Results 41 to 50 of about 3,297,474 (208)

Deep Network Reparameterized Full‐Waveform Inversion From Sequential to Simultaneous Sources With Adjoint‐State Method

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Full‐waveform inversion (FWI) relies on sequential‐source (SQ) workflows for high imaging precision, while simultaneous‐source (SML) encoding drastically accelerates computation but introduces irreversible wavenumber discontinuity artifacts in hybrid‐domain implementations.
Jinwei Fang, Jie Chen, Lutz Gross, Qingchen Zhang, Ning Wang   +4 more
wiley   +1 more source

Full Waveform Inversion (FWI) in 3D Synthetic Geological Modelling

Indonesian Journal on Geoscience
Modeling the Earth's subsurface is important in geophysics, for example, tomography and Full Waveform Inversion (FWI). Especially for FWI, it is a method in the geophysical field that is used to describe the subsurface with a high-resolution image by utilizing all parts of observation data (seismic traces) based on a velocity model.
Indriati Retno Palupi, Wiji Raharjo, Oktavia Dewi Alfiani   +2 more
openaire   +1 more source

Time‐Reversal Full Wavefield Inversion: From Waveform Misfit to Wavefield Focus

Geophysical Prospecting, Volume 74, Issue 7, September 2026.
ABSTRACT We introduce time‐reversal full wavefield inversion (TRFWI), a velocity‐model‐building method that replaces waveform‐misfit minimization with a physically motivated wavefield‐focusing criterion. The recorded data are reversed in time and backpropagated through a trial velocity model; the inversion objective is the degree to which the wavefield
Evgeny Landa, Sergey Fomel
wiley   +1 more source

Optimal Experimental Design in Full Waveform Inversion

, 2023
International audienceMain objectives To propose a new criterion for the optimal positioning of sources and receivers in the context of Full Waveform Inversion.
Métivier, Ludovic, Oudet, Edouard, Abdellaziz, Mohamed Amine, Brossier, Romain   +3 more
core   +1 more source

How Does Neural Network Reparametrization Improve Geophysical Inversion?

Journal of Geophysical Research: Machine Learning and Computation
Full waveform inversion (FWI) is a high‐resolution seismic inversion technique and great efforts have been made to mitigate the multi‐solution problem, such as the traditional total variation (TV) regularization. Different from traditional regularization,
Yuping Wu, Jianwei Ma
doaj   +1 more source

An Eikonal‐Based Angle‐Domain Least‐Squares Kirchhoff Depth Migration in General Anisotropic Media

Geophysical Prospecting, Volume 74, Issue 7, September 2026.
ABSTRACT Least‐squares migration (LSM) is an inversion‐based imaging method that seeks a reflectivity model whose predicted data best fit the recorded seismic data in a least‐squares sense. However, conventional LSM can be unreliable for anisotropic reflection data if reflection angles are neglected.
Paulo H. B. Alves, Wei Zhang, Mauricio D. Sacchi, Marco Cetale   +3 more
wiley   +1 more source

Feasibility study of full waveform inversion of Love-SH waves for detecting small-scale shallow anomalies

AIP Advances
In engineering surveys, conventional SH-wave seismic exploration methods exhibit limited resolution for detecting small-scale shallow anomalies, often failing to meet practical requirements.
Xu Sun, Wei Xu, Yingju Xiong, Yong Li, Xiaoqing Song   +4 more
doaj   +1 more source

Vertical Seismic-Profile Data Local Full-Waveform Inversion Based on Marchenko Redatuming

Applied Sciences, 2023
Local full-waveform inversion (FWI) methods use redatumed seismic responses of virtual receivers within the subsurface to build the local objective function based on the convolution-type representation theorem.
Kai Li, Xuri Huang, Yezheng Hu, Xiaochun Chen, Kai Chen, Jing Tang   +5 more
doaj   +1 more source

Imaging Near‐Surface Bedrock Fracturing and Fluid Pathways Using Seismic Attenuation and Velocity From Viscoacoustic Full‐Waveform Inversion of Refraction Data

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Seismic attenuation provides sensitivity to fracture density, fluid saturation, and pore geometry that complements velocity, enabling quantitative imaging of fracture architecture and associated fluid‐pathways in near‐surface bedrock. Yet high‐resolution attenuation models remain rare in refraction studies due to amplitude‐fidelity and ...
Donggeon Kim, Guangchi Xing, Tieyuan Zhu
wiley   +1 more source

Three-dimensional anisotropic full-waveform inversion [PDF]

, 2016
Full-waveform inversion (FWI) is a powerful nonlinear tool for quantitative estimation of high-resolution high-fidelity models of subsurface seismic parameters, typically P-wave velocity.
Debens, Henry Alexander
core   +1 more source