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• W2515674705 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2016Recursive integral time extrapolation of elastic waves using lowrank approximationAuthors: Junzhe SunSergey FomelYanadet SripanichPaul FowlerJunzhe SunUniversity of Texas—AustinSearch for more papers by this author, Sergey FomelUniversity of Texas—AustinSearch for more papers by this author, Yanadet SripanichJackson School of Geosciences, University of Texas—AustinSearch for more papers by this author, and Paul FowlerWesternGecoSearch for more papers by this authorhttps://doi.org/10.1190/segam2016-13958226.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Conventional solutions of elastic wave equations rely on inaccurate finite-difference approximations of the time derivative, which result in strict dispersion and stability conditions and limitations. In this work, we derive a general solution to the elastic anisotropic wave equation, in the form of a Fourier Integral Operator (FIO). The proposed method is a generalization of the previously developed recursive integral time extrapolation operators from acoustic to elastic media, and can accurately propagate waves in time using the form of the analytical solution in homogeneous media. The formulation is closely connected to elastic wave mode decomposition, and can be applied to the most general anisotropic medium. The numerical calculation of the FIO makes use of lowrank approximation to enable highly accurate and stable wave extrapolations. Numerical examples include wave propagation in 3D heterogeneous orthorhombic and triclinic models. Presentation Date: Monday, October 17, 2016 Start Time: 1:00:00 PM Location: 171/173 Presentation Type: ORAL Keywords: anisotropy, decomposition, elastic, extrapolation, fourierPermalink: https://doi.org/10.1190/segam2016-13958226.1FiguresReferencesRelatedDetailsCited by3D waveform inversion of downhole microseismic data for transversely isotropic media21 August 2019 | Geophysical Prospecting, Vol. 67, No. 9Scalar wavefield time domain propagation in tilted orthorhombic media with Fourier finite differencesXiaolei Song10 August 20193D waveform inversion of microseismic data for VTI mediaOscar Jarillo Michel and Ilya Tsvankin27 August 2018P- and S-decomposition in anisotropic media with localized low-rank approximationsWenlong Wang, Biaolong Hua, George A. McMechan, and Bertrand Duquet13 November 2017 | GEOPHYSICS, Vol. 83, No. 1SP- and SS-imaging for 3D elastic reverse time migrationXufei Gong, Qizhen Du, and Qiang Zhao12 December 2017 | GEOPHYSICS, Vol. 83, No. 1Pseudo-spectral method using rotated staggered grid for elastic wave propagation in 3D arbitrary anisotropic media6 June 2017 | Geophysical Prospecting, Vol. 66, No. 1Elastic wave-vector decomposition in heterogeneous anisotropic media19 December 2016 | Geophysical Prospecting, Vol. 65, No. 5Scalar-wavefield time-domain propagation in 3D TTI media with Fourier finite differencesXiaolei Song17 August 2017Iterative microseismic event location and VTI velocity analysis using 3D waveform inversionOscar Jarillo Michel and Ilya Tsvankin17 August 2017A new staggered-grid scheme for decoupled elastic-wave modeling based on low-rank finite-difference methodYuxin Yuan, Hong Liu, Hu Ting, and Zhiyang Wang17 August 2017Anisotropy Complete Session17 August 2017Diffraction Imaging and Modeling and Seismic Modeling Complete Session17 August 2017 SEG Technical Program Expanded Abstracts 2016ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2016 Pages: 5654 publication data© 2016 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 01 Sep 2016 CITATION INFORMATION Junzhe Sun, Sergey Fomel, Yanadet Sripanich, and Paul Fowler, (2016), Recursive integral time extrapolation of elastic waves using lowrank approximation, SEG Technical Program Expanded Abstracts : 4145-4151. https://doi.org/10.1190/segam2016-13958226.1 Plain-Language Summary KeywordsanisotropydecompositionelasticextrapolationfourierPDF DownloadLoading ..." @default.
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