Simulating Seismic Wave Propagation in Viscoelastic Media with an Irregular Free Surface

doi:10.1007/s00024-018-1879-9

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	Simulating Seismic Wave Propagation in Viscoelastic Media with an Irregular Free Surface
	Liu, Xiaobo 1; Chen, Jingyi 1; Zhao, Zhencong 1; Lan, Haiqiang 2; Liu, Fuping 3
刊名	PURE AND APPLIED GEOPHYSICS
	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.
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关键词	PERFECTLY MATCHED LAYER ; FINITE-DIFFERENCE METHOD ; FIELD SIMULATION ; RAYLEIGH-WAVES ; ELASTIC-WAVES ; EQUATION ; TOPOGRAPHY ; PML ; PLANE
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SPRINGER BASEL AG
WOS记录号	WOS:000447266800003
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
内容类型	期刊论文
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.