Results 41 to 50 of about 600 (156)

Tracking Floating Wood During a Flood: New Insights From Drone Surveys and Machine Learning

Journal of Geophysical Research: Earth Surface, Volume 130, Issue 11, November 2025.
Abstract Instream large wood (LW) plays a vital role in river morphology and ecology, but its transport can pose risks to infrastructure during floods. Monitoring LW transport during flood events remains limited due to technical and logistical limitations.
J. Aarnink, A. Fornari, F. Rouge, G. Ceriotti, V. Ruiz‐Villanueva   +4 more
wiley   +1 more source

Combined use of LS-PIV and CFD for the characterization of turbulent flow in the contact chamber of ‘COSTA AZUL’ wastewater treatment plant, Carlos Paz

Journal of Hydroinformatics, 2021
The Costa Azul wastewater treatment plant is situated in Carlos Paz city (Córdoba, Argentina). The treated water is discharged to the San Roque reservoir, which is the source of water for the city of Córdoba and surrounding towns.
Ragessi I. Matias, Leyria Rainieri Gianina, Ganancias Facundo, García C. Marcelo, Di Buo Melina, Balangero Bottazzi Gerardo   +5 more
doaj   +1 more source

Image analysis of large-scale recirculating river flow by LSPIV

Journal of the Visualization Society of Japan, 1999
Large scale recirculating flow in a river was measured by a new image analysis method, Large Scale Particle Image Velocimetry (LSPIV), proposed by one of the authors. In this method, oblique-angled video images of river surface flow visualized by special tracer can be analyzed by PIV after the geometric image transformation.
Fujita, Ichiro, Nakashima, Takeharu
openaire   +2 more sources

CCTV‐Hyperspectral Imaging for Suspended Sediment Transport (HISST): Proof‐of‐Concept for a Continuous Day‐and‐Night Monitoring Approach

Water Resources Research, Volume 61, Issue 10, October 2025.
Abstract Effective sediment monitoring is crucial for managing dynamic river environments where suspended sediment transport varies over time. However, manual sampling and turbidity sensor‐based methods provide limited spatial coverage and can be labor‐intensive.
Siyoon Kwon, Hyoseob Noh, Il Won Seo, Yun Ho Lee   +3 more
wiley   +1 more source

Wind Stress Effects on Drone‐Based Thermal Infrared Surface Velocimetry Measurements of Tidal Flow in an Estuary

Water Resources Research, Volume 61, Issue 9, September 2025.
Abstract We evaluate the effect of surface wind stress on remote velocimetry measurements of tidal flow by comparing these measurements to the bulk flow velocity measured by a co‐located acoustic velocity profiler in a tidal channel. The remote velocity measurements are made with a thermal imager mounted on a drone hovering directly over the acoustic ...
Evan T. Heberlein, Marc Mayes, Bryn E. Morgan, Kelly K. Caylor, Seth A. Schweitzer, Edwin A. Cowen   +5 more
wiley   +1 more source

Application de la méthode LSPIV pour la mesure de champs de vitesse et de débits de crue sur modèle réduit et en rivière [PDF]

, 2013
[Departement_IRSTEA]Eaux [TR1_IRSTEA]ARCEAUInternational audienceLSPIV technique enables the measurement of surface flow velocities using image sequence analysis.
Die Moran, A., Dramais, Guillaume, Magali Jodeau, Le Boursicaud, R., Le Coz, Jérôme, Guillaume Dramais, Bertrand Marchand, Raphaël Le Boursicaud, Jodeau, M., Jodeau, Magali, Le Coz, J., Hauet, Alexandre, Marchand, Bertrand, Die Moran, Andrés, Hauet, A., Marchand, B., Jérôme Le Coz, Alexandre Hauet, Andrés die Moran, Le Boursicaud, Raphaël   +19 more
core   +1 more source

Método LSPIV para el cálculo de la velocidad superficial en escurrimientos fluviales [PDF]

, 2020
Este artículo evalúa el método de velocímetria de imágenes de partículas a gran escala (LSPIV). LSPIV es sin duda una técnica no intrusiva muy eficiente a la hora de medir velocidades en superficie libre.
Rosas Flores, Fredy Sandro, Tejeda Flores, Shirley Pamela   +1 more
core   +1 more source

A new method for reconstructing velocity field in weir flow based on binocular stereovision and particle image velocimetry

Shui kexue jinzhan, 2017
We propose a new method for reconstructing complex surface velocity field in weir flow which is notoriously difficult to measure due to its sharp drop and high fluctuation. The new method is able to map the curved flow surface by two coplanar cameras and
CAO Liekai, BAI Ruonan, ZHONG Qiang, LI Danxun, WANG Xingkui   +4 more
doaj   +1 more source

Uncovering fine‐scale surface flow dynamics with particle tracking velocimetry: A new benchmark for soil erosion modelling

Earth Surface Processes and Landforms, Volume 50, Issue 9, Page 1-18, July 2025.
This study introduces a camera‐based approach for distributed, high‐resolution flow velocity measurements during artificial rainfall simulations, using particle tracking velocimetry (PTV). The results demonstrate PTV's potential as a robust and easily implementable tool for improving runoff model assessment and process understanding at small scales ...
Lea Epple, Anne Bienert, Oliver Grothum, Jonas Lenz, Anette Eltner   +4 more
wiley   +1 more source

Peligro de los raudales para los usuarios de la vía pública en ciudades del Paraguay

Revista de la Sociedad Científica del Paraguay, 2018
Los raudales/avenidas en el Paraguay causan a menudo grandes problemas en las calles de las ciudades, no solamente importantes daños materiales, si no también causan decesos humanos, arrastrando vehículos y personas. Esta alarmante situación, nos llevó a
Adriana Ruiz Diaz Cardoso, Alfredo López Fernández, Edith Camaño Schettini   +2 more
doaj   +1 more source