Finite-difference modelling in two-dimensional anisotropic media using a flux-corrected transport technique
文献类型：期刊论文
| 作者 | Yang, DH; Liu, E; Zhang, ZJ; Teng, J |
| 刊名 | GEOPHYSICAL JOURNAL INTERNATIONAL
 |
| 出版日期 | 2002-02-01 |
| 卷号 | 148期号:2页码:320-328 |
| 关键词 | anisotropic wave propagation finite-difference method flux-corrected transport technique synthetic seismograms |
| ISSN号 | 0956-540X |
| 文献子类 | Article |
| 英文摘要 | The conventional finite-difference (FD) method often suffers from numerical dispersion when too few samples per wavelength are used or when models have large velocity contrast, or artefacts caused by source at grid points. In this paper, we present a fast finite-difference scheme that is based on the application of vectors and matrices in 2-D anisotropic media, and obtain the stability equations. Our method is based on a flux-corrected transport (FCT) technique, originating from hydrodynamics, which can be incorporated in the conventional finite-difference method to eliminate the numerical dispersion and source-generated noises. An n-times decoupled absorbing boundary condition is used in our study. Three-component seismograms in a transversely isotropic medium with a vertical symmetry axis (TIV) are generated for two models using the FCT finite-difference modelling. Compared with the results of the reflectivity method and the conventional FD method without the FCT technique and any absorbing boundary treatments, we conclude that our FCT based FD method can is very accurate and efficient in computing synthetic seismograms in general heterogeneous and anisotropic media. |
| WOS关键词 | ABSORBING BOUNDARY-CONDITIONS ; TRANSVERSELY ISOTROPIC MEDIA ; REFLECTIVITY TECHNIQUE ; WAVE-PROPAGATION ; EQUATION |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000174059500012 |
| 出版者 | BLACKWELL PUBLISHING LTD |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/77981]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Yang, DH |
| 作者单位 | 1.Tsing Hua Univ, Dept Math, Beijing 100084, Peoples R China 2.British Geol Survey, Murchison House, Edinburgh EH9 3LA, Midlothian, Scotland 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, DH,Liu, E,Zhang, ZJ,et al. Finite-difference modelling in two-dimensional anisotropic media using a flux-corrected transport technique[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2002,148(2):320-328. |
| APA | Yang, DH,Liu, E,Zhang, ZJ,&Teng, J.(2002).Finite-difference modelling in two-dimensional anisotropic media using a flux-corrected transport technique.GEOPHYSICAL JOURNAL INTERNATIONAL,148(2),320-328. |
| MLA | Yang, DH,et al."Finite-difference modelling in two-dimensional anisotropic media using a flux-corrected transport technique".GEOPHYSICAL JOURNAL INTERNATIONAL 148.2(2002):320-328. |
入库方式： OAI收割
来源：地质与地球物理研究所
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