Inversion of P- and S-wave VSP traveltimes in a homogeneous moderately anisotropic medium

0488262 - GFÚ 2018 RIV BR eng C - Conference Paper (international conference)
Pšenčík, Ivan - Růžek, Bohuslav
Inversion of P- and S-wave VSP traveltimes in a homogeneous moderately anisotropic medium.
Expanded Abstracts of the 15th International Congress of the Brazilian Geophysical Society. Rio de Janeiro: SBGf, 2017. ISSN 2175-4551.
[International Congress of the Brazilian Geophysical Society /15./. Rio de Janeiro (BR), 31.07.2017-03.08.2017]
R&D Projects: GA ČR(CZ) GA16-05237S
Institutional support: RVO:67985530
Keywords : anisotropy * inversion * P- and S-wave * traveltimes
OECD category: Volcanology

Success of traveltime inversion in anisotropic media depends strongly on the selection of the parameterization of the medium and on an efficient forward modelling scheme. We react to these requirements by using the so-called weak-anisotropy (WA) parameters instead of stiffness-tensor elements or elastic parameters in Voigt notation, and by using the forward modelling formulae based on the weak- anisotropy approximation. In the performed tests, we use P- and S-wave traveltimes generated in a synthetic VSP (vertical seismic profiling) experiment to recover complete anisotropy of a homogeneous model. The performed tests represent a preparation step for applications of traveltime inversion in inhomogeneous anisotropic media.
Permanent Link: http://hdl.handle.net/11104/0282862