Results 41 to 50 of about 1,225 (192)
Stream Discharge Measurement Using a Large-Scale Particle Image Velocimetry (LSPIV) Prototype [PDF]
Transactions of the ASABE, 2006 New technologies have been developed for open-channel discharge measurement due to concerns about costs, accuracy, and safety of traditional methods. One emerging technology is large-scale particle image velocimetry (LSPIV). LSPIV is capable of measuring surface velocity by analyzing recorded images of particles added to the stream surface.
Harpold, A. A. +4 more
openaire +2 more sources
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
, 2022 Ishizawa, Y. B. Applying Large Scale Particle Image Velocimetry (LSPIV) for flow measurement in open channel with open-source platform. 2022. 88p. Dissertação (Mestrado) Escola de Engenharia de São Carlos, Universidade de São Paulo, São Carlos, 2022. The
Yuri Batista Ishizawa
semanticscholar +1 more source
RivQNet: Deep Learning Based River Discharge Estimation Using Close‐Range Water Surface Imagery
Water Resources Research, Volume 59, Issue 2, February 2023., 2023 Abstract Streamflow data is often the most critical input for hydrologic and hydraulic research, modeling, and design studies. Streamflow measurement using close range non‐contact sensing such as image velocimetry is a new technique that is yet far from maturity.
S. Ansari +4 more
wiley +1 more source
Remote determination of the velocity index and mean streamwise velocity profiles [PDF]
, 2017 Author Posting. © American Geophysical Union, 2017. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Water Resources Research 53 (2017): 7521–7535,
Cowen, Edwin, Johnson, Erika D.
core +1 more source
Moving Aircraft River Velocimetry (MARV): Framework and Proof‐of‐Concept on the Tanana River
Water Resources Research, Volume 59, Issue 2, February 2023., 2023 Abstract Information on velocity fields in rivers is critical for designing infrastructure, modeling contaminant transport, and assessing habitat. Although non‐contact approaches to measuring flow velocity are well established, these methods assume a stationary imaging platform.
Carl J. Legleiter +3 more
wiley +1 more source
Fish Passage and Abundance around Grade Control Structures on Incised Streams [PDF]
, 2009 This paper summarizes research from separate studies of fish passage over weirs (Larson et al., 2004; Litvan, 2006; Litvan, et al., 2008a-c) and weir hydraulics (Papanicolaou and Dermisis, 2006; Papanicolaou and Dermisis, in press).
Dermisis, D. C. +6 more
core +3 more sources
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
Large Scale Infrared-Based Remote Sensing of Turbulence Metrics in Surface Waters: Going Beyond Mean Flow [PDF]
, 2021 In recent years field-scale applications of image-based velocimetry methods, often referred to as large scale particle image velocimetry (LSPIV), have been increasingly deployed.
Cowen, Edwin Alfred +1 more
core +2 more sources