velocity. This method can improve the speed of computation and avoid getting stuck in local minima for iterative algorithm. Velocity and reflection interfaces can be estimated quickly and accurately based on the medium perturbation-response and the change of the misfit function. |
| WOS关键词 | ELASTIC INVERSION |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000245399900031 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/68376]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Ding Ji-Cai |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Sinopec, Int Petr Explorat & Prod Corp, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ding Ji-Cai,Chang Xu,Liu Yi-Ke,et al. Layer by layer waveform inversion of seismic reflection data[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2007,50(2):574-580. |
| APA | Ding Ji-Cai,Chang Xu,Liu Yi-Ke,&Wang Chang-Yong.(2007).Layer by layer waveform inversion of seismic reflection data.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,50(2),574-580. |
| MLA | Ding Ji-Cai,et al."Layer by layer waveform inversion of seismic reflection data".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 50.2(2007):574-580. |
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。