Effect of stratigraphic attenuation on inverse-scattering seismic velocity inversion
文献类型：期刊论文
| 作者 | Duan Xiao-Liang1; Zhai Hong-Yu2; Wang Yi-Bo2; Yang Hui-Zhu1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2016-10-01 |
| 卷号 | 59期号:10页码:3788-3797 |
| 关键词 | Inversion Seismic velocity Inverse scattering Attenuation |
| DOI | 10.6038/cjg20161023 |
| 文献子类 | Article |
| 英文摘要 | The attenuation effect can influence the precision of inversion of Earth's physical properties when solving geophysical inverse problems utilizing seismic data. Therefore using the viscoelastic acoustic wave equation is more suitable for the actual situation. In this paper, based on seismic forward modeling considering the attenuation effect in the frequency-space domain, the inversion algorithm with inverse scattering based on viscoelastic acoustic equation is applied in the frequency domain to reconstruct seismic velocity distribution. Real or complex velocity is used individually in the inversion process depending on whether the earth attenuation effect is considered. Meanwhile the regularization of inversion parameter's total variation makes this inversion approach more stable. Frequency-divided inversion strategy is adopted, the lower frequency inversion result is set as the background model of higher frequency inversion, and the background model remains constant during the inversion process for a particular frequency. So this inversion method does not need to reconstruct the forward operator in each iteration, which makes it more efficient. In order to improve the efficiency of inversion calculation further, the MPI parallel computing strategy is used in the procedure of inversion. In a 2D numerical example, the inversion algorithm is applied with and without considering the attenuation effect respectively. The results from the former approach is closer to the real velocity model, while the latter cannot match the real model. This algorithm can achieve high-resolution velocity reconstruction results for complex geological models at shallow and middle layers, and can provide accurate velocity information for other seismic data processing. While the inversion resolution is not ideal for a deep layer due to the attenuation of seismic energy. |
| WOS关键词 | WAVE-FORM INVERSION ; CONTRAST SOURCE INVERSION ; FREQUENCY-DOMAIN ; OPTIMIZATION ; DISPERSION ; REFRACTION ; MEDIA |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000388654300023 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53217]  |
| 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.Tsinghua Univ, Dept Engn Mech, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Duan Xiao-Liang,Zhai Hong-Yu,Wang Yi-Bo,et al. Effect of stratigraphic attenuation on inverse-scattering seismic velocity inversion[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2016,59(10):3788-3797. |
| APA | Duan Xiao-Liang,Zhai Hong-Yu,Wang Yi-Bo,&Yang Hui-Zhu.(2016).Effect of stratigraphic attenuation on inverse-scattering seismic velocity inversion.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,59(10),3788-3797. |
| MLA | Duan Xiao-Liang,et al."Effect of stratigraphic attenuation on inverse-scattering seismic velocity inversion".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 59.10(2016):3788-3797. |
入库方式： OAI收割
来源：地质与地球物理研究所
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