Normalized nonzero-lag crosscorrelation elastic full-waveform inversion
文献类型：期刊论文
| 作者 | Zhang, Zhendong1; Alkhalifah, Tariq1; Wu, Zedong1; Liu, Yike2; He, Bin2; Oh, Juwon3 |
| 刊名 | GEOPHYSICS
 |
| 出版日期 | 2019 |
| 卷号 | 84期号:1页码:R1-R10 |
| ISSN号 | 0016-8033 |
| DOI | 10.1190/GEO2018-0082.1 |
| 英文摘要 | Full-waveform inversion (FWI) is an attractive technique due to its ability to build high-resolution velocity models. Conventional amplitude-matching FWI approaches remain challenging because the simplified computational physics used does not fully represent all wave phenomena in the earth. Because the earth is attenuating, a sample-by-sample fitting of the amplitude may not be feasible in practice. We have developed a normalized nonzero-lag crosscorrelataion-based elastic FWI algorithm to maximize the similarity of the calculated and observed data. We use the first-order elastic-wave equation to simulate the propagation of seismic waves in the earth. Our proposed objective function emphasizes the matching of the phases of the events in the calculated and observed data, and thus, it is more immune to inaccuracies in the initial model and the difference between the true and modeled physics. The normalization term can compensate the energy loss in the far offsets because of geometric spreading and avoid a bias in estimation toward extreme values in the observed data. We develop a polynomial-type weighting function and evaluate an approach to determine the optimal time lag. We use a synthetic elastic Marmousi model and the BigSky field data set to verify the effectiveness of the proposed method. To suppress the short-wavelength artifacts in the estimated S-wave velocity and noise in the field data, we apply a Laplacian regularization and a total variation constraint on the synthetic and field data examples, respectively. |
| WOS关键词 | MISFIT ; MEDIA |
| 资助项目 | KAUST |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000457601800032 |
| 出版者 | SOC EXPLORATION GEOPHYSICISTS |
| 资助机构 | KAUST ; KAUST ; KAUST ; KAUST ; KAUST ; KAUST ; KAUST ; KAUST |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/90514]  |
| 专题 | 地质与地球物理研究所_中国科学院油气资源研究重点实验室 |
| 通讯作者 | Zhang, Zhendong |
| 作者单位 | 1.King Abdullah Univ Sci & Technol, Dept Phys Sci & Engn, Thuwal 239556900, Saudi Arabia 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Chonbuk Natl Univ, Dept Resources & Energy Engn, 567 Baekje Daero, Jeonju Si 54896, Jeollabuk Do, South Korea |
| 推荐引用方式 GB/T 7714 | Zhang, Zhendong,Alkhalifah, Tariq,Wu, Zedong,et al. Normalized nonzero-lag crosscorrelation elastic full-waveform inversion[J]. GEOPHYSICS,2019,84(1):R1-R10. |
| APA | Zhang, Zhendong,Alkhalifah, Tariq,Wu, Zedong,Liu, Yike,He, Bin,&Oh, Juwon.(2019).Normalized nonzero-lag crosscorrelation elastic full-waveform inversion.GEOPHYSICS,84(1),R1-R10. |
| MLA | Zhang, Zhendong,et al."Normalized nonzero-lag crosscorrelation elastic full-waveform inversion".GEOPHYSICS 84.1(2019):R1-R10. |
入库方式： OAI收割
来源：地质与地球物理研究所
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