Visualization and velocity analysis of a high-speed modulated water jet generated by a hydrodynamic nozzle
Sign Up to like & getrecommendations! Published in 2020 at "Measurement"
DOI: 10.1016/j.measurement.2020.107753
Abstract: Abstract This paper deals with visualization and velocity analysis of a self-excited water jet generated by a designed prototype of hydrodynamic nozzle. The high-speed camera in combination with four high-energy pulsed LED lights and the… read more here.
Keywords: visualization velocity; water; jet; velocity ... See more keywords
Ion velocity analysis of rotating structures in a magnetic linear plasma device
Sign Up to like & getrecommendations! Published in 2018 at "Physics of Plasmas"
DOI: 10.1063/1.5019448
Abstract: The MISTRAL device is designed to produce a linear magnetized plasma column. It has been used a few years ago to study a nonlinear low frequency instability exhibiting an azimuthal number m = 2. By changing the… read more here.
Keywords: plasma; ion velocity; ion; velocity analysis ... See more keywords
Automatic velocity analysis using interpretable multi-mode neural networks
Sign Up to like & getrecommendations! Published in 2023 at "Geophysical Journal International"
DOI: 10.1093/gji/ggad202
Abstract: Seismic velocity analysis is the basis for seismic imaging and understanding complex subsurface geological structures. Although the performance of automatic velocity analysis methods based on CMP data or velocity spectra is encouraging, particularly deep learning… read more here.
Keywords: velocity analysis; cmp; velocity; multi ... See more keywords
High-Resolution Velocity Analysis Method Using the ℓ-1 Norm Regularized Least-Squares Method for Pavement Inspection
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing"
DOI: 10.1109/jstars.2018.2791970
Abstract: We propose a high-resolution velocity analysis method to estimate the electromagnetic wave propagation velocity in subsurface medium. The estimation is achieved by applying the ℓ-1 norm regularized least-squares method to the conventional common-midpoint (CMP) velocity… read more here.
Keywords: pavement inspection; velocity; method; velocity analysis ... See more keywords
Impact of user parameters in inversion velocity analysis
Sign Up to like & getrecommendations! Published in 2020 at "Geophysical Prospecting"
DOI: 10.1111/1365-2478.12935
Abstract: ABSTRACT Migration velocity analysis is a method devoted to the evaluation of both reflectivity and background velocity models, associated with the high and low wavenumber components of the model, respectively. Inversion velocity analysis is one… read more here.
Keywords: velocity; background velocity; velocity analysis; inversion velocity ... See more keywords
Velocity and event‐slope analysis using a model‐based common‐diffraction‐surface stack operator
Sign Up to like & getrecommendations! Published in 2020 at "Geophysical Prospecting"
DOI: 10.1111/1365-2478.12969
Abstract: ABSTRACT Over the last two decades, scientists have introduced many ways to improve normal moveout velocity analysis by optimizing the resolution of the moveout velocity spectrum, a graph that displays a coherence value for every… read more here.
Keywords: model based; analysis; velocity; based common ... See more keywords
Elastic wave-equation migration velocity analysis preconditioned through mode decoupling
Sign Up to like & getrecommendations! Published in 2019 at "GEOPHYSICS"
DOI: 10.1190/geo2018-0181.1
Abstract: Multicomponent seismic data acquisition can reveal more information about geologic structures and rock properties than single component acquisition. Full elastic wave seismic imaging, which uses multicomponent seismic to its full potential, is promising because it… read more here.
Keywords: migration velocity; velocity analysis; velocity; wave ... See more keywords
Joint PP and PS plane-wave wave-equation migration-velocity analysis
Sign Up to like & getrecommendations! Published in 2019 at "GEOPHYSICS"
DOI: 10.1190/geo2018-0521.1
Abstract: Conventional joint PP and PS velocity analysis is based on ray tomography. We develop a joint PP and PS wave-equation migration-velocity-analysis method using plane-wave common-image gathers (CIGs) to produce accurate P- and S-wave velocity models.… read more here.
Keywords: plane wave; migration; velocity analysis; velocity ... See more keywords
Diffraction velocity analysis in a single-channel seismic survey in the Joetsu Basin
Sign Up to like & getrecommendations! Published in 2020 at "Geophysics"
DOI: 10.1190/geo2019-0011.1
Abstract: Historically, marine research has been using single-channel seismic (SCS) devices for scientific projects. Despite SCS’s abundant data availability and the contribution it has brought for subsurface comprehension, few efforts have been dedicated to improve the… read more here.
Keywords: diffraction velocity; velocity; rms velocity; channel seismic ... See more keywords
Tomographic velocity analysis and wave-equation depth migration in an overthrust terrain: A case study from the Tuha Basin, China
Sign Up to like & getrecommendations! Published in 2018 at "Interpretation"
DOI: 10.1190/int-2017-0053.1
Abstract: AbstractAlthough the structures associated with overthrust terrains form important targets in many basins, accurately imaging remains challenging. Steep dips and strong lateral velocity variations associated with these complex structures require prestack depth migration instead of… read more here.
Keywords: velocity; tomographic velocity; migration; velocity analysis ... See more keywords