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dc.contributor.authorSong, Xiaolei
dc.contributor.authorAlkhalifah, Tariq Ali
dc.date.accessioned2015-05-25T07:57:10Z
dc.date.available2015-05-25T07:57:10Z
dc.date.issued2013-06-04
dc.identifier.citationModeling of pseudoacoustic P-waves in orthorhombic media with a low-rank approximation 2013, 78 (4):C33 GEOPHYSICS
dc.identifier.issn0016-8033
dc.identifier.issn1942-2156
dc.identifier.doi10.1190/geo2012-0144.1
dc.identifier.urihttp://hdl.handle.net/10754/555632
dc.description.abstractWavefield extrapolation in pseudoacoustic orthorhombic anisotropic media suffers from wave-mode coupling and stability limitations in the parameter range. We use the dispersion relation for scalar wave propagation in pseudoacoustic orthorhombic media to model acoustic wavefields. The wavenumber-domain application of the Laplacian operator allows us to propagate the P-waves exclusively, without imposing any conditions on the parameter range of stability. It also allows us to avoid dispersion artifacts commonly associated with evaluating the Laplacian operator in space domain using practical finite-difference stencils. To handle the corresponding space-wavenumber mixed-domain operator, we apply the low-rank approximation approach. Considering the number of parameters necessary to describe orthorhombic anisotropy, the low-rank approach yields space-wavenumber decomposition of the extrapolator operator that is dependent on space location regardless of the parameters, a feature necessary for orthorhombic anisotropy. Numerical experiments that the proposed wavefield extrapolator is accurate and practically free of dispersion. Furthermore, there is no coupling of qSv and qP waves because we use the analytical dispersion solution corresponding to the P-wave.
dc.publisherSociety of Exploration Geophysicists
dc.relation.urlhttp://library.seg.org/doi/abs/10.1190/geo2012-0144.1
dc.rightsArchived with thanks to GEOPHYSICS
dc.subject3D
dc.subjectacoustic
dc.subjectmodeling
dc.subjectP-wave
dc.subjectanisotropy
dc.titleModeling of pseudoacoustic P-waves in orthorhombic media with a low-rank approximation
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.institutionThe University of Texas at Austin, Bureau of Economic Geology, Jackson School of Geosciences, Austin, Texas, USA
kaust.personAlkhalifah, Tariq Ali
refterms.dateFOA2018-06-14T07:56:08Z
dc.date.published-online2013-06-04
dc.date.published-print2013-07


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