Rayleigh wave dispersion spectrum inversion across scales
Traditional approaches of using dispersion curves for S-wave velocity reconstruction have
limitations, principally, the 1D-layered model assumption and the automatic/manual picking …
limitations, principally, the 1D-layered model assumption and the automatic/manual picking …
Regularized elastic full-waveform inversion using deep learning
Z Zhang, T Alkhalifah - Advances in subsurface data analytics, 2022 - Elsevier
Elastic full-waveform inversion, which aims to match the waveforms of prestack seismic data,
potentially provides more accurate high-resolution reservoir characterization from seismic …
potentially provides more accurate high-resolution reservoir characterization from seismic …
Deep-learning assisted regularized elastic full waveform inversion using the velocity distribution information from wells
Elastic full waveform inversion (EFWI) can, theoretically, give high-resolution estimates of
the subsurface. However, in practice, the resolution and illumination of EFWI are limited by …
the subsurface. However, in practice, the resolution and illumination of EFWI are limited by …
A self‐supervised learning framework for seismic low‐frequency extrapolation
Full waveform inversion (FWI) is capable of generating high‐resolution subsurface
parameter models, but it is susceptible to cycle‐skipping when the data lack low‐frequency …
parameter models, but it is susceptible to cycle‐skipping when the data lack low‐frequency …
Understanding the Adjoint Method in Seismology: Theory and Implementation in the Time Domain
R Abreu - Surveys in Geophysics, 2024 - Springer
The adjoint method is a popular method used for seismic (full-waveform) inversion today.
The method is considered to give more realistic and detailed images of the interior of the …
The method is considered to give more realistic and detailed images of the interior of the …
An improved elastic wavefield separation method based on the Helmholtz decomposition
Q Zheng, G Yao - Geophysics, 2023 - library.seg.org
Elastic wave-mode separation plays an important role in elastic reverse time migration and
elastic full-waveform inversion. It helps to remove crosstalk artifacts and improve imaging …
elastic full-waveform inversion. It helps to remove crosstalk artifacts and improve imaging …
Data-driven fast prestack structurally constrained inversion
Y Yang, X Xia, X Yin, K Li, J Wang, H Liu - Geophysics, 2022 - library.seg.org
Classic multitrace inversion, such as structurally constrained inversion (SCI), tends to
arrange seismic data trace by trace to introduce constraints that are more in line with the …
arrange seismic data trace by trace to introduce constraints that are more in line with the …
Joint estimation of S-wave velocity and damping ratio of the near-surface from active Rayleigh wave surveys processed with a wavefield decomposition approach
The use of surface wave measurements to derive an S-wave velocity profile of the
subsurface has become a widely applied procedure; however, their potential use to …
subsurface has become a widely applied procedure; however, their potential use to …
Robust elastic full-waveform inversion using an alternating direction method of multipliers with reconstructed wavefields
Elastic full-waveform inversion (EFWI) is a process used to estimate subsurface properties
by fitting seismic data while satisfying wave propagation physics. The problem is formulated …
by fitting seismic data while satisfying wave propagation physics. The problem is formulated …
[HTML][HTML] Elastic direct envelope inversion based on wave mode decomposition for multi-parameter reconstruction of strong-scattering media
The parameter reconstruction of strong-scattering media is a challenge for conventional full
waveform inversion (FWI). Direct envelope inversion (DEI) is an effective method for large …
waveform inversion (FWI). Direct envelope inversion (DEI) is an effective method for large …