A fast pointwise strategy for anisotropic wave-mode separation in TI media

Handle URI:
http://hdl.handle.net/10754/626220
Title:
A fast pointwise strategy for anisotropic wave-mode separation in TI media
Authors:
Liu, Qiancheng; Peter, Daniel ( 0000-0002-3397-5379 ) ; Lu, Yongming
Abstract:
The multi-component wavefield contains both compressional and shear waves. Separating wave-modes has many applications in seismic workflows. Conventionally, anisotropic wave-mode separation is implemented by either directly filtering in the wavenumber domain or nonstationary filtering in the space domain, which are computationally expensive. These methods could be categorized into the pseudo-derivative family and only work well within Finite Difference (FD) methods. In this paper, we establish a relationship between group-velocity direction and polarity direction and propose a method, which could go beyond modeling by FD. In particular, we are interested in performing wave-mode separation in a Spectral Element Method (SEM), which is widely used for seismic wave propagation on various scales. The separation is implemented pointwise, independent of its neighbor points, suitable for running in parallel. Moreover, no correction for amplitude and phase changes caused by the derivative operator is required. We have verified our scheme using numerical examples.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Earth Science and Engineering Program; Extreme Computing Research Center
Citation:
Liu Q, Peter D, Lu Y (2017) A fast pointwise strategy for anisotropic wave-mode separation in TI media. SEG Technical Program Expanded Abstracts 2017. Available: http://dx.doi.org/10.1190/segam2017-17795796.1.
Publisher:
Society of Exploration Geophysicists
Journal:
SEG Technical Program Expanded Abstracts 2017
Issue Date:
17-Aug-2017
DOI:
10.1190/segam2017-17795796.1
Type:
Conference Paper
Sponsors:
The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). Numerical computations used resources of the IT Division and Extreme Computing Research Center (ECRC) at KAUST.
Additional Links:
https://library.seg.org/doi/10.1190/segam2017-17795796.1
Appears in Collections:
Conference Papers; Physical Sciences and Engineering (PSE) Division; Extreme Computing Research Center; Earth Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorLiu, Qianchengen
dc.contributor.authorPeter, Danielen
dc.contributor.authorLu, Yongmingen
dc.date.accessioned2017-11-29T11:13:53Z-
dc.date.available2017-11-29T11:13:53Z-
dc.date.issued2017-08-17en
dc.identifier.citationLiu Q, Peter D, Lu Y (2017) A fast pointwise strategy for anisotropic wave-mode separation in TI media. SEG Technical Program Expanded Abstracts 2017. Available: http://dx.doi.org/10.1190/segam2017-17795796.1.en
dc.identifier.doi10.1190/segam2017-17795796.1en
dc.identifier.urihttp://hdl.handle.net/10754/626220-
dc.description.abstractThe multi-component wavefield contains both compressional and shear waves. Separating wave-modes has many applications in seismic workflows. Conventionally, anisotropic wave-mode separation is implemented by either directly filtering in the wavenumber domain or nonstationary filtering in the space domain, which are computationally expensive. These methods could be categorized into the pseudo-derivative family and only work well within Finite Difference (FD) methods. In this paper, we establish a relationship between group-velocity direction and polarity direction and propose a method, which could go beyond modeling by FD. In particular, we are interested in performing wave-mode separation in a Spectral Element Method (SEM), which is widely used for seismic wave propagation on various scales. The separation is implemented pointwise, independent of its neighbor points, suitable for running in parallel. Moreover, no correction for amplitude and phase changes caused by the derivative operator is required. We have verified our scheme using numerical examples.en
dc.description.sponsorshipThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). Numerical computations used resources of the IT Division and Extreme Computing Research Center (ECRC) at KAUST.en
dc.publisherSociety of Exploration Geophysicistsen
dc.relation.urlhttps://library.seg.org/doi/10.1190/segam2017-17795796.1en
dc.rightsArchived with thanks to SEG Technical Program Expanded Abstracts 2017en
dc.subjectseparationen
dc.subject2Den
dc.subjectanisotropyen
dc.titleA fast pointwise strategy for anisotropic wave-mode separation in TI mediaen
dc.typeConference Paperen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentEarth Science and Engineering Programen
dc.contributor.departmentExtreme Computing Research Centeren
dc.identifier.journalSEG Technical Program Expanded Abstracts 2017en
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionInstitute of Geology and Geophysics, Chinese Academy of Sciencesen
kaust.authorLiu, Qianchengen
kaust.authorPeter, Danielen
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