Reverse time migration with Hilbert transform based full wavefield decomposition
文献类型：期刊论文
| 作者 | Wang Yi-Bo1; Zheng Yi-Kang1; Xue Qing-Feng1; Chang Xu1; Fei W. Tong2; Luo Yi2 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2016-11-01 |
| 卷号 | 59期号:11页码:4200-4211 |
| 关键词 | Reverse time migration Cross-correlation imaging condition Hilbert transform Wavefield decomposition |
| DOI | 10.6038/cjg20161122 |
| 文献子类 | Article |
| 英文摘要 | Reverse time migration (RTM) is an effective technique for complex subsurface imaging. It uses two-way wave-equation in wavefield forward and backward simulation, and employs cross-correlation imaging condition. It can offer subsurface images with high accuracy and high resolution. However, the conventional imaging condition generates low-frequency noises and may form false images around the strong velocity gradients or velocity interfaces in the migration velocity model. The wavefield components which propagate along different directions should be decomposed and selectively cross-correlated to improve the final image quality. In this manuscript, we use an efficient operator which based on Hilbert transform to decompose down-up and left-right going wavefields. The decomposed wavefields are then selectively cross-correlated according to the acquisition geometry and target location. In the numerical example section, the proposed RTM with wavefield decomposition is applied to Sigsbee 2B synthetic dataset. The results show that the effective wavefield decomposition operator combined with appropriate imaging condition can generate subsurface images with high signal-to-noise ratio. |
| WOS关键词 | EQUATION ; EXTRAPOLATION |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000387300200022 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53270]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Saudi Aramco, EXPEC Adv Res Ctr, Dhahran 31311, Saudi Arabia |
| 推荐引用方式 GB/T 7714 | Wang Yi-Bo,Zheng Yi-Kang,Xue Qing-Feng,et al. Reverse time migration with Hilbert transform based full wavefield decomposition[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2016,59(11):4200-4211. |
| APA | Wang Yi-Bo,Zheng Yi-Kang,Xue Qing-Feng,Chang Xu,Fei W. Tong,&Luo Yi.(2016).Reverse time migration with Hilbert transform based full wavefield decomposition.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,59(11),4200-4211. |
| MLA | Wang Yi-Bo,et al."Reverse time migration with Hilbert transform based full wavefield decomposition".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 59.11(2016):4200-4211. |
入库方式： OAI收割
来源：地质与地球物理研究所
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