Frequency-domain finite-element inversion of elastic-wave velocity using the geological regular-blocky-model method
文献类型：期刊论文
| 作者 | Xu, K; Wang, MY |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2004-07-01 |
| 卷号 | 47期号:4页码:708-717 |
| 关键词 | frequency-domain elastic-wave finite-element inversion matrix compressional storage LU decomposition technique Levenberg-Marquard technique geologic regular-blocky-model method |
| ISSN号 | 0001-5733 |
| 文献子类 | Article |
| 英文摘要 | In order to obtain the elastic velocity of subsurface media directly, this paper derives a frequency-domain elastic-wave finite-element least-squares inversion method according to the criterion of minimizing the misfit function (the 1(2)-norm of the data residuals between observational data and modeling data) on the basis of the frequency-domain elastic-wave finite-element modeling equation. This inversion method includes the matrix compressional storage and LU decomposition techniques to save and solve the large sparse complex-valued coefficient matrix in frequency-domain modeling equation. Then the Levenberg-Marquard technique with an adjustable damping term is used to solve the inverse equation group. To sufficiently exploit subsurface geologic distribution features to decrease the number of inverse unknowns, this paper introduces the regular-blocky-model method into the inversion. Being verified by numerical models, this inversion method can obtain satisfied results using the shot profile contaminated with great random noise even up to 50% or the initial model parameters that have much difference from the original model parameters, which proves the inversion isnoise-resistable and 'robust'. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000222988300024 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/79237]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Xu, K |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, K,Wang, MY. Frequency-domain finite-element inversion of elastic-wave velocity using the geological regular-blocky-model method[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2004,47(4):708-717. |
| APA | Xu, K,&Wang, MY.(2004).Frequency-domain finite-element inversion of elastic-wave velocity using the geological regular-blocky-model method.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,47(4),708-717. |
| MLA | Xu, K,et al."Frequency-domain finite-element inversion of elastic-wave velocity using the geological regular-blocky-model method".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 47.4(2004):708-717. |
入库方式： OAI收割
来源：地质与地球物理研究所
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