Show simple item record

dc.contributor.authorKazei, Vladimir
dc.contributor.authorAlkhalifah, Tariq Ali
dc.date.accessioned2018-02-07T07:02:29Z
dc.date.available2018-02-07T07:02:29Z
dc.date.issued2018-01-30
dc.identifier.citationKazei V, Alkhalifah T (2018) Waveform inversion for orthorhombic anisotropy with P-waves: feasibility & resolution. Geophysical Journal International. Available: http://dx.doi.org/10.1093/gji/ggy034.
dc.identifier.issn0956-540X
dc.identifier.issn1365-246X
dc.identifier.doi10.1093/gji/ggy034
dc.identifier.urihttp://hdl.handle.net/10754/627072
dc.description.abstractVarious parameterizations have been suggested to simplify inversions of first arrivals, or P −waves, in orthorhombic anisotropic media, but the number and type of retrievable parameters have not been decisively determined. We show that only six parameters can be retrieved from the dynamic linearized inversion of P −waves. These parameters are different from the six parameters needed to describe the kinematics of P −waves. Reflection-based radiation patterns from the P − P scattered waves are remapped into the spectral domain to allow for our resolution analysis based on the effective angle of illumination concept. Singular value decomposition of the spectral sensitivities from various azimuths, offset coverage scenarios, and data bandwidths allows us to quantify the resolution of different parameterizations, taking into account the signal-to-noise ratio in a given experiment. According to our singular value analysis, when the primary goal of inversion is determining the velocity of the P −waves, gradually adding anisotropy of lower orders (isotropic, vertically transversally isotropic, orthorhombic) in hierarchical parameterization is the best choice. Hierarchical parametrization reduces the tradeoff between the parameters and makes gradual introduction of lower anisotropy orders straightforward. When all the anisotropic parameters affecting P −wave propagation need to be retrieved simultaneously, the classic parameterization of orthorhombic medium with elastic stiffness matrix coefficients and density is a better choice for inversion. We provide estimates of the number and set of parameters that can be retrieved from surface seismic data in different acquisition scenarios. To set up an inversion process, the singular values determine the number of parameters that can be inverted and the resolution matrices from the parameterizations can be used to ascertain the set of parameters that can be resolved.
dc.description.sponsorshipWe thank Alexey Stovas and Daniel Kohn for their constructive and helpful reviews of the manuscript. We are grateful to Ju-Won Oh, Nabil Masmoudi and Ramzi Djebbi of SWAG, KAUST for helpful discussions as well. Vladimir Kazei is also grateful to Oleg Ovcharenko and Veronica Tremblay of KAUST for their suggestions on improving the manuscript readability. Finally, we thank KAUST for support and its HPC resources.
dc.publisherOxford University Press (OUP)
dc.relation.urlhttps://academic.oup.com/gji/advance-article-abstract/doi/10.1093/gji/ggy034/4830112
dc.rightsThis is a pre-copyedited, author-produced PDF of an article accepted for publication in Geophysical Journal International following peer review. The version of record is available online at: https://academic.oup.com/gji/advance-article-abstract/doi/10.1093/gji/ggy034/4830112.
dc.titleWaveform inversion for orthorhombic anisotropy with P-waves: feasibility & resolution
dc.typeArticle
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentSeismic Wave Analysis Group
dc.identifier.journalGeophysical Journal International
dc.eprint.versionPost-print
kaust.personKazei, Vladimir
kaust.personAlkhalifah, Tariq Ali
refterms.dateFOA2018-06-13T16:28:36Z
dc.date.published-online2018-01-30
dc.date.published-print2018-05-01


Files in this item

Thumbnail
Name:
ggy034.pdf
Size:
1.316Mb
Format:
PDF
Description:
Accepted Manuscript

This item appears in the following Collection(s)

Show simple item record