Methods to determine the finite difference coefficients for elastic wave equation modeling
文献类型：期刊论文
| 作者 | Xin Wei1,2; Yan Zi-Chao1,2; Liang Wen-Quan1; Chen Yu-Hong1; Yang Chang-Chun1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2015-07-01 |
| 卷号 | 58期号:7页码:2486-2495 |
| 关键词 | Elastic wave equation Numerical simulation Linear method Simulated annealing |
| DOI | 10.6038/cjg20150724 |
| 文献子类 | Article |
| 英文摘要 | Numerical simulation of the elastic wave equation with staggered-grid finite-difference algorithms is widely used to synthesize seismograms theoretically, and is also the basis of the reverse time migration. With some stability conditions, grid dispersion often appears because of the discretization of the time and the spatial derivatives in the wave equation. How to suppress the grid dispersion is therefore a key problem for finite-difference approaches. Different methods have been proposed to address this issue. The most commonly used methods are the high order Taylor expansion (TE) methods. In this paper, we extend the linear method for solving the acoustic wave equation to the staggered grid finite difference method for solving the elastic wave equation. We also apply the maximum-minimum criterion to measure the dispersion error when performing simulated annealing (SA) algorithm. Dispersion analysis and numerical simulation demonstrate that a linear method without iteration is nearly equal to the SA method and the least squares (LS) method in the space domain, and is better than the TE methods. |
| WOS关键词 | REVERSE-TIME MIGRATION ; PROPAGATION ; MEDIA ; SEISMOGRAMS ; SCHEMES |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000359506000024 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/62291]  |
| 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 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xin Wei,Yan Zi-Chao,Liang Wen-Quan,et al. Methods to determine the finite difference coefficients for elastic wave equation modeling[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2015,58(7):2486-2495. |
| APA | Xin Wei,Yan Zi-Chao,Liang Wen-Quan,Chen Yu-Hong,&Yang Chang-Chun.(2015).Methods to determine the finite difference coefficients for elastic wave equation modeling.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,58(7),2486-2495. |
| MLA | Xin Wei,et al."Methods to determine the finite difference coefficients for elastic wave equation modeling".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 58.7(2015):2486-2495. |
入库方式： OAI收割
来源：地质与地球物理研究所
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