Extending the search space of full-waveform inversion beyond the single-scattering Born approximation: A tutorial review

S Operto, A Gholami, H Aghamiry, G Guo, S Beller… - Geophysics, 2023 - library.seg.org
Full-waveform inversion (FWI) can be made immune to cycle skip** by matching the
recorded data with traveltime errors smaller than one-half period from inaccurate subsurface …

Quantitative photoacoustic tomography using iteratively refined wavefield reconstruction inversion: a simulation study

SM Ranjbaran, HS Aghamiry, A Gholami… - … on Medical Imaging, 2023 - ieeexplore.ieee.org
The ultimate goal of photoacoustic tomography is to accurately map the absorption
coefficient throughout the imaged tissue. Most studies either assume that acoustic properties …

Compound regularization of full-waveform inversion for imaging piecewise media

HS Aghamiry, A Gholami… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
Full-waveform inversion (FWI) is an iterative nonlinear waveform matching procedure, which
seeks to reconstruct unknown model parameters from partial waveform measurements. The …

Extended-space full-waveform inversion in the time domain with the augmented Lagrangian method

A Gholami, HS Aghamiry, S Operto - Geophysics, 2022 - library.seg.org
The search space of full-waveform inversion (FWI) can be extended via a relaxation of the
wave equation to increase the linear regime of the inversion. This wave-equation relaxation …

Time-domain extended-source full-waveform inversion: Algorithm and practical workflow

G Guo, S Operto, A Gholami, HS Aghamiry - Geophysics, 2024 - library.seg.org
Extended-source full-waveform inversion (ES-FWI) first computes wavefields with data-
driven source extensions such that the simulated data in inaccurate velocity models match …

Full waveform inversion and Lagrange multipliers

A Gholami, K Aghazade - Geophysical Journal International, 2024 - academic.oup.com
Full-waveform inversion (FWI) is an effective method for imaging subsurface properties
using sparsely recorded data. It involves solving a wave propagation problem to estimate …

Full waveform inversion by proximal Newton method using adaptive regularization

HS Aghamiry, A Gholami… - Geophysical Journal …, 2021 - academic.oup.com
Regularization is necessary for solving non-linear ill-posed inverse problems arising in
different fields of geosciences. The base of a suitable regularization is the prior expressed …

Localized adaptive waveform inversion: theory and numerical verification

P Yong, R Brossier, L Métivier… - Geophysical Journal …, 2023 - academic.oup.com
Correctly interpreting phase events thanks to data processing techniques based on
correlation or deconvolution has been the focus of numerous studies in the field of high …

[HTML][HTML] Disjoint interval bound constraints using the alternating direction method of multipliers for geologically constrained inversion: Application to gravity data

V Ogarko, J Giraud, R Martin, M Jessell - Geophysics, 2021 - pubs.geoscienceworld.org
To reduce uncertainties in reconstructed images, geologic information must be introduced in
a numerically robust and stable way during the geophysical data inversion procedure. In the …