Seismic modeling by optimizing regularized staggered-grid finite-difference operators using a time-space-domain dispersion-relationship-preserving method
文献类型：期刊论文
| 作者 | Wang, Yanfei1; Liang, Wenquan1; Nashed, Zuhair2; Li, Xiao1; Liang, Guanghe1; Yang, Changchun1 |
| 刊名 | GEOPHYSICS
 |
| 出版日期 | 2014-09-01 |
| 卷号 | 79期号:5页码:T277-T285 |
| ISSN号 | 0016-8033 |
| DOI | 10.1190/GEO2014-0078.1 |
| 文献子类 | Article |
| 英文摘要 | The staggered-grid finite-difference (FD) method is widely used in numerical simulation of the wave equation. With stability conditions, grid dispersion often exists because of the discretization of the time and the spatial derivatives in the wave equation. Therefore, suppressing grid dispersion is a key problem for the staggered-grid FD schemes. To reduce the grid dispersion, the traditional method uses high-order staggered-grid schemes in the space domain. However, the wave is propagated in the time and space domain simultaneously. Therefore, some researchers proposed to derive staggered-grid FD schemes based on the time-space domain dispersion relationship. However, such methods were restricted to low frequencies and special angles of propagation. We have developed a regularizing technique to tackle the ill-conditioned property of the symmetric linear system and to stably provide approximate solutions of the FD coefficients for acoustic-wave equations. Dispersion analysis and seismic numerical simulations determined that the proposed method satisfies the dispersion relationship over a much wider range of frequencies and angles of propagation and can ensure FD coefficients being solved via a well-posed linear system and hence improve the forward modeling precision. |
| WOS关键词 | SCALAR WAVE-EQUATION ; ORDER ; SCHEMES ; ACCURACY |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000345907100039 |
| 出版者 | SOC EXPLORATION GEOPHYSICISTS |
| 资助机构 | National Natural Science Foundation of China(41325016 ; National Natural Science Foundation of China(41325016 ; R&D of Key Instruments and Technologies for Deep Resources Prospecting (the National R&D Projects for Key Scientific Instruments)(ZDYZ2012-1-02-04) ; R&D of Key Instruments and Technologies for Deep Resources Prospecting (the National R&D Projects for Key Scientific Instruments)(ZDYZ2012-1-02-04) ; 11271349) ; 11271349) ; National Natural Science Foundation of China(41325016 ; National Natural Science Foundation of China(41325016 ; R&D of Key Instruments and Technologies for Deep Resources Prospecting (the National R&D Projects for Key Scientific Instruments)(ZDYZ2012-1-02-04) ; R&D of Key Instruments and Technologies for Deep Resources Prospecting (the National R&D Projects for Key Scientific Instruments)(ZDYZ2012-1-02-04) ; 11271349) ; 11271349) ; National Natural Science Foundation of China(41325016 ; National Natural Science Foundation of China(41325016 ; R&D of Key Instruments and Technologies for Deep Resources Prospecting (the National R&D Projects for Key Scientific Instruments)(ZDYZ2012-1-02-04) ; R&D of Key Instruments and Technologies for Deep Resources Prospecting (the National R&D Projects for Key Scientific Instruments)(ZDYZ2012-1-02-04) ; 11271349) ; 11271349) ; National Natural Science Foundation of China(41325016 ; National Natural Science Foundation of China(41325016 ; R&D of Key Instruments and Technologies for Deep Resources Prospecting (the National R&D Projects for Key Scientific Instruments)(ZDYZ2012-1-02-04) ; R&D of Key Instruments and Technologies for Deep Resources Prospecting (the National R&D Projects for Key Scientific Instruments)(ZDYZ2012-1-02-04) ; 11271349) ; 11271349) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84806]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Wang, Yanfei |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100864, Peoples R China 2.Univ Cent Florida, Dept Math, Orlando, FL 32816 USA |
| 推荐引用方式 GB/T 7714 | Wang, Yanfei,Liang, Wenquan,Nashed, Zuhair,et al. Seismic modeling by optimizing regularized staggered-grid finite-difference operators using a time-space-domain dispersion-relationship-preserving method[J]. GEOPHYSICS,2014,79(5):T277-T285. |
| APA | Wang, Yanfei,Liang, Wenquan,Nashed, Zuhair,Li, Xiao,Liang, Guanghe,&Yang, Changchun.(2014).Seismic modeling by optimizing regularized staggered-grid finite-difference operators using a time-space-domain dispersion-relationship-preserving method.GEOPHYSICS,79(5),T277-T285. |
| MLA | Wang, Yanfei,et al."Seismic modeling by optimizing regularized staggered-grid finite-difference operators using a time-space-domain dispersion-relationship-preserving method".GEOPHYSICS 79.5(2014):T277-T285. |
入库方式： OAI收割
来源：地质与地球物理研究所
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