Results 31 to 40 of about 3,299,598 (299)
Acoustic 2D full waveform inversion to solve gas cloud challenges
Annals of Geophysics, 2015 The existing conventional inversion algorithm does not provide satisfactory results due to the complexity of propagated wavefield though the gas cloud.
Srichand Prajapati, Deva Ghosh
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Evolutionary full-waveform inversion [PDF]
Geophysical Journal International, 2020 SUMMARY We present a new approach to full-waveform inversion (FWI) that enables the assimilation of data sets that expand over time without the need to reinvert all data. This evolutionary inversion rests on a reinterpretation of stochastic Limited-memory Broyden–Fletcher–Goldfarb–Shanno (L-BFGS), which randomly exploits redundancies to ...
Dirk Philip van Herwaarden +3 more
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Simulation scripts and data for full waveform inversion using spyro
, 2021 Python scripts, meshes, and P-wave velocity models that were used to perform the 2D and 3D full waveform inversion (FWI) experiments documented in the paper titled "Full waveform inversion using triangular waveform-adapted ...
Keith J. Roberts
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Interferometric full-waveform inversion [PDF]
Geophysics, 2018 ABSTRACT Velocity errors in the shallow part of the velocity model can lead to erroneous estimates of the full-waveform inversion (FWI) tomogram. If the location and topography of a reflector are known, then such a reflector can be used as a reference reflector to update the underlying velocity model. Reflections corresponding to this
Sinha, Mrinal, Schuster, Gerard T.
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Estimation of 3D vegetation structure from waveform and discrete return airborne laser scanning data [PDF]
, 2012 This study presents and compares new methods to describe the 3D canopy structure with Airborne Laser Scanning (ALS) waveform data as well as ALS point data.
Olofsson, Kenneth, +12 more
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Bayesian full-waveform inversion with realistic priors [PDF]
Geophysics, 2021 ABSTRACT Seismic full-waveform inversion (FWI) uses full seismic records to estimate the subsurface velocity structure. This requires a highly nonlinear and nonunique inverse problem to be solved; therefore, Bayesian methods have been used to quantify uncertainties in the solution.
Xin Zhang, Andrew Curtis
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Chapter 5 Full waveform inversion [PDF]
, 2020 In the geophysics of oil exploration and reservoir studies, the surface seismic method is the most commonly used method to obtain a subsurface model in 2 or 3 dimensions. This method plays an increasingly important role in soil investigations for geotechnical, hydrogeological and site characterization studies regarding seismic hazard issues.
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A Physics-Based Neural-Network Way to Perform Seismic Full Waveform Inversion
IEEE Access, 2020 Seismic full waveform inversion is a common technique that is used in the investigation of subsurface geology. Its classic implementation involves forward modeling of seismic wavefield based on a certain type of wave equation, which reflects the physics ...
Yuxiao Ren +4 more
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Remote Sensing, 2022 For the full waveform inversion, it is necessary to provide an accurate source wavelet for forwarding modeling in the iteration. The source wavelet estimation method based on deconvolution technology can solve this problem to some extent, but we find ...
Xintong Liu +6 more
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Strategies for elastic full waveform inversion
, 2020 The advent of modern supercomputers, in conjunction with larger, more comprehensive datasets, has led to a paradigm shift in seismic imaging. Full waveform inversion is routinely employed as a tool to estimate subsurface properties of the Earth with ...
Matharu, Gian
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