Simulating Seismic Wave Propagation in Viscoelastic Media with an Irregular Free Surface
文献类型：期刊论文
| 作者 | Liu, Xiaobo1; Chen, Jingyi1; Zhao, Zhencong1; Lan, Haiqiang2; Liu, Fuping3 |
| 刊名 | PURE AND APPLIED GEOPHYSICS
 |
| 出版日期 | 2018-10-01 |
| 卷号 | 175期号:10页码:3419-3439 |
| 关键词 | Irregular free surface viscoelastic wavefield simulation convolutional perfectly matched layer |
| ISSN号 | 0033-4553 |
| DOI | 10.1007/s00024-018-1879-9 |
| 英文摘要 | In seismic numerical simulations of wave propagation, it is very important for us to consider surface topography and attenuation, which both have large effects (e.g., wave diffractions, conversion, amplitude/phase change) on seismic imaging and inversion. An irregular free surface provides significant information for interpreting the characteristics of seismic wave propagation in areas with rugged or rapidly varying topography, and viscoelastic media are a better representation of the earth's properties than acoustic/elastic media. In this study, we develop an approach for seismic wavefield simulation in 2D viscoelastic isotropic media with an irregular free surface. Based on the boundary-conforming grid method, the 2D time-domain second-order viscoelastic isotropic equations and irregular free surface boundary conditions are transferred from a Cartesian coordinate system to a curvilinear coordinate system. Finite difference operators with second-order accuracy are applied to discretize the viscoelastic wave equations and the irregular free surface in the curvilinear coordinate system. In addition, we select the convolutional perfectly matched layer boundary condition in order to effectively suppress artificial reflections from the edges of the model. The snapshot and seismogram results from numerical tests show that our algorithm successfully simulates seismic wavefields (e.g., P-wave, Rayleigh wave and converted waves) in viscoelastic isotropic media with an irregular free surface. |
| WOS关键词 | PERFECTLY MATCHED LAYER ; FINITE-DIFFERENCE METHOD ; FIELD SIMULATION ; RAYLEIGH-WAVES ; ELASTIC-WAVES ; EQUATION ; TOPOGRAPHY ; PML ; PLANE |
| 资助项目 | Faculty Internationalization Grant at The University of Tulsa ; Beijing City Board of Education Science and Technology Key Project[KZ201510015015] ; Beijing City Board of Education Science and Technology Key Project[PXM2016_014223_000025] ; Beijing City Board of Education Science and Technology Project[KM201510015009] ; Natural Science Foundation of Beijing[4142016] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000447266800003 |
| 出版者 | SPRINGER BASEL AG |
| 资助机构 | Faculty Internationalization Grant at The University of Tulsa ; Faculty Internationalization Grant at The University of Tulsa ; Beijing City Board of Education Science and Technology Key Project ; Beijing City Board of Education Science and Technology Key Project ; Beijing City Board of Education Science and Technology Project ; Beijing City Board of Education Science and Technology Project ; Natural Science Foundation of Beijing ; Natural Science Foundation of Beijing ; Faculty Internationalization Grant at The University of Tulsa ; Faculty Internationalization Grant at The University of Tulsa ; Beijing City Board of Education Science and Technology Key Project ; Beijing City Board of Education Science and Technology Key Project ; Beijing City Board of Education Science and Technology Project ; Beijing City Board of Education Science and Technology Project ; Natural Science Foundation of Beijing ; Natural Science Foundation of Beijing ; Faculty Internationalization Grant at The University of Tulsa ; Faculty Internationalization Grant at The University of Tulsa ; Beijing City Board of Education Science and Technology Key Project ; Beijing City Board of Education Science and Technology Key Project ; Beijing City Board of Education Science and Technology Project ; Beijing City Board of Education Science and Technology Project ; Natural Science Foundation of Beijing ; Natural Science Foundation of Beijing ; Faculty Internationalization Grant at The University of Tulsa ; Faculty Internationalization Grant at The University of Tulsa ; Beijing City Board of Education Science and Technology Key Project ; Beijing City Board of Education Science and Technology Key Project ; Beijing City Board of Education Science and Technology Project ; Beijing City Board of Education Science and Technology Project ; Natural Science Foundation of Beijing ; Natural Science Foundation of Beijing |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/89190]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Chen, Jingyi |
| 作者单位 | 1.Univ Tulsa, Dept Geosci, Seism Anisotropy Grp, Tulsa, OK 74104 USA 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Beijing Inst Graph Commun, Beijing 102600, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Xiaobo,Chen, Jingyi,Zhao, Zhencong,et al. Simulating Seismic Wave Propagation in Viscoelastic Media with an Irregular Free Surface[J]. PURE AND APPLIED GEOPHYSICS,2018,175(10):3419-3439. |
| APA | Liu, Xiaobo,Chen, Jingyi,Zhao, Zhencong,Lan, Haiqiang,&Liu, Fuping.(2018).Simulating Seismic Wave Propagation in Viscoelastic Media with an Irregular Free Surface.PURE AND APPLIED GEOPHYSICS,175(10),3419-3439. |
| MLA | Liu, Xiaobo,et al."Simulating Seismic Wave Propagation in Viscoelastic Media with an Irregular Free Surface".PURE AND APPLIED GEOPHYSICS 175.10(2018):3419-3439. |
入库方式： OAI收割
来源：地质与地球物理研究所
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