Measuring Discharge in a Shallow River in an Arid Area solely using an Unmanned Aerial Vehicle
Journal Title: Journal of Drought and Climate change Research (JDCR) - Year 2024, Vol 2, Issue 6
Abstract
Unmanned Aerial Vehicles (UAVs) have recently been applied for river flow measurement. In this paper UAV images were first used to acquire surface velocity fields of a small river in an arid area in Iran based on the principles of Large Scale Particle Image Velocimetry (LSPIV). Subsequently, Large Eddy PIV method was applied on the instantaneous velocity data to obtain turbulent kinetic energy dissipation rates along a selected cross section of the experimented river. In addition, a UAV image was captured and processed to gain the bed material grain size distribution and consequently the Manning roughness coefficient. The resulted gradation curve matched the graph given by sieve analysis with an accuracy of nearly 7.8 percent. Moreover, an equation combining the acquired surface velocity, dissipation rates and Manning coefficient was used to estimate the river bathymetry. Although, the evaluated bathymetry does not fit the surveyed cross section very well, the average predicted depth matches the measured mean depth with a high precision. Finally, the river flow rate calculated using the information solely resulted from UAV images fitted the measured discharge with an accuracy of 5 percent proving the described framework to be a very effective method for primary river flow evaluation especially when supplementary depth measurement is not feasible.
Authors and Affiliations
Farhad Akbarpour; Mohammad Adel Khorasani Nejad; Shervin Shahriairi; Mostafa Rahmanshahi
Keywords
Related Articles
- EP ID EP754914
- DOI https://doi.org/10.22077/jdcr.2024.7376.1061
- Views 28
- Downloads 0
Isolation of Salinity and Drought-Tolerant Bacteria from the Rhizosphere of Plants Province Area Using Remote Sensing Technique
Environmental stresses such as soil salinity and drought as well as poor soil fertility play an important role in reducing agricultural production. The aim of this study was to evaluate the tolerance of bacteria isolated...
Estimation of the spatial distribution of the groundwater quality using the combined method of Geostatistic_ Artificial neural network (Case study: the aquifer in the Miandoab plain)
Drought crisis, although traditionally limited to central provinces, desert, and hot and dry places, but recent research has shown that in recent years, the plains of the Lake Urmia, such as the Miandoab plain, have been...
Evaluation of Drought in Gandaki River Basin of Nepal
Drought is often considered a silent disaster, leading to food and water shortages, displacement, and even conflict. Although evidence of ongoing climate change has been observed, limited research is carried out on droug...
Application of Copula Functions in Meteorological Drought Analysis in Qaen Area
Drought is one of the most damaging natural events, significantly impacting water resource planning due to its geographical dominance and prolonged duration. This study analyzed drought intensity and duration at Qaen met...
Optimizing water use for wheat production under drought conditions
In order to compare new wheat cultivars and lines, an experiment was implemented in the form of split plots (randomized complete blocks) with three replications for two years at the Chahartakhte research station, Shahrek...