IGGCAS OpenIR  > 油气资源研究院重点实验室
Frequency-domain elastic-wave modeling for polygonal topography using rotated average-derivative difference operators
Li, Zheng1,2,3; Chen, Jing-Bo1,2,3; Cao, Jian1,2
2020-10-01
Source PublicationACTA GEOPHYSICA
ISSN1895-6572
Volume68Issue:5Pages:1387-1409
AbstractModeling of seismic wave propagation in areas with irregular topography is an important topic in the field of seismic exploration. As a popular numerical method for seismic modeling, the finite difference method is nontrivial to consider the irregular free surface. There have been extensive studies on the time-domain finite difference simulations with irregular topography; however, the frequency-domain finite difference simulation considering irregular topography is relatively less studied. The average-derivative approach is an optimal numerical simulation scheme in the frequency domain, which can produce accurate modeling results at a relatively low computational cost. Nevertheless, this approach can only deal with the modeling problems with a flat free surface. To address this issue, we design a new frequency-domain finite difference scheme by introducing the polygonal representation of topography into the average-derivative method. The irregular topography is represented by line segments with various slopes. An extension of the conventional average-derivative difference operator in the local rotated coordinate system is used for formulating the spatial derivatives aligned with the topographic line segments. As a result, new average-derivative difference schemes are obtained for irregular topography. In this way, the average-derivative optimal method is generalized to the model with irregular topography. Numerical examples show the effectiveness of the presented method.
KeywordIrregular topography Frequency-domain modeling Rotated coordinate system Average-derivative difference scheme
DOI10.1007/s11600-020-00481-6
Funding OrganizationNational Natural Science Foundation 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 ; National Natural Science Foundation 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 ; National Natural Science Foundation 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 ; National Natural Science Foundation of China
WOS KeywordFREE-BOUNDARY CONDITIONS ; SURFACE-TOPOGRAPHY ; PROPAGATION ; SIMULATION ; MEDIA
Language英语
Funding ProjectNational Natural Science Foundation of China[41874163] ; National Natural Science Foundation of China[41674132]
Funding OrganizationNational Natural Science Foundation 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 ; National Natural Science Foundation 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 ; National Natural Science Foundation 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 ; National Natural Science Foundation of China
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000570835100001
PublisherSPRINGER INTERNATIONAL PUBLISHING AG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/98263
Collection油气资源研究院重点实验室
Corresponding AuthorLi, Zheng
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationKey Laboratory of Petroleum Resource Research, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Petroleum Resource Research, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li, Zheng,Chen, Jing-Bo,Cao, Jian. Frequency-domain elastic-wave modeling for polygonal topography using rotated average-derivative difference operators[J]. ACTA GEOPHYSICA,2020,68(5):1387-1409.
APA Li, Zheng,Chen, Jing-Bo,&Cao, Jian.(2020).Frequency-domain elastic-wave modeling for polygonal topography using rotated average-derivative difference operators.ACTA GEOPHYSICA,68(5),1387-1409.
MLA Li, Zheng,et al."Frequency-domain elastic-wave modeling for polygonal topography using rotated average-derivative difference operators".ACTA GEOPHYSICA 68.5(2020):1387-1409.
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