Efficient wavefield separation by reformulation of two-way wave-equation depth-extrapolation scheme

J You, N Pan, W Liu, J Cao - Geophysics, 2022‏ - pubs.geoscienceworld.org
In two-way wave-equation depth migration by either time extrapolation or depth
extrapolation, an efficient wavefield separation scheme (to separate two-way wavefields into …

Acoustic wave propagation and scattering in visco-acoustic medium: Integral equation representation and De Wolf approximation

H Sun, J Sun - Journal of Applied Geophysics, 2024‏ - Elsevier
A visco-acoustic medium is an approximate representation of the absorption and attenuation
characteristics of the actual earth medium, which will cause energy attenuation and velocity …

Staining algorithm for seismic modeling and migration

B Chen, X Jia - Geophysics, 2014‏ - pubs.geoscienceworld.org
In seismic migration, some structures such as those in subsalt shadow zones are not imaged
well. The signal in these areas may be even weaker than the artifacts elsewhere. We …

Application of unsplit convolutional perfectly matched layer for scalar arbitrarily wide-angle wave equation

H Chen, H Zhou, Y Li - Geophysics, 2014‏ - library.seg.org
ABSTRACT A classical split perfectly matched layer (PML) method has recently been
applied to the scalar arbitrarily wide-angle wave equation (AWWE) in terms of displacement …

Early Cenozoic partial melting of meta-sedimentary rocks of the eastern Gangdese arc, southern Tibet, and its contribution to syn-collisional magmatism

YY Jiang, ZM Zhang, RM Palin, HX Ding… - GSA …, 2022‏ - pubs.geoscienceworld.org
Continental magmatic arcs are characterized by the accretion of voluminous mantle-derived
magmatic rocks and the growth of juvenile crust. However, significant volumes of meta …

Enhancing one-way wave equation-based migration with deep learning

Y Yu, Y Li, X Wu, X Jia - Geophysics, 2023‏ - library.seg.org
One advantage of one-way wave equation-based migration is its low computational cost.
However, due to the limited wavefield propagation angle, it is difficult to use one-way wave …

Two-way wave equation-based depth migration using one-way propagators on a bilayer sensor seismic acquisition system

J You, RS Wu, X Liu, P Zhang, W Han, G Zhang - Geophysics, 2018‏ - library.seg.org
Conventional migration uses the seismic data set recorded at a given depth as one initial
condition from which to implement wavefield extrapolation in the depth domain. In using only …

Application of perfectly matched layer for scalar arbitrarily wide-angle wave equations

H Chen, H Zhou, H Lin, S Wang - Geophysics, 2013‏ - library.seg.org
Arbitrarily wide-angle wave equation (AWWE) is a space domain, high-order one-way wave
equation (OWWE). Its accuracy can be arbitrarily increased, and it is amenable to easy …

An optimised one-way wave migration method for complex media with arbitrarily varying velocity based on eigen-decomposition

A Li, X Liu - Journal of Geophysics and Engineering, 2021‏ - academic.oup.com
The classical one-way generalised screen propagator (GSP) and Fourier finite-difference
(FFD) schemes have limitations in imaging large angles in complex media with substantial …

Numerical modeling of seismic waves using frequency-adaptive meshes

J Hu, X Jia - Journal of Applied Geophysics, 2016‏ - Elsevier
An improved modeling algorithm using frequency-adaptive meshes is applied to meet the
computational requirements of all seismic frequency components. It automatically adopts …