Simulating propagation of decomposed elastic waves using low-rank approximate mixed-domain integral operators for heterogeneous transversely isotropic media

Handle URI:
http://hdl.handle.net/10754/625187
Title:
Simulating propagation of decomposed elastic waves using low-rank approximate mixed-domain integral operators for heterogeneous transversely isotropic media
Authors:
Cheng, Jiubing; Wu, Zedong; Alkhalifah, Tariq Ali ( 0000-0002-9363-9799 )
Abstract:
In elastic imaging, the extrapolated vector fields are decomposed into pure wave modes, such that the imaging condition produces interpretable images, which characterize reflectivity of different reflection types. Conventionally, wavefield decomposition in anisotropic media is costly as the operators involved is dependent on the velocity, and thus not stationary. In this abstract, we propose an efficient approach to directly extrapolate the decomposed elastic waves using lowrank approximate mixed space/wavenumber domain integral operators for heterogeneous transverse isotropic (TI) media. The low-rank approximation is, thus, applied to the pseudospectral extrapolation and decomposition at the same time. The pseudo-spectral implementation also allows for relatively large time steps in which the low-rank approximation is applied. Synthetic examples show that it can yield dispersionfree extrapolation of the decomposed quasi-P (qP) and quasi- SV (qSV) modes, which can be used for imaging, as well as the total elastic wavefields.
KAUST Department:
King Abdullah University of Science and Technology, , Saudi Arabia
Citation:
Cheng J, Wu Z, Alkhalifah T (2014) Simulating propagation of decomposed elastic waves using low-rank approximate mixed-domain integral operators for heterogeneous transversely isotropic media. SEG Technical Program Expanded Abstracts 2014. Available: http://dx.doi.org/10.1190/segam2014-0911.1.
Publisher:
Society of Exploration Geophysicists
Journal:
SEG Technical Program Expanded Abstracts 2014
Conference/Event name:
SEG Denver 2014 Annual Meeting, SEG 2014
Issue Date:
5-Aug-2014
DOI:
10.1190/segam2014-0911.1
Type:
Conference Paper
Sponsors:
The first author would like to thank Sergey Fomel for sharing his experience in designing low-rank approximate algorithm, and Chenlong Wang and Tengfei Wang for helpful discussion. We thank KAUST for it’s support. We thank the authors of Madagascar for providing this software platform for reproducible computational experiments.
Additional Links:
http://library.seg.org/doi/abs/10.1190/segam2014-0911.1
Appears in Collections:
Conference Papers

Full metadata record

DC FieldValue Language
dc.contributor.authorCheng, Jiubingen
dc.contributor.authorWu, Zedongen
dc.contributor.authorAlkhalifah, Tariq Alien
dc.date.accessioned2017-07-12T07:20:55Z-
dc.date.available2017-07-12T07:20:55Z-
dc.date.issued2014-08-05en
dc.identifier.citationCheng J, Wu Z, Alkhalifah T (2014) Simulating propagation of decomposed elastic waves using low-rank approximate mixed-domain integral operators for heterogeneous transversely isotropic media. SEG Technical Program Expanded Abstracts 2014. Available: http://dx.doi.org/10.1190/segam2014-0911.1.en
dc.identifier.doi10.1190/segam2014-0911.1en
dc.identifier.urihttp://hdl.handle.net/10754/625187-
dc.description.abstractIn elastic imaging, the extrapolated vector fields are decomposed into pure wave modes, such that the imaging condition produces interpretable images, which characterize reflectivity of different reflection types. Conventionally, wavefield decomposition in anisotropic media is costly as the operators involved is dependent on the velocity, and thus not stationary. In this abstract, we propose an efficient approach to directly extrapolate the decomposed elastic waves using lowrank approximate mixed space/wavenumber domain integral operators for heterogeneous transverse isotropic (TI) media. The low-rank approximation is, thus, applied to the pseudospectral extrapolation and decomposition at the same time. The pseudo-spectral implementation also allows for relatively large time steps in which the low-rank approximation is applied. Synthetic examples show that it can yield dispersionfree extrapolation of the decomposed quasi-P (qP) and quasi- SV (qSV) modes, which can be used for imaging, as well as the total elastic wavefields.en
dc.description.sponsorshipThe first author would like to thank Sergey Fomel for sharing his experience in designing low-rank approximate algorithm, and Chenlong Wang and Tengfei Wang for helpful discussion. We thank KAUST for it’s support. We thank the authors of Madagascar for providing this software platform for reproducible computational experiments.en
dc.publisherSociety of Exploration Geophysicistsen
dc.relation.urlhttp://library.seg.org/doi/abs/10.1190/segam2014-0911.1en
dc.rightsArchived with thanks to SEG Technical Program Expanded Abstracts 2014en
dc.subjectanisotropyen
dc.subjectelasticen
dc.subjectmulticomponenten
dc.subjectwave propagationen
dc.subjectdecompositionen
dc.titleSimulating propagation of decomposed elastic waves using low-rank approximate mixed-domain integral operators for heterogeneous transversely isotropic mediaen
dc.typeConference Paperen
dc.contributor.departmentKing Abdullah University of Science and Technology, , Saudi Arabiaen
dc.identifier.journalSEG Technical Program Expanded Abstracts 2014en
dc.conference.date2011-10-26 to 2011-10-31en
dc.conference.nameSEG Denver 2014 Annual Meeting, SEG 2014en
dc.conference.locationDenver, CO, USAen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionTongji University, State Key Laboratory of Marine Geology, , Chinaen
kaust.authorWu, Zedongen
kaust.authorAlkhalifah, Tariq Alien
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