A simplified staggered-grid finite-difference scheme and its linear solution for the first-order acoustic wave-equation modeling

doi:10.1016/j.jcp.2018.08.011

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

	A simplified staggered-grid finite-difference scheme and its linear solution for the first-order acoustic wave-equation modeling
	Liang, Wenquan 1; Wu, Xiu 2; Wang, Yanfei 3; Yang, Changchun 3
刊名	JOURNAL OF COMPUTATIONAL PHYSICS
	2018-12-01
卷号	374 页码:863-872
关键词	Staggered-grid Finite-difference scheme Numerical dispersion Acoustic wave-equation modeling
ISSN号	0021-9991
DOI	10.1016/j.jcp.2018.08.011
英文摘要	First-order staggered-grid finite-difference methods are widely used to synthesize seismograms theoretically. They are also the basis of least-squares reverse time migration and full waveform inversion. It is important to accelerate the wave-equation simulation while still preserving high accuracy. Usually the same staggered-grid finite difference operator is used for all of the first-order spatial derivatives in the first-order acoustic wave-equation. In this paper, we propose a simplified staggered-grid finite-difference scheme which uses different finite-difference operators for different first-order spatial derivatives in the first-order acoustic wave-equation. Because the new dispersion relation is linear, the staggered-grid finite-difference coefficients are determined in the time-space domain with the previously proposed linear method. We demonstrate by dispersion analysis and numerical simulation the efficiency of the proposed method. (C) 2018 Elsevier Inc. All rights reserved.
资助项目	National Natural Science Foundation of China[91630202] ; National Natural Science Foundation of China[41704020] ; National Natural Science Foundation of China[41674114] ; Fujian Science and Technology Department[2016J05104] ; Scientific Research Foundation of Longyan University for Doctors[LB2014010] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB10020100]
WOS关键词	TIME-SPACE-DOMAIN ; HETEROGENEOUS MEDIA ; PROPAGATION ; VELOCITY ; DISPERSION ; OPERATORS
WOS研究方向	Computer Science ; Physics
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000447904200039
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fujian Science and Technology Department ; Fujian Science and Technology Department ; Scientific Research Foundation of Longyan University for Doctors ; Scientific Research Foundation of Longyan University for Doctors ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fujian Science and Technology Department ; Fujian Science and Technology Department ; Scientific Research Foundation of Longyan University for Doctors ; Scientific Research Foundation of Longyan University for Doctors ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fujian Science and Technology Department ; Fujian Science and Technology Department ; Scientific Research Foundation of Longyan University for Doctors ; Scientific Research Foundation of Longyan University for Doctors ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fujian Science and Technology Department ; Fujian Science and Technology Department ; Scientific Research Foundation of Longyan University for Doctors ; Scientific Research Foundation of Longyan University for Doctors ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/89133]
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	Wang, Yanfei
作者单位	1.Longyan Univ, Coll Resource Engn, Longyan 364000, Peoples R China 2.Longyan Univ, Logist & Infrastruct Management Dept, Longyan 364000, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Liang, Wenquan,Wu, Xiu,Wang, Yanfei,et al. A simplified staggered-grid finite-difference scheme and its linear solution for the first-order acoustic wave-equation modeling[J]. JOURNAL OF COMPUTATIONAL PHYSICS,2018,374:863-872.
APA	Liang, Wenquan,Wu, Xiu,Wang, Yanfei,&Yang, Changchun.(2018).A simplified staggered-grid finite-difference scheme and its linear solution for the first-order acoustic wave-equation modeling.JOURNAL OF COMPUTATIONAL PHYSICS,374,863-872.
MLA	Liang, Wenquan,et al."A simplified staggered-grid finite-difference scheme and its linear solution for the first-order acoustic wave-equation modeling".JOURNAL OF COMPUTATIONAL PHYSICS 374(2018):863-872.