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	Modeling of frequency-domain elastic-wave equation with a general optimal scheme
	Li, Aman1,2,3; Liu, Hong1,2,3; Yuan, Yuxin1,2,3; Hu, Ting1,2,3; Guo, Xuebao1,2,3,4
刊名	JOURNAL OF APPLIED GEOPHYSICS
	2018-12-01
卷号	159页码:1-15
关键词	Elastic wave Frequency-domain modeling Optimization
ISSN号	0926-9851
DOI	10.1016/j.jappgeo.2018.07.014
英文摘要	Frequency-domain numerical modeling is an important foundation of frequency-domain full waveform inversion.However, the conventional 9-point scheme for frequency-domain 2D elastic-wave equation requires lots of sampling grid points but with limited precision. In this paper, we develop a general optimal 9-point scheme for frequency-domain 2D elastic-wave equation to reduce sampling grid points and improve the accuracy.The numerical dispersion analysis shows that this scheme can effectively reduce the grid point of per wavelength. The new scheme can be applied to equal and unequal spatial sampling intervals, which is convenient for their applications in practice Accuracy analysis demonstrates that the results of the optimal nine-point scheme are in better agreement with the analytic solutions relative to the conventional 9-point scheme.We deduce the perfectly matched layer (PML) absorbing boundary condition to eliminate the artificial boundary influence.Two numerical examples are used to demonstrate the effectiveness of the general optimal scheme for frequency-domainelastic-wave equation. (C) 2018 Elsevier B.V. All rights reserved.
资助项目	Major State Research Development Program of China[2016YFC0601101] ; National Natural Science Foundation of China[41630319]
WOS关键词	FINITE-DIFFERENCE ; INVERSION ; SCALAR ; SPACE
WOS研究方向	Geology ; Mining & Mineral Processing
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000453644600001
资助机构	Major State Research Development Program of China ; Major State Research Development Program of China ; Major State Research Development Program of China ; Major State Research Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major State Research Development Program of China ; Major State Research Development Program of China ; Major State Research Development Program of China ; Major State Research Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major State Research Development Program of China ; Major State Research Development Program of China ; Major State Research Development Program of China ; Major State Research Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major State Research Development Program of China ; Major State Research Development Program of China ; Major State Research Development Program of China ; Major State Research Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/90298]
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	Li, Aman
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Northeast Petr Univ, Sch Earth Sci, Daqing 163318, Peoples R China
推荐引用方式 GB/T 7714	Li, Aman,Liu, Hong,Yuan, Yuxin,et al. Modeling of frequency-domain elastic-wave equation with a general optimal scheme[J]. JOURNAL OF APPLIED GEOPHYSICS,2018,159:1-15.
APA	Li, Aman,Liu, Hong,Yuan, Yuxin,Hu, Ting,&Guo, Xuebao.(2018).Modeling of frequency-domain elastic-wave equation with a general optimal scheme.JOURNAL OF APPLIED GEOPHYSICS,159,1-15.
MLA	Li, Aman,et al."Modeling of frequency-domain elastic-wave equation with a general optimal scheme".JOURNAL OF APPLIED GEOPHYSICS 159(2018):1-15.

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