Seismic modeling with an optimal staggered-grid finite-difference scheme based on combining Taylor-series expansion and minimax approximation

doi:10.1007/s11200-016-1152-6

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 > 中国科学院油气资源研究重点实验室

	Seismic modeling with an optimal staggered-grid finite-difference scheme based on combining Taylor-series expansion and minimax approximation
	Yan, Hongyong 1; Yang, Lei 2
刊名	STUDIA GEOPHYSICA ET GEODAETICA
	2017-07-01
卷号	61 期号:3 页码:560-574
关键词	seismic wave numerical modeling dispersion analysis numerical accuracy
ISSN号	0039-3169
DOI	10.1007/s11200-016-1152-6
文献子类	Article
英文摘要	Staggered-grid finite-difference (SGFD) schemes have been used widely in seismic modeling. The spatial difference coefficients of the SGFD scheme are generally determined by a Taylor-series expansion (TE) method or optimization methods. However, high accuracy is hardly guaranteed both at small and large wavenumbers by using these conventional methods. We propose a new optimal SGFD scheme based on combining TE and minimax approximation (MA) for high accuracy modeling. The optimal spatial SGFD coefficients are calculated by applying a combination of TE and MA to the dispersion relation, where the implementation of the MA method is based on a Remez algorithm. We adopt the optimal SGFD coefficients to solve first-order spatial derivatives of the elastic wave equations and then perform numerical modeling. Dispersion analyses and seismic modeling show the advantage of the proposed optimal method. The optimal SGFD scheme has greater accuracy than the TE-based SGFD scheme for the same spatial difference operator length. In addition, the optimal SGFD scheme can also adopt a shorter operator length to achieve the high accuracy reducing the computational cost.
WOS关键词	TIME-SPACE-DOMAIN ; WAVE-EQUATION ; SAMPLING APPROXIMATION ; LEAST-SQUARES ; PROPAGATION ; SEISMOGRAMS ; OPERATORS ; CRITERIA ; MISFIT ; MOTION
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000406827400009
资助机构	National Natural Science Foundation of China(41404112 ; International Postdoctoral Exchange Fellowship Program(20140047) ; Edinburgh Anisotropy Project of the British Geological Survey ; 41630319) ; National Natural Science Foundation of China(41404112 ; International Postdoctoral Exchange Fellowship Program(20140047) ; Edinburgh Anisotropy Project of the British Geological Survey ; 41630319) ; National Natural Science Foundation of China(41404112 ; International Postdoctoral Exchange Fellowship Program(20140047) ; Edinburgh Anisotropy Project of the British Geological Survey ; 41630319) ; National Natural Science Foundation of China(41404112 ; International Postdoctoral Exchange Fellowship Program(20140047) ; Edinburgh Anisotropy Project of the British Geological Survey ; 41630319)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/61833]
专题	地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者	Yan, Hongyong
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beitucheng Western Rd 19, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yan, Hongyong,Yang, Lei. Seismic modeling with an optimal staggered-grid finite-difference scheme based on combining Taylor-series expansion and minimax approximation[J]. STUDIA GEOPHYSICA ET GEODAETICA,2017,61(3):560-574.
APA	Yan, Hongyong,&Yang, Lei.(2017).Seismic modeling with an optimal staggered-grid finite-difference scheme based on combining Taylor-series expansion and minimax approximation.STUDIA GEOPHYSICA ET GEODAETICA,61(3),560-574.
MLA	Yan, Hongyong,et al."Seismic modeling with an optimal staggered-grid finite-difference scheme based on combining Taylor-series expansion and minimax approximation".STUDIA GEOPHYSICA ET GEODAETICA 61.3(2017):560-574.