Wave-field simulation in VTI media with irregular free surface
文献类型：期刊论文
| 作者 | Lan Hai-Qiang1,2; Liu Jia1,2; Bai Zhi-Ming1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2011-08-01 |
| 卷号 | 54期号:8页码:2072-2084 |
| 关键词 | Irregular Free Surface Anisotropy Curvilinear Grids Wave-field Simulation Finite-difference |
| ISSN号 | 0001-5733 |
| DOI | 10.3969/j.issn.0001-5733.2011.08.014 |
| 文献子类 | Article |
| 英文摘要 | Modeling of seismic wave propagation in anisotropic media with irregular topography is a powerful tool that may help to interpret seismic data acquired by active and passive source seismology conducted in areas of interest like mountain ranges and basins. The major challenge in this context is the numerical implementation of the free-surface boundary condition. To implement the free-surface boundary condition, we use the boundary-conforming grid and transform a rectangular grid onto a curved grid. We use a stable and explicit second-order finite difference scheme to discretize the elastic wave equations (in a curvilinear coordinate system) in heterogeneous anisotropic medium. The free-surface boundary conditions are numerically implemented by introducing a discretization that uses boundary-modified difference operators for the mixed derivatives in the governing equations. The accuracy of the proposed method is checked by comparing the numerical results obtained by the trial algorithm with the analytical solution of the Lamb's problem, for a transversely isotropic medium with a vertical symmetry axis. Efficiency tests performed by different numerical experiments illustrate clearly the influence of an irregular (non-flat) free surface on seismic wave propagation. |
| WOS关键词 | FINITE-DIFFERENCE METHOD ; CORRECTED TRANSPORT TECHNIQUE ; SPECTRAL ELEMENT METHOD ; ANISOTROPIC MEDIA ; BOUNDARY-CONDITION ; ELASTIC-WAVES ; SEISMIC-WAVES ; LAYERED MEDIA ; QUARTER PLANE ; PROPAGATION |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000294516600014 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/73664]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Lan Hai-Qiang |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Lithospher Evolut, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lan Hai-Qiang,Liu Jia,Bai Zhi-Ming. Wave-field simulation in VTI media with irregular free surface[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2011,54(8):2072-2084. |
| APA | Lan Hai-Qiang,Liu Jia,&Bai Zhi-Ming.(2011).Wave-field simulation in VTI media with irregular free surface.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,54(8),2072-2084. |
| MLA | Lan Hai-Qiang,et al."Wave-field simulation in VTI media with irregular free surface".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 54.8(2011):2072-2084. |
入库方式： OAI收割
来源：地质与地球物理研究所
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