142 citations · 188 across the 6 of their papers we have counts for
6 papers
Thomsen-type parameters and attenuation coefficients for constant-Q transverse isotropy
Qi Hao, Ilya Tsvankin
Transversely isotropic (TI) media with the frequency-independent quality-factor elements (also called ``constant-'' transverse isotropy) are often used to describe attenuation a…
Dispersion relation and wave equation for attenuative elliptically anisotropic media
Qi Hao, Ilya Tsvankin
The P-wave slowness and group-velocity surfaces in elliptically anisotropic media are ellipsoids. Elliptical anisotropy is convenient to use as the reference medium in perturbation…
Enhanced prediction accuracy with uncertainty quantification in monitoring CO2 sequestration using convolutional neural networks
Yanhua Liu, Xitong Zhang, Ilya Tsvankin +1
Monitoring changes inside a reservoir in real time is crucial for the success of CO2 injection and long-term storage. Machine learning (ML) is well-suited for real-time CO2 monitor…
NMO-velocity surfaces and Dix-type formulae in anisotropic heterogeneous media
Vladimir Grechka, Ilya Tsvankin
Reflection moveout of pure modes recorded on conventional-length spreads is described by a normal-moveout (NMO) velocity that depends on the orientation of the common-midpoint (CMP…
Inversion of walkaway VSP data in the presence of lateral velocity heterogeneity
Vladimir Grechka, Ilya Tsvankin, Pedro Contreras
Multi-azimuth walkaway vertical seismic profiling (VSP) is an established technique for the estimation of in situ slowness surfaces and inferring anisotropy parameters. Normally, t…
Generalized Dix equation and analytic treatment of normal-moveout velocity for anisotropic media
Vladimir Grechka, Ilya Tsvankin, Jack K. Cohen
Despite the complexity of wave propagation in anisotropic media, reflection moveout on conventional common-midpoint (CMP) spreads is usually well described by the normal-moveout (N…