Results 31 to 40 of about 2,936 (205)
Rapid 4D FWI using a local wave solver [PDF]
, 2016 Much of the computational cost involved in full-waveform inversion comes from the solution of the wave equation in a large domain. These computations must be done for the entire domain through which we expect waves to pass for a particular survey ...
Malcolm, Alison, Willemsen, Bram
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83rd EAGE Annual Conference & Exhibition, 2022 In the Valhall field ocean-bottom-cable (OBC) dataset, a wide literature have shown that FWI enriches an traveltime-based initial velocity model with geologically meaningful details, improving the imaging of shallow multi-layered low velocity zones and complex deep structures. The quality of traveltime prediction in the starting model makes it possible
Provenzano, Giuseppe +3 more
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CT&F Ciencia, Tecnología & Futuro, 2022 Full Waveform Inversion (FWI) is an optimization method that retrieves high-quality images of the ground's internal electromagnetic properties, such as permittivity, permeability, or conductivity.
Andrés-Fernando Plata-Galvis +3 more
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Application of Frequency-dependent Traveltime Tomography and Full Waveform Inversion to Realistic Near-surface Seismic Refraction Data [PDF]
, 2016 We present a synthetic test that uses a workflow consisting of a new frequency-dependent traveltime tomography (FDTT) method to provide a starting model for full waveform inversion (FWI) for near-surface seismic velocity estimation from refraction data ...
Chen, Jianxiong, Zelt, Colin A.
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Elastic Full Waveform Inversion (FWI) of Reflection Data with a Phase Misfit Function [PDF]
, 2016 The authors want to thank Repsol for the permission to publish the present research, carried out at the Repsol-BSC Research Center. This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sk lodowska-Curie grant agreement No 644202.
Kormann, Jean +6 more
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Resolving the fine-scale velocity structure of continental hyperextension at the Deep Galicia Margin using full-waveform inversion [PDF]
, 2018 Continental hyperextension during magma-poor rifting at the Deep Galicia Margin is characterised by a complex pattern of faulting, thin continental fault blocks, and the serpentinisation, with local exhumation, of mantle peridotites along the S-reflector,
Bayrakci, G. +9 more
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Wave Equation‐Based Local Traveltime Inversion
Earth and Space Science, 2020 Full waveform inversion (FWI) is a strongly nonlinear optimization problem, which suffers from cycle skipping when the initial velocity model is not good enough or the seismic data lack low frequencies.
Y. Hu, L. G. Han, Y. S. Liu, Z. Y. Jin
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Dual-Parameter Simultaneous Full Waveform Inversion of Ground-Penetrating Radar for Arctic Sea Ice
Remote Sensing, 2023 With global warming, Arctic sea ice, as one of the important factors regulating climate, has put forward new requirements for research. At present, the ground penetrating radar (GPR) is a powerful tool to obtain the structure of Arctic sea ice ...
Ying Liu +3 more
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Acceleration strategies for elastic full waveform inversion workflows in 2D and 3D [PDF]
, 2016 Full waveform inversion (FWI) is one of the most challenging procedures to obtain quantitative information of the subsurface. For elastic inversions, when both compressional and shear velocities have to be inverted, the algorithmic issue becomes also a ...
Cela, José M. +7 more
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Extrapolated full-waveform inversion (EFWI) with synthesized low-frequency data [PDF]
, 2018 The availability of low frequency data is an important factor in the success of full waveform inversion (FWI) in the acoustic regime. The low frequencies help determine the kinematically relevant, low-wavenumber components of the velocity model, which ...
Demanet, Laurent, Li, Yunyue
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