Results 101 to 110 of about 166 (142)
From PIV to LSPIV: Harnessing deep learning for environmental flow velocimetry
Journal of HydrologyJames B. Tlhomole +3 more
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Jaugeages LSPIV lors de la crue du 17/10/2024
Ce rapport présente brièvement les résultats de jaugeages vidéo obtenus suite à l’évènement cévenol qui a frappé plusieurs départements (07, 42, 43) le 17/10/2024 avec des intensités de pluie exceptionnelles et des dégâts considérables. Quatre vidéos ont été exploitées et complétées par des mesures de topographie et des post-traitements adaptés.
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Neurovascular coupling and briefCO 2 interrogate distinct vascular regulations
Tournissac M +9 more
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Journal of Hydrology, 2019
Abstract Large-Scale Particle Image Velocimetry (LSPIV) has been successfully applied for stream flow and flood measurements. In most LSPIV studies, the water surface has been approximated as a two-dimensional planar surface. Errors may arise due to this approximation for flows in steep channels and with complex riverbed topography, especially for ...
Qian Liao
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Abstract Large-Scale Particle Image Velocimetry (LSPIV) has been successfully applied for stream flow and flood measurements. In most LSPIV studies, the water surface has been approximated as a two-dimensional planar surface. Errors may arise due to this approximation for flows in steep channels and with complex riverbed topography, especially for ...
Qian Liao
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LSPIV implementation for environmental flow in various laboratory and field cases [PDF]
Journal of Hydro-Environment Research, 2011 Large-Scale Particle Image Velocimetry (LSPIV) is an extension of a quantitative imaging technique to measure water surface velocities using simple and inexpensive equipment. This paper describes the implementation of imaged-based LSPIV in eight different environmental flow and hydraulic engineering applications for the investigation of complex ...
Tetsuya Sumi +2 more
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LSPIV measurements to assess the impact of a bridge on a weakly undulating flow
Journal of Applied Water Engineering and Research, 2023Leticia Tarrab +2 more
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Increasing LSPIV performances by exploiting the seeding distribution index at different spatial scales [PDF]
Journal of Hydrology, 2021 Image-based approaches for surface velocity estimations are becoming increasingly popular because of the increasing need for low-cost river flow monitoring methods. In this context, seeding characteristics and dynamics along the video footage represent one of the key variables influencing image velocimetry results.
Ian Maddock +2 more
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The Use of LSPIV to Measure Large Streamwise Vortices
World Environmental and Water Resource Congress 2006, 2006The impact of large streamwise vortices or macroturbulence upon suspended sediment transport and mobility of aquatic species is well recognized. In order to advance the understanding of large streamwise vortices, it is increasingly important to map the turbulent structures on a large scale domain such as for a total river reach.
J. F. Fox, A. Patrick, S. Wood
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Augmenting LSPIV Surface Current Measurement with Drifting ASVs
2018 OCEANS - MTS/IEEE Kobe Techno-Oceans (OTO), 2018Large Scale Particle Image Velocimetry (LSPIV) has been successfully used in the field to gather water surface flow data, which is critical to understanding complex geomorphic, hydrologic, and ecological river processes. Its success, however, depends on lighting conditions and adequate flow seeding with trackable debris or visual features, that can be ...
Christopher Tomaszewski +2 more
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Verification and Application of Surface-Velocity Measurement Method Using LSPIV [PDF]
Journal of Korea Water Resources Association, 2004 The purpose of this study is to verify LSPIV technique. Verification was made using moving cart with known velocity. The difference of velocity values obtained using these methods are within 5％, which means that LSPIV can be used in the field with ...
Young-Geun Kim +2 more
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