Results 21 to 30 of about 163 (140)
Efficiency in river discharge measurement: combining Chiu’s method with particle image velocimetry techniques [PDF]
RBRHThis study evaluated the efficiency of combining Large-Scale Particle Image Velocimetry (LSPIV) with Chiu’s entropy method to estimate river discharge in the Brazilian semi-arid region.
Rodrigo Mendes Rodrigues +2 more
doaj +1 more source
Assessing different imaging velocimetry techniques to measure shallow runoff velocities during rain events using an urban drainage physical model [PDF]
Hydrology and Earth System Sciences, 2021 Although surface velocities are key in the calibration of physically based urban drainage models, the shallow water depths developed during non-extreme precipitation and the potential risks during flood events limit the availability of this type of data ...
J. Naves +3 more
doaj +1 more source
A Perspective of Surge Dynamics in Natural Debris Flows Through Pulse‐Doppler Radar Observations
Journal of Geophysical Research: Earth Surface, Volume 128, Issue 9, September 2023., 2023 Abstract As a consequence of their natural occurrence and the frequent formation of multiple surges with high sediment loads, debris flows are considered one of the most hazardous gravity‐driven mass movements in mountain regions. Field measurements of surge dynamics are an essential link in the chain of understanding fundamental process dynamics and ...
Tobias Schöffl +5 more
wiley +1 more source
Uncertainties in measuring and estimating water‐budget components: Current state of the science
WIREs Water, Volume 10, Issue 4, July/August 2023., 2023 Water budget data come in a range of spatial and temporal scales and uncertainty levels. In general, point measurements are more certain, and areal estimates which are required for water budgets have higher uncertainty. Data for subsurface storage and fluxes of water have the poorest spatially explicit data availability and highest uncertainty among ...
Sara B. Levin +8 more
wiley +1 more source
SoftwareX, 2022 VISION is open-source software written in MATLAB for video stabilisation using automatic features detection. It can be applied for any use, but it has been developed mainly for image velocimetry applications in rivers.
Alonso Pizarro +2 more
doaj +1 more source
A Method for Analysis of Spatial Uncertainty in Image Based Surface Velocimetry
Frontiers in Water, 2022 The use of image based velocimetry methods for field-scale measurements of river surface flow and river discharge have become increasingly widespread in recent years, as these methods have several advantages over more traditional methods.
Seth A. Schweitzer, Edwin A. Cowen
doaj +1 more source
Use of LSPIV in assessing urban flash flood vulnerability
Natural Hazards, 2017 Fil: Guillen, Nicolas Federico. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto de Estudios Avanzados en Ingenieria y Tecnologia. Universidad Nacional de Cordoba. Facultad de Ciencias Exactas Fisicas y Naturales.
Guillén, Nicolás Federico +3 more
openaire +2 more sources
Journal of Flood Risk Management, 2021 In order to investigate the relationship between water surface velocity and breach hydrograph, a series of dam breach experiments with a generalised landslide dam were conducted in an open channel of 50 m × 4 m × 2 m.
Jie Liu +4 more
doaj +1 more source
River Surface Velocimetry Based on Virtual River Dataset and Modulated-RAFT
IEEE Access, 2023 In recent years, there has been a surge of interest in image-based velocimetry methods for river surface velocity (RSV) estimation due to their efficiency and accuracy, including large-scale particle image velocimetry (LSPIV), space-time image ...
Yixin Wu +5 more
doaj +1 more source
Gaceta Técnica, 2021 Este estudio tiene como objetivo estimar el caudal a partir de la técnica de velocimetría por Imágenes de Partículas a Gran Escala en flujo a superficie libre.
Fredy Sandro Rosas Flores +2 more
doaj +2 more sources