Browsing by Author "Gholami, Ali"
Now showing items 1-4 of 4
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An extended Gauss-Newton method for full-waveform inversion
Gholami, Ali (Society of Exploration Geophysicists, 2024-05)Full-waveform inversion (FWI) is a large-scale nonlinear ill-posed problem for which computationally expensive Newton-type methods can become trapped in undesirable local minima, particularly when the initial model lacks ... -
Full waveform inversion and Lagrange multipliers
Gholami, Ali; Aghazade, Kamal (Oxford University Press on behalf of The Royal Astronomical Society, 2024-04-19)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 model parameters that accurately reproduce the ... -
Robust elastic full-waveform inversion using an alternating direction method of multipliers with reconstructed wavefields
Aghazade, Kamal; Gholami, Ali; Aghamiry, Hossein S.; Siahkoohi, Hamid Reza (Society of Exploration Geophysicists, 2024-05)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 as a least-squares data fitting ... -
Robust estimation of structural orientation parameters and 2D/3D local anisotropic Tikhonov regularization
Gholami, Ali; Gazzola, Silvia (Society of Exploration Geophysicists, 2024-11)Understanding the orientation of geologic structures is crucial for analyzing the complexity of the earths’ subsurface. For instance, information about geologic structure orientation can be incorporated into local anisotropic ...