Modeling of pseudoacoustic P-waves in orthorhombic media with a low-rank approximation
dc.contributor.author | Song, Xiaolei | |
dc.contributor.author | Alkhalifah, Tariq Ali | |
dc.date.accessioned | 2015-05-25T07:57:10Z | |
dc.date.available | 2015-05-25T07:57:10Z | |
dc.date.issued | 2013-06-04 | |
dc.identifier.citation | Modeling of pseudoacoustic P-waves in orthorhombic media with a low-rank approximation 2013, 78 (4):C33 GEOPHYSICS | |
dc.identifier.issn | 0016-8033 | |
dc.identifier.issn | 1942-2156 | |
dc.identifier.doi | 10.1190/geo2012-0144.1 | |
dc.identifier.uri | http://hdl.handle.net/10754/555632 | |
dc.description.abstract | Wavefield 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.publisher | Society of Exploration Geophysicists | |
dc.relation.url | http://library.seg.org/doi/abs/10.1190/geo2012-0144.1 | |
dc.rights | Archived with thanks to GEOPHYSICS | |
dc.subject | 3D | |
dc.subject | acoustic | |
dc.subject | modeling | |
dc.subject | P-wave | |
dc.subject | anisotropy | |
dc.title | Modeling of pseudoacoustic P-waves in orthorhombic media with a low-rank approximation | |
dc.type | Article | |
dc.contributor.department | Earth Science and Engineering Program | |
dc.contributor.department | Physical Science and Engineering (PSE) Division | |
dc.contributor.department | Seismic Wave Analysis Group | |
dc.identifier.journal | GEOPHYSICS | |
dc.eprint.version | Publisher's Version/PDF | |
dc.contributor.institution | The University of Texas at Austin, Bureau of Economic Geology, Jackson School of Geosciences, Austin, Texas, USA | |
kaust.person | Alkhalifah, Tariq Ali | |
refterms.dateFOA | 2018-06-14T07:56:08Z | |
dc.date.published-online | 2013-06-04 | |
dc.date.published-print | 2013-07 |
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