Results 1 to 10 of about 636,438 (150)
Seismic Waveform Inversion by Stochastic Optimization [PDF]
International Journal of Geophysics, 2011 We explore the use of stochastic optimization methods for seismic waveform inversion. The basic principle of such methods is to randomly draw a batch of realizations of a given misfit function and goes back to the 1950s.
Tristan van Leeuwen +2 more
doaj +2 more sources
A synthetic study of acoustic full waveform inversion to improve seismic modelling of firn [PDF]
Annals of Glaciology, 2022 The density structure of firn has implications for hydrological and climate modelling and for ice shelf stability. The firn structure can be evaluated from depth models of seismic velocity, widely obtained with Herglotz-Wiechert inversion (HWI), an ...
Emma Pearce +7 more
doaj +2 more sources
Seismic Waveform Inversion Using the Finite-Difference Contrast Source Inversion Method [PDF]
Journal of Applied Mathematics, 2014 This paper extends the finite-difference contrast source inversion method to reconstruct the mass density for two-dimensional elastic wave inversion in the framework of the full-waveform inversion.
Bo Han +3 more
doaj +5 more sources
Energies, 2023 Prestack depth-migrated seismic data, having more accurate imaging position and amplitude fidelity than prestack time-migrated seismic data, are supposed to produce a higher quality reservoir prediction result by using depth-domain inversion.
Jinjin Hao +4 more
doaj +1 more source
Enhancement of In-Plane Seismic Full Waveform Inversion with CPU and GPU Parallelization
Applied Sciences, 2022 Full waveform inversion is a widely used technique to estimate the subsurface parameters with the help of seismic measurements on the surface. Due to the amount of data, model size and non-linear iterative procedures, the numerical computation of Full ...
Min Bahadur Basnet +6 more
doaj +1 more source
Applied Sciences, 2023 The elastic full-waveform inversion (EFWI) method efficiently utilizes the amplitude, phase, and travel time information present in multi-component seismic recordings to create detailed parameter models of subsurface structures.
Qiyuan Qi +3 more
doaj +1 more source
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
doaj +1 more source
Optimal transport for seismic full waveform inversion [PDF]
Communications in Mathematical Sciences, 2016 Full waveform inversion is a successful procedure for determining properties of the earth from surface measurements in seismology. This inverse problem is solved by a PDE constrained optimization where unknown coefficients in a computed wavefield are adjusted to minimize the mismatch with the measured data.
Engquist, Bjorn +2 more
openaire +2 more sources
A method of seismic meme inversion and its application
Petroleum Exploration and Development, 2020 Under the condition of thin interbeds with great lateral changes in terrestrial basins, a seismic meme inversion method is established based on the analysis of seismic sedimentology technology. The relationship between seismic waveform and high-frequency
Yanhu CHEN +8 more
doaj +1 more source
Rapid Seismic Waveform Modeling and Inversion With Neural Operators
IEEE Transactions on Geoscience and Remote Sensing, 2023 Seismic waveform modeling is a powerful tool for determining earth structure models and unraveling earthquake rupture processes, but it is usually computationally expensive. We introduce a scheme to vastly accelerate these calculations with a recently developed machine learning paradigm called the neural operator.
Yan Yang +4 more
openaire +4 more sources