203 citations · 249 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…
Nearly constant Q dissipative models and wave equations for general viscoelastic anisotropy
Qi Hao, Stewart Greenhalgh
The quality factor (Q) links seismic wave energy dissipation to physical properties of the Earth's interior, such as temperature, stress and composition. Frequency independence of…
Nearly constant Q models of the generalized standard linear solid type and the corresponding wave equations
Qi Hao, Stewart Greenhalgh
Time-domain seismic forward and inverse modeling for a dissipative medium is a vital research topic to investigate the attenuation structure of the Earth. Constant Q, also called f…
Wavefield solutions from machine learned functions
Tariq Alkhalifah, Chao Song, Umair bin Waheed +1
Solving the wave equation is one of the most (if not the most) fundamental problems we face as we try to illuminate the Earth using recorded seismic data. The Helmholtz equation pr…
PINNeik: Eikonal solution using physics-informed neural networks
Umair bin Waheed, Ehsan Haghighat, Tariq Alkhalifah +2
The eikonal equation is utilized across a wide spectrum of science and engineering disciplines. In seismology, it regulates seismic wave traveltimes needed for applications like so…