Results 41 to 50 of about 40,315 (288)
Double-difference waveform inversion of 4D ocean bottom cable data: Application to Valhall, North Sea [PDF]
, 2013 Changes in reservoir properties resulting from extracting hydrocarbons and injecting fluid are critical to optimize production. These properties can be characterized using waveform inversions of time-lapse seismic data.
Fehler, Mike +4 more
core +2 more sources
Extrapolated full-waveform inversion: An image-space approach [PDF]
, 2018 The primary factor that prevents full waveform inversion from universal success is the band-limited nature of seismic data, resulting in a gap between the low wavenumber background velocity model and the high wavenumber seismic images.
Demanet, Laurent, Li, Yunyue
core +1 more source
Randomized Source Sketching for Full Waveform Inversion [PDF]
IEEE Transactions on Geoscience and Remote Sensing, 2022 Partial differential equation (PDE) constrained optimization problems such as seismic full waveform inversion (FWI) frequently arise in the geoscience and related fields. For such problems, many observations are usually gathered by multiple sources, which form the right-hand-sides of the PDE constraint.
Kamal Aghazade +3 more
openaire +3 more sources
Optimal Inversion Method Based on Joint Waveform Inversion and Least Squares Reverse Time Migration [PDF]
LithosphereJoint Waveform inversion (JWI) uses the results of reflection waveform inversion (RWI) as the initial model for full waveform inversion (FWI). Compared with the FWI, the JWI method can obtain more information about the structure of the subsurface medium.
Kai Zhang +4 more
doaj +1 more source
Full Waveform Inversion for Time-Distance Helioseismology
, 2014 Inferring interior properties of the Sun from photospheric measurements of the seismic wavefield constitutes the helioseismic inverse problem. Deviations in seismic measurements (such as wave travel times) from their fiducial values estimated for a given
Hanasoge, Shravan, Tromp, Jeroen
core +1 more source
Case studies of ultrasonic full waveform inversion for inspecting concrete structures
e-Journal of Nondestructive TestingThe non-destructive evaluation of reinforced pre-stressed concrete structures is critical to prevent catastrophic failures of aging infrastructure. Conventional non-destructive inspection methods often rely on manual and subjective interpretation of the
David Sollberger +5 more
doaj +1 more source
Optimal Transport for Seismic Full Waveform Inversion
, 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 ...
Engquist, Bjorn +2 more
core +1 more source
Toward an automatic full-wave inversion: Synthetic study cases [PDF]
, 2016 Full-waveform inversion (FWI) in seismic scenarios continues to be a complex procedure for subsurface imaging that might require extensive human interaction in terms of model setup, constraints, and data preconditioning.
Cela, Jose M. +7 more
core +2 more sources
3D variable-grid full-waveform inversion on GPU
Petroleum Science, 2019 Full-waveform inversion (FWI) is a powerful tool to reconstruct subsurface geophysical parameters with high resolution. As 3D surveys become widely implemented, corresponding 3D processing techniques are required to solve complex geological cases, while ...
Zi-Ying Wang +5 more
doaj +1 more source
Full-waveform inversion in three-dimensional PML-truncated elastic media
, 2015 We are concerned with high-fidelity subsurface imaging of the soil, which commonly arises in geotechnical site characterization and geophysical explorations.
Fathi, Arash +2 more
core +1 more source