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dc.contributor.authorCheng, Jiubing
dc.contributor.authorAlkhalifah, Tariq Ali
dc.contributor.authorWu, Zedong
dc.contributor.authorZou, Peng
dc.contributor.authorWang, Chenlong
dc.date.accessioned2016-04-10T13:36:51Z
dc.date.available2016-04-10T13:36:51Z
dc.date.issued2016-03-15
dc.identifier.citationSimulating propagation of decoupled elastic waves using low-rank approximate mixed-domain integral operators for anisotropic media 2016, 81 (2):T63 GEOPHYSICS
dc.identifier.issn0016-8033
dc.identifier.issn1942-2156
dc.identifier.doi10.1190/geo2015-0184.1
dc.identifier.urihttp://hdl.handle.net/10754/604975
dc.description.abstractIn elastic imaging, the extrapolated vector fields are decoupled into pure wave modes, such that the imaging condition produces interpretable images. Conventionally, mode decoupling in anisotropic media is costly because the operators involved are dependent on the velocity, and thus they are not stationary. We have developed an efficient pseudospectral approach to directly extrapolate the decoupled elastic waves using low-rank approximate mixed-domain integral operators on the basis of the elastic displacement wave equation. We have applied k-space adjustment to the pseudospectral solution to allow for a relatively large extrapolation time step. The low-rank approximation was, thus, applied to the spectral operators that simultaneously extrapolate and decompose the elastic wavefields. Synthetic examples on transversely isotropic and orthorhombic models showed that our approach has the potential to efficiently and accurately simulate the propagations of the decoupled quasi-P and quasi-S modes as well as the total wavefields for elastic wave modeling, imaging, and inversion.
dc.description.sponsorshipWe would like to thank S. Fomel for sharing his experience in designing low-rank approximate algorithms for wave propagation. The first author appreciates T. F. Wang and J. Z. Sun for their useful discussion in this study. We acknowledge supports from the National Natural Science Foundation of China (no. 41474099) and Shanghai Natural Science Foundation (no. 14ZR1442900). This paper is also based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under award no. 2230. We thank SEG, BP, and HESS Corporation for making the 2D VTI and TTI models available.
dc.language.isoen
dc.publisherSociety of Exploration Geophysicists
dc.relation.urlhttp://library.seg.org/doi/10.1190/geo2015-0184.1
dc.rightsArchived with thanks to GEOPHYSICS
dc.subjectanisotropy
dc.subjectelastic
dc.subjectdecomposition
dc.subjectwave propagation
dc.subjectpolarization
dc.titleSimulating propagation of decoupled elastic waves using low-rank approximate mixed-domain integral operators for anisotropic media
dc.typeArticle
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentSeismic Wave Analysis Group
dc.identifier.journalGEOPHYSICS
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionTongji University, State Key Laboratory of Marine Geology, Shanghai, China
dc.contributor.institutionTongji University, Shanghai, China
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personAlkhalifah, Tariq Ali
kaust.personWu, Zedong
refterms.dateFOA2018-06-13T11:39:14Z
kaust.acknowledged.supportUnitOffice of Sponsored Research
dc.date.published-online2016-03-15
dc.date.published-print2016-03


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