Seismic ray method: Recent developments

V Červený, L Klimeš, I Pšenčík - Advances in Geophysics, 2007 - Elsevier
The seismic ray method has found broad applications in the numerical calculation of seismic
wavefields in complex 3-D, isotropic and anisotropic, laterally varying layered structures and …

[LIVRE][B] Microseismic monitoring

VIU Grechka, WM Heigl - 2017 - library.seg.org
Microseismic Monitoring : Front matter Page 1 Microseismic Monitoring Vladimir Grechka and
Werner M. Heigl Geophysical References Series No. 22 Serge A. Shapiro, volume editor Lianjie …

Weak-anisotropy moveout approximations for P-waves in homogeneous layers of monoclinic or higher anisotropy symmetries

V Farra, I Pšenčík, P Jílek - Geophysics, 2016 - library.seg.org
We have used so-called weak anisotropy (WA) parameterization as an alternative to the
parameterization of generally anisotropic media by a stiffness tensor. WA parameters consist …

Inversion of P-wave VSP data for local anisotropy: Theory and case study

V Grechka, A Mateeva - Geophysics, 2007 - library.seg.org
We discuss, improve, and apply the slowness-polarization method for estimating local
anisotropy from VSP data. Although the idea of fitting a given anisotropic model to the …

Analytic formula for the group velocity and its derivatives with respect to elastic moduli for a general anisotropic medium

D Wang, CY Bai, XW Li, J Hu - Geophysics, 2023 - library.seg.org
Studying the anisotropy of seismic wave velocity can provide a theoretical basis for
understanding the characteristics of seismic wave propagation in anisotropic media, such as …

Moveout approximations for P-and SV-waves in VTI media

V Farra, I Pšenčík - Geophysics, 2013 - pubs.geoscienceworld.org
We tested alternative expressions for the P-and SV-wave moveout formulas in VTI media
based on the weak-anisotropy (WA) approximation. Our moveout formulas represent …

Estimation of elastic stiffness coefficients of an orthorhombic physical model using group velocity analysis on transmission data

F Mahmoudian, GF Margrave, PF Daley, J Wong… - Geophysics, 2014 - library.seg.org
We acquired 3C ultrasonic transmission seismograms, measured group velocities
associated with the three quasi-body wave types, and determined density-normalized …

Converted‐wave beam migration with sparse sources or receivers

L Casasanta, SH Gray - Geophysical Prospecting, 2015 - earthdoc.org
Gaussian beam depth migration overcomes the single‐wavefront limitation of most
implementations of Kirchhoff migration and provides a cost‐effective alternative to full …

Gaussian beams in inhomogeneous anisotropic layered structures

V Červený, I Pšenčík - Geophysical Journal International, 2010 - academic.oup.com
Gaussian beams, approximate solutions of elastodynamic equation concentrated close to
rays of high-frequency seismic body waves, propagating in inhomogeneous anisotropic …

A fast swee** scheme for calculating P wave first-arrival travel times in transversely isotropic media with an irregular surface

H Lan, J Chen, Z Zhang - Pure and Applied Geophysics, 2014 - Springer
Seismic wave propagation shows anisotropic characteristics in many sedimentary rocks.
Modern seismic exploration in mountainous areas makes it important to calculate P wave …