Összesen 1 találat.
#/oldal:
Részletezés:
Rendezés:

1.

001-es BibID:BIBFORM103812
Első szerző:Bahmanpouri, Farhad
Cím:Estimating the average river cross section velocity by observing only one surface velocity value and calibrating the entropic parameter / Farhad Bahmanpouri, Anette Eltner, Silvia Barbetta, László Bertalan, Tommaso Moramarco
Dátum:2022
ISSN:0043-1397
Megjegyzések:The current research aims to predict the velocity distribution and discharge rates in rivers based on the entropy concept using only one surface velocity measurement. In this direction, first, UAV-based image acquisition technique was applied to collect the surface velocity distribution along two European rivers, the Sajó and the Freiberger Mulde Rivers. Seven cross-sections were chosen for the analysis. At each cross-section, first, the entropic parameter phí(M) was calibrated based on the maximum and mean velocity magnitudes, derived from Acoustic Doppler Current Profilers (ADCP), respectively, showing a trend for all cross-sections with a range of 0.6 < phí(M) < 0.75. Next, the maximum surface velocity provided by the UAV was implemented as a single velocity input. Finally, the bathymetry data, herein collected by UAV, were considered as the input for the entropy approach. In this way, the entropy iterative method allowed estimating the mean flow velocity by identifying the location (dip) of maximum velocities across the river site and inferring the 2D velocity distribution. The results highlighted that the entropy approach can accurately predict the velocity distribution and discharge rates with a percentage error lower than 13%.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
UAV
entropy method
velocity estimation
discharge estimation
river monitoring
Megjelenés:Water Resources Research. - [Epub ahead of print] (2022), p.1-38. -
További szerzők:Eltner, Anette Barbetta, Silvia Bertalan László (1989-) (geográfus) Moramarco, Tommaso
Pályázati támogatás:DAAD-TKA : 307670
Egyéb
TKP2020-NKA-04
Egyéb
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Rekordok letöltése1