Analysis of the traveltime sensitivity kernels for an acoustic transversely isotropic medium with a vertical axis of symmetry

Handle URI:
http://hdl.handle.net/10754/621377
Title:
Analysis of the traveltime sensitivity kernels for an acoustic transversely isotropic medium with a vertical axis of symmetry
Authors:
Djebbi, Ramzi ( 0000-0003-0415-0092 ) ; Plessix, René-Édouard; Alkhalifah, Tariq Ali ( 0000-0002-9363-9799 )
Abstract:
In anisotropic media, several parameters govern the propagation of the compressional waves. To correctly invert surface recorded seismic data in anisotropic media, a multi-parameter inversion is required. However, a tradeoff between parameters exists because several models can explain the same dataset. To understand these tradeoffs, diffraction/reflection and transmission-type sensitivity-kernels analyses are carried out. Such analyses can help us to choose the appropriate parameterization for inversion. In tomography, the sensitivity kernels represent the effect of a parameter along the wave path between a source and a receiver. At a given illumination angle, similarities between sensitivity kernels highlight the tradeoff between the parameters. To discuss the parameterization choice in the context of finite-frequency tomography, we compute the sensitivity kernels of the instantaneous traveltimes derived from the seismic data traces. We consider the transmission case with no encounter of an interface between a source and a receiver; with surface seismic data, this corresponds to a diving wave path. We also consider the diffraction/reflection case when the wave path is formed by two parts: one from the source to a sub-surface point and the other from the sub-surface point to the receiver. We illustrate the different parameter sensitivities for an acoustic transversely isotropic medium with a vertical axis of symmetry. The sensitivity kernels depend on the parameterization choice. By comparing different parameterizations, we explain why the parameterization with the normal moveout velocity, the anellipitic parameter η, and the δ parameter is attractive when we invert diving and reflected events recorded in an active surface seismic experiment. © 2016 European Association of Geoscientists & Engineers.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Earth Science and Engineering Program
Citation:
Djebbi R, Plessix R-É, Alkhalifah T (2016) Analysis of the traveltime sensitivity kernels for an acoustic transversely isotropic medium with a vertical axis of symmetry. Geophysical Prospecting: n/a–n/a. Available: http://dx.doi.org/10.1111/1365-2478.12361.
Publisher:
Wiley-Blackwell
Journal:
Geophysical Prospecting
Issue Date:
5-Feb-2016
DOI:
10.1111/1365-2478.12361
Type:
Article
ISSN:
0016-8025
Additional Links:
http://onlinelibrary.wiley.com/doi/10.1111/1365-2478.12361/full
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Earth Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorDjebbi, Ramzien
dc.contributor.authorPlessix, René-Édouarden
dc.contributor.authorAlkhalifah, Tariq Alien
dc.date.accessioned2016-11-03T08:27:52Z-
dc.date.available2016-11-03T08:27:52Z-
dc.date.issued2016-02-05en
dc.identifier.citationDjebbi R, Plessix R-É, Alkhalifah T (2016) Analysis of the traveltime sensitivity kernels for an acoustic transversely isotropic medium with a vertical axis of symmetry. Geophysical Prospecting: n/a–n/a. Available: http://dx.doi.org/10.1111/1365-2478.12361.en
dc.identifier.issn0016-8025en
dc.identifier.doi10.1111/1365-2478.12361en
dc.identifier.urihttp://hdl.handle.net/10754/621377-
dc.description.abstractIn anisotropic media, several parameters govern the propagation of the compressional waves. To correctly invert surface recorded seismic data in anisotropic media, a multi-parameter inversion is required. However, a tradeoff between parameters exists because several models can explain the same dataset. To understand these tradeoffs, diffraction/reflection and transmission-type sensitivity-kernels analyses are carried out. Such analyses can help us to choose the appropriate parameterization for inversion. In tomography, the sensitivity kernels represent the effect of a parameter along the wave path between a source and a receiver. At a given illumination angle, similarities between sensitivity kernels highlight the tradeoff between the parameters. To discuss the parameterization choice in the context of finite-frequency tomography, we compute the sensitivity kernels of the instantaneous traveltimes derived from the seismic data traces. We consider the transmission case with no encounter of an interface between a source and a receiver; with surface seismic data, this corresponds to a diving wave path. We also consider the diffraction/reflection case when the wave path is formed by two parts: one from the source to a sub-surface point and the other from the sub-surface point to the receiver. We illustrate the different parameter sensitivities for an acoustic transversely isotropic medium with a vertical axis of symmetry. The sensitivity kernels depend on the parameterization choice. By comparing different parameterizations, we explain why the parameterization with the normal moveout velocity, the anellipitic parameter η, and the δ parameter is attractive when we invert diving and reflected events recorded in an active surface seismic experiment. © 2016 European Association of Geoscientists & Engineers.en
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1111/1365-2478.12361/fullen
dc.titleAnalysis of the traveltime sensitivity kernels for an acoustic transversely isotropic medium with a vertical axis of symmetryen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentEarth Science and Engineering Programen
dc.identifier.journalGeophysical Prospectingen
dc.contributor.institutionShell Global Solutions Internationalen
kaust.authorDjebbi, Ramzien
kaust.authorAlkhalifah, Tariq Alien
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