Estimation of parameters and thickness of a horizontal layer of arbitrary anisotropy from P-wave moveout

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F21%3A00547522" target="_blank" >RIV/67985530:_____/21:00547522 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/21:10438478
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0926985121002214" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0926985121002214</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jappgeo.2021.104473" target="_blank" >10.1016/j.jappgeo.2021.104473</a>

Result language
angličtina
Original language name
Estimation of parameters and thickness of a horizontal layer of arbitrary anisotropy from P-wave moveout
Original language description
We present an inversion scheme to estimate anisotropy parameters and thickness of a homogeneous layer of arbitrary anisotropy from traveltimes of a reflected P wave. The scheme is based on the weak-anisotropy approximation of P-wave moveout formula. For the description of anisotropy, we use the so-called A-parameters, which represent an alternative to standard elastic moduli specifying anisotropic media, and allow specification of anisotropy of any symmetry, orientation and strength. The proposed scheme allows estimation of, at most, nine of fifteen A-parameters, which describe P-wave propagation in the weak-anisotropy approximation. Therefore, generally, the reconstruction of the P-wave phase-velocity surface from the estimated parameters is impossible. If we deal, however, with higher-symmetry anisotropy (transversely isotropic, orthorhombic) and if information about the orientation of its symmetry elements is available, reconstruction of the phase-velocity surface is possible. Synthetic tests indicate that the inversion scheme works well even in situations, in which the use of other commonly used moveout formulae leads to unsatisfactory results.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10507 - Volcanology

Project
<a href="/en/project/GA20-06887S" target="_blank" >GA20-06887S: Seismic waves in heterogeneous anisotropic viscoelastic media</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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