Research Note: The sensitivity of surface seismic P-wave data in transversely isotropic media to reflector depth

Handle URI:
http://hdl.handle.net/10754/622668
Title:
Research Note: The sensitivity of surface seismic P-wave data in transversely isotropic media to reflector depth
Authors:
Alkhalifah, Tariq Ali ( 0000-0002-9363-9799 )
Abstract:
The leading component of the high-frequency asymptotic description of the wavefield, given by the travel time, is governed by the eikonal equation. In anisotropic media, traveltime measurements from seismic experiments conducted along one surface cannot constrain the long-wavelength attribute of the medium along the orthogonal-to-the-surface direction, as anisotropy introduces an independent parameter controlling wave propagation in the orthogonal direction. Since travel times measured on the Earth's surface in transversely isotropic media with a vertical symmetry axis are mainly insensitive to the absolute value of the anisotropic parameter responsible for relating these observations to depth δ, the travel time was perturbed laterally to investigate the traveltime sensitivity to lateral variations in δ. This formulation can be used to develop inversion strategies for lateral variations in δ in acoustic transversely isotropic media, as the surface-recorded data are sensitive to it even if the model is described by the normal moveout velocity and horizontal velocity, or the anellipticity parameter η. Numerical tests demonstrate the enhanced sensitivity of our data when the model is parameterised with a lateral change in δ.
KAUST Department:
KAUST; Saudi Arabia
Citation:
Alkhalifah T (2016) Research Note: The sensitivity of surface seismic P-wave data in transversely isotropic media to reflector depth. Geophysical Prospecting. Available: http://dx.doi.org/10.1111/1365-2478.12483.
Publisher:
Wiley-Blackwell
Journal:
Geophysical Prospecting
Issue Date:
17-Dec-2016
DOI:
10.1111/1365-2478.12483
Type:
Article
ISSN:
0016-8025
Sponsors:
The author would like to thank KAUST for its support, Vladimir Li for the fruitful discussions, and Alexey Stovas and an anonymous reviewer for their critical suggestions that improved the paper.
Additional Links:
http://onlinelibrary.wiley.com/doi/10.1111/1365-2478.12483/abstract
Appears in Collections:
Articles

Full metadata record

DC FieldValue Language
dc.contributor.authorAlkhalifah, Tariq Alien
dc.date.accessioned2017-01-09T11:52:22Z-
dc.date.available2017-01-09T11:52:22Z-
dc.date.issued2016-12-17en
dc.identifier.citationAlkhalifah T (2016) Research Note: The sensitivity of surface seismic P-wave data in transversely isotropic media to reflector depth. Geophysical Prospecting. Available: http://dx.doi.org/10.1111/1365-2478.12483.en
dc.identifier.issn0016-8025en
dc.identifier.doi10.1111/1365-2478.12483en
dc.identifier.urihttp://hdl.handle.net/10754/622668-
dc.description.abstractThe leading component of the high-frequency asymptotic description of the wavefield, given by the travel time, is governed by the eikonal equation. In anisotropic media, traveltime measurements from seismic experiments conducted along one surface cannot constrain the long-wavelength attribute of the medium along the orthogonal-to-the-surface direction, as anisotropy introduces an independent parameter controlling wave propagation in the orthogonal direction. Since travel times measured on the Earth's surface in transversely isotropic media with a vertical symmetry axis are mainly insensitive to the absolute value of the anisotropic parameter responsible for relating these observations to depth δ, the travel time was perturbed laterally to investigate the traveltime sensitivity to lateral variations in δ. This formulation can be used to develop inversion strategies for lateral variations in δ in acoustic transversely isotropic media, as the surface-recorded data are sensitive to it even if the model is described by the normal moveout velocity and horizontal velocity, or the anellipticity parameter η. Numerical tests demonstrate the enhanced sensitivity of our data when the model is parameterised with a lateral change in δ.en
dc.description.sponsorshipThe author would like to thank KAUST for its support, Vladimir Li for the fruitful discussions, and Alexey Stovas and an anonymous reviewer for their critical suggestions that improved the paper.en
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1111/1365-2478.12483/abstracten
dc.subjectAnisotropyen
dc.subjectInversionen
dc.subjectTravel timeen
dc.titleResearch Note: The sensitivity of surface seismic P-wave data in transversely isotropic media to reflector depthen
dc.typeArticleen
dc.contributor.departmentKAUST; Saudi Arabiaen
dc.identifier.journalGeophysical Prospectingen
kaust.authorAlkhalifah, Tariq Alien
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