Results 11 to 20 of about 554,578 (55)

Increasing LSPIV performances by exploiting the seeding distribution index at different spatial scales

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.
Ian Maddock, Salvatore Manfreda, Alonso Vicente Pizarro Valdebenito   +2 more
exaly   +2 more sources

Real-Time Measurement of Flash-Flood in a Wadi Area by LSPIV and STIV

Hydrology, 2019
Flash floods in wadi systems discharge large volumes of water to either the sea or the desert areas after high-intensity rainfall events. Recently, wadi flash floods have frequently occurred in arid regions and caused damage to roads, houses, and ...
Tetsuya Sumi, Mahmood M Almamari, Sameh Ahmed Kantoush   +2 more
exaly   +2 more sources

Quantifying and Reducing the Operator Effect in LSPIV Discharge Measurements

Water Resources Research
Operator choices, both in acquiring the video and data and in processing them, can be a prominent source of error in image‐based velocimetry methods applied to river discharge measurements.
Jérôme Le Coz, Guillaume Bodart
exaly   +2 more sources

LSPIV Measurements of Two‐Dimensional Flow Structure in Streams Using Small Unmanned Aerial Systems: 1. Accuracy Assessment Based on Comparison With Stationary Camera Platforms and In‐Stream Velocity Measurements

Water Resources Research, 2018
Measuring two‐dimensional (2‐D) patterns of flow in rivers at high resolution over large areas is challenging using traditional velocity‐measurement methods, which provide data at specific locations or cross sections.
Bruce Rhoads, Quinn Lewis
exaly   +2 more sources

LSPIV Measurements of Two‐Dimensional Flow Structure in Streams Using Small Unmanned Aerial Systems: 2. Hydrodynamic Mapping at River Confluences

Water Resources Research, 2018
Although past field work at stream confluences has relied on velocity information at specific cross sections to examine flow structure, detailed characterizations of spatial and temporal variations in the hydrodynamics of confluences are lacking.
Bruce Rhoads, Quinn Lewis
exaly   +2 more sources

Using a 2D shallow water model to assess Large-Scale Particle Image Velocimetry (LSPIV) and Structure from Motion (SfM) techniques in a street-scale urban drainage physical model

Journal of Hydrology, 2019
Physically-based numerical modelling of surface processes in urban drainage, such as pollutant wash-off or the assessment of flood risks, requires appropriate calibration and terrain elevation data to properly simulate the overland flows and thus to ...
Jeronimo Puertas, Joaquin Suárez-López, Juan Naves   +2 more
exaly   +2 more sources

Application of an Automated Discharge Imaging System and LSPIV during Typhoon Events in Taiwan

Water (Switzerland), 2018
An automated discharge imaging system (ADIS), which is a non-intrusive and safe approach, was developed for measuring river flows during flash flood events.
Chih-Chieh Young, Wei-Che Huang, Wen-Cheng Liu   +2 more
exaly   +2 more sources

Estimación del caudal a partir de la técnica de velocimetría por imágenes de partículas a gran escala aplicado en flujo a superficie libre

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. El trabajo consistió en la grabación de videos en tres campañas, luego estas fueron extraídas
Fredy Sandro Rosas Flores, Shirley Pamela Tejeda Flores, Ferrer Canaza Rojas   +2 more
doaj   +6 more sources

Aplicación de la técnica LSPIV en el diseño hidrológico de infraestructura hídrica

Cuadernos de Ingeniería, 2020
En este trabajo se implementa una nueva técnica de medición decaudales en la provincia de Salta. Los flujos que ocurren durantecrecidas repentinas en ríos de montaña, (como lo son la mayoría delos casos en Salta), presentan algunas características ...
Myriam Cecilia Botelli, Nicolás Federico Guillén, C. García, Antoine Patalano, Marcelo Chalabe   +4 more
semanticscholar   +1 more source

LSPIV analysis of ship-induced wave wash

Experiments in Fluids, 2022
Ship-induced wave wash affects the hydromorphological and ecological state of rivers through various mechanisms. The direct proximity of the riverbank is usually the most exposed, as the hydrodynamic stresses are the highest in these shallow water areas.
Gábor Fleit, S. Baranya
semanticscholar   +1 more source