On the Scaling of the Update Direction for Multi-parameter Full Waveform Inversion: Applications to 2D Acoustic and Elastic Cases
Sign Up to like & getrecommendations! Published in 2017 at "Pure and Applied Geophysics"
DOI: 10.1007/s00024-017-1677-9
Abstract: Full waveform inversion (FWI) is traditionally designed as an iterative non-linear optimization problem. Thus, it is subject to scaling problems due to inappropriate choice of model parametrization. It is well known that the conventional gradient-based… read more here.
Keywords: full waveform; multi parameter; direction; parameter ... See more keywords
A numerical study of multi-parameter full waveform inversion with iterative regularization using multi-frequency vibroseis data
Sign Up to like & getrecommendations! Published in 2019 at "Computational Geosciences"
DOI: 10.1007/s10596-019-09897-6
Abstract: We study the inverse boundary value problem for time-harmonic elastic waves, for the recovery of P - and S -wave speeds from vibroseis data or the Neumann-to-Dirichlet map. Our study is based on our recent… read more here.
Keywords: full waveform; iterative regularization; vibroseis data; study ... See more keywords
Reflection full waveform inversion
Sign Up to like & getrecommendations! Published in 2017 at "Science China Earth Sciences"
DOI: 10.1007/s11430-016-9091-9
Abstract: Because of the combination of optimization algorithms and full wave equations, full-waveform inversion (FWI) has become the frontier of the study of seismic exploration and is gradually becoming one of the essential tools for obtaining… read more here.
Keywords: reflection; full waveform; model; waveform inversion ... See more keywords
Crustal velocity structure of central Gansu Province from regional seismic waveform inversion using firework algorithm
Sign Up to like & getrecommendations! Published in 2017 at "Earthquake Science"
DOI: 10.1007/s11589-017-0184-5
Abstract: The firework algorithm (FWA) is a novel swarm intelligence-based method recently proposed for the optimization of multi-parameter, nonlinear functions. Numerical waveform inversion experiments using a synthetic model show that the FWA performs well in both… read more here.
Keywords: velocity structure; inversion; crustal velocity; waveform ... See more keywords
Q full-waveform inversion based on the viscoacoustic equation
Sign Up to like & getrecommendations! Published in 2019 at "Applied Geophysics"
DOI: 10.1007/s11770-019-0749-2
Abstract: Presently, most full-waveform inversion methods are developed for elastic media and ignore the effect of attenuation. The calculation of the quality factor Q is based on velocity parameter inversion under the assumption of a given… read more here.
Keywords: full waveform; inversion; viscoacoustic equation; equation ... See more keywords
An adaptive meshless parameterization for full waveform inversion
Sign Up to like & getrecommendations! Published in 2017 at "Engineering Analysis With Boundary Elements"
DOI: 10.1016/j.enganabound.2017.07.006
Abstract: Abstract Full waveform inversion is a technique to recover images of the subsurface using data from a seismic survey. Nonlinearity, ill-posedness, presence of noise in data, a large number of parameters, different kinds of parameters,… read more here.
Keywords: full waveform; methodology; inversion; meshless ... See more keywords
Tomographic full waveform inversion using normalized integral wavefield
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Applied Geophysics"
DOI: 10.1016/j.jappgeo.2019.04.007
Abstract: Abstract Thanks to smooth intrinsic nature of normalized integral wavefield (NIW), full waveform inversion (FWI) using NIW has a potential to retrieve the long wavelength model parameters from seismic data even in the absence of… read more here.
Keywords: inversion; waveform inversion; normalized integral; integral wavefield ... See more keywords
Elastic full waveform inversion using plane-wave
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Applied Geophysics"
DOI: 10.1016/j.jappgeo.2019.103826
Abstract: Abstract Elastic full waveform inversion (FWI) is used to invert multicomponent data to obtain more accurate subsurface information; however, this method has a much higher computational cost than the acoustic method. In this study, the… read more here.
Keywords: inversion; plane wave; waveform inversion; full waveform ... See more keywords
An accelerated proximal gradient algorithm for source-independent waveform inversion
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Applied Geophysics"
DOI: 10.1016/j.jappgeo.2020.104030
Abstract: Abstract Full Waveform Inversion (FWI) is a promising method for reconstructing subsurface parameters from the full information content in the seismogram. However, FWI is facing many difficulties in practice. The lack of the source wavelet… read more here.
Keywords: source independent; algorithm; inversion; source ... See more keywords
Robust full-waveform inversion using q-statistics
Sign Up to like & getrecommendations! Published in 2020 at "Physica A: Statistical Mechanics and its Applications"
DOI: 10.1016/j.physa.2020.124473
Abstract: Abstract Imaging of the subsurface is central in seismic exploration and a topic of great economic interest. A promising technique for seismic imaging is a wave-equation-based method called full-waveform inversion (FWI). FWI is a data-fitting… read more here.
Keywords: gaussian distribution; full waveform; waveform inversion;
Combining adaptive dictionary learning with nonlocal similarity for full-waveform inversion
Sign Up to like & getrecommendations! Published in 2021 at "Inverse Problems in Science and Engineering"
DOI: 10.1080/17415977.2021.1974855
Abstract: We study the full-waveform inversion (FWI) problem for the recovery of velocity model/image in acoustic media. FWI is formulated as a typical nonlinear optimization problem, many regularization tec... read more here.
Keywords: full waveform; waveform inversion; combining adaptive; adaptive dictionary ... See more keywords