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dc.contributor.authorWang, W.en_US
dc.contributor.authorHua, B.en_US
dc.contributor.authorMcMechan, George A.en_US
dc.contributor.authorDuquet, B.en_US
dc.date.accessioned2018-09-14T19:18:14Z
dc.date.available2018-09-14T19:18:14Z
dc.date.created2017-11-13
dc.date.issued2017-11-13en_US
dc.identifier.issn0016-8033en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/6080
dc.description.abstractWe have developed a P- and S-wave decomposition algorithm based on windowed Fourier transforms and a localized low-rank approximation with improved scalability and efficiency for anisotropic wavefields. The model and wavefield are divided into rectangular blocks that do not have to be geologically constrained; low-rank approximations and P- and S-decomposition are performed separately in each block. An overlap-add method reduces artifacts at block boundaries caused by Fourier transforms at wavefield truncations; limited communication is required between blocks. Localization allows a lower rank to be used than global lowrank approximations while maintaining the same quality of decomposition. The algorithm is scalable, making P- and S-decomposition possible in complicated 3D models. Tests with 2D and 3D synthetic data indicate good P- and S-decomposition results.en_US
dc.language.isoenen_US
dc.publisherSociety of Exploration Geophysicistsen_US
dc.relation.urihttp://dx.doi.org/10.1190/GEO2017-0138.1
dc.rights©2018 Society of Exploration Geophysicists. All Rights Reserved.en_US
dc.sourceGeophysics
dc.subjectAnisotropyen_US
dc.subjectApproximation algorithmsen_US
dc.subjectApproximation theoryen_US
dc.subjectShear wavesen_US
dc.subjectThree-dimensional imaging in geologyen_US
dc.subjectShear wavesen_US
dc.subjectWindowed fourier transformsen_US
dc.subjectFourier transformationsen_US
dc.subjectAlgorithmsen_US
dc.titleP- and S-Decomposition in Anisotropic Media with Localized Low-Rank Approximationsen_US
dc.type.genrearticleen_US
dc.description.departmentSchool of Natural Sciences and Mathematicsen_US
dc.identifier.bibliographicCitationWang, W., B. Hua, G. A. McMechan, and B. Duquet. 2018. "P- and S-decomposition in anisotropic media with localized low-rank approximations." Geophysics 83(1): C13-C26.en_US
dc.identifier.volume83en_US
dc.identifier.issue1en_US
dc.contributor.utdAuthorMcMechan, George A.en_US
dc.contributor.VIAF103911551 (McMechan, GA)en_US


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