Structure-preserving modelling of elastic waves: a symplectic discrete singular convolution differentiator method
文献类型：期刊论文
| 作者 | Li, Xiaofan; Wang, Wenshuai; Lu, Mingwen; Zhang, Meigen; Li, Yiqiong |
| 刊名 | GEOPHYSICAL JOURNAL INTERNATIONAL
 |
| 出版日期 | 2012-03-01 |
| 卷号 | 188期号:3页码:1382-1392 |
| 关键词 | Numerical solutions Numerical approximations and analysis Body waves Computational seismology Wave propagation |
| ISSN号 | 0956-540X |
| DOI | 10.1111/j.1365-246X.2011.05344.x |
| 文献子类 | Article |
| 英文摘要 | In this paper, we introduce the so-called symplectic discrete singular convolution differentiator (SDSCD) method for structure-preserving modelling of elastic waves. In the method presented, physical space is discretized by the DSCD, whereas an explicit third-order symplectic scheme is used for the time discretization. This approach uses optimization and truncation to form a localized operator. This preserves the fine structure of the wavefield in complex media and avoids non-causal interaction when parameter discontinuities are present in the medium. Theoretically, the approach presented is a structure-preserving algorithm. Also, some numerical experiments are shown in this paper. Elastic wavefield modelling experiments on a laterally heterogeneous medium with high parameter contrasts demonstrate the superior performance of the SDSCD for suppression of numerical dispersion. Long-term computational experiments exhibit the remarkable capability of the approach presented for long-time simulations. Promising numerical results suggest the SDSCD is suitable for high-precision and long-time numerical simulations, as it has structure-preserving property and it can suppress effectively numerical dispersion when coarse grids are used. |
| WOS关键词 | KUTTA-NYSTROM METHODS ; FOURIER PSEUDOSPECTRAL METHOD ; RUNGE-KUTTA ; CONSERVATION-LAWS ; PROPAGATION ; EQUATIONS ; SIMULATION ; SCHEME ; DOMAIN ; MEDIA |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000300567400042 |
| 出版者 | WILEY-BLACKWELL |
| 资助机构 | National Natural Science Foundation of China(40437018 ; National Natural Science Foundation of China(40437018 ; Ministry of Science and Technology of People's Republic of China(2007CB209603) ; Ministry of Science and Technology of People's Republic of China(2007CB209603) ; 40874024 ; 40874024 ; 41174047) ; 41174047) ; National Natural Science Foundation of China(40437018 ; National Natural Science Foundation of China(40437018 ; Ministry of Science and Technology of People's Republic of China(2007CB209603) ; Ministry of Science and Technology of People's Republic of China(2007CB209603) ; 40874024 ; 40874024 ; 41174047) ; 41174047) ; National Natural Science Foundation of China(40437018 ; National Natural Science Foundation of China(40437018 ; Ministry of Science and Technology of People's Republic of China(2007CB209603) ; Ministry of Science and Technology of People's Republic of China(2007CB209603) ; 40874024 ; 40874024 ; 41174047) ; 41174047) ; National Natural Science Foundation of China(40437018 ; National Natural Science Foundation of China(40437018 ; Ministry of Science and Technology of People's Republic of China(2007CB209603) ; Ministry of Science and Technology of People's Republic of China(2007CB209603) ; 40874024 ; 40874024 ; 41174047) ; 41174047) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84248]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Li, Xiaofan |
| 作者单位 | Chinese Acad Sci, Key Lab Earths Deep Interior, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xiaofan,Wang, Wenshuai,Lu, Mingwen,et al. Structure-preserving modelling of elastic waves: a symplectic discrete singular convolution differentiator method[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2012,188(3):1382-1392. |
| APA | Li, Xiaofan,Wang, Wenshuai,Lu, Mingwen,Zhang, Meigen,&Li, Yiqiong.(2012).Structure-preserving modelling of elastic waves: a symplectic discrete singular convolution differentiator method.GEOPHYSICAL JOURNAL INTERNATIONAL,188(3),1382-1392. |
| MLA | Li, Xiaofan,et al."Structure-preserving modelling of elastic waves: a symplectic discrete singular convolution differentiator method".GEOPHYSICAL JOURNAL INTERNATIONAL 188.3(2012):1382-1392. |
入库方式： OAI收割
来源：地质与地球物理研究所
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