We derive an expression for the error introduced by the second-order accurate temporal
finite-difference (FD) operator, as present in the FD, pseudospectral and spectral element …

The finite-difference (FD) wave equation is widely implemented in seismic imaging for oil
exploration. But the numerical dispersion due to discretization of time and space derivatives …

The spatial derivatives in decoupled fractional Laplacian (DFL) viscoacoustic and
viscoelastic wave equations are the mixed-domain Laplacian operators. Using the …

We design post-propagation filters using deep learning for overcoming the numerical
dispersion of finite-difference wave extrapolation. We train the network with a given velocity …

Second-order time integration of the wave equation is numerically efficient with time steps
close to the limit set by the stability criterion. However, dispersion errors over realistic …

Finite difference (FD) is widely used for modeling seismic‐wave propagation in theoretical
and applied seismology. Traditional FD methods with the cross stencil exhibit spatial …

The finite-difference (FD) method is widely used for simulating complex wavefield
propagation because of its high accuracy and efficiency. However, it suffers from numerical …

Time-space domain finite-difference modeling has always had the problem of spatial and
temporal dispersion. High-order finite-difference methods are commonly used to suppress …

The finite-difference (FD) scheme is popular in the field of seismic exploration for numerical
simulation of wave propagation; however, its accuracy and computational efficiency are …

The time-space-domain finite-difference method (FDM) is widely used in forward modeling
of wave equations. Conventional explicit FDMs (EFDMs)(with high order in space and the …