Prediction of river discharges at confluences based on Entropy theory and surface-velocity measurements

F Bahmanpouri, S Barbetta, C Gualtieri… - Journal of …, 2022 - Elsevier
Hydrodynamic features of the confluence zone of large rivers are complicated because of
their three-dimensional flow structure. The confluence between the Rio Negro and the Rio …

Noncontact measurement of river surface velocity and discharge estimation with a low-cost Doppler radar sensor

F Alimenti, S Bonafoni, E Gallo… - … on Geoscience and …, 2020 - ieeexplore.ieee.org
River discharge is an important variable to measure in order to predict droughts and flood
occurrences. Once the cross-sectional geometry of the river is known, discharge can be …

Estimating the average river cross‐section velocity by observing only one surface velocity value and calibrating the entropic parameter

F Bahmanpouri, A Eltner, S Barbetta… - Water Resources …, 2022 - Wiley Online Library
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 …

[HTML][HTML] Estimating velocity distribution and flood discharge at river bridges using entropy theory–insights from computational fluid dynamics flow fields

F Bahmanpouri, T Lazzarin, S Barbetta… - Hydrology and Earth …, 2024 - hess.copernicus.org
Estimating the flow velocity and discharge in rivers is of particular interest for monitoring,
modeling, and research purposes. Instruments for measuring water level and surface …

Exploring the effects of climatic variables on monthly precipitation variation using a continuous wavelet-based multiscale entropy approach

K Roushangar, F Alizadeh, J Adamowski - Environmental research, 2018 - Elsevier
Understanding precipitation on a regional basis is an important component of water
resources planning and management. The present study outlines a methodology based on …

A multiscale time-space approach to analyze and categorize the precipitation fluctuation based on the wavelet transform and information theory concept

K Roushangar, V Nourani, F Alizadeh - Hydrology Research, 2018 - iwaponline.com
The present study proposed a time-space framework using discrete wavelet transform-
based multiscale entropy (DWE) approach to analyze and spatially categorize the …

Application of the Kapur entropy for two-dimensional velocity distribution

G Singh, R Khosa - Stochastic Environmental Research and Risk …, 2023 - Springer
The present study uses the Kapur entropy to derive the two-dimensional velocity distribution
applicable to the entire flow depth for wide and narrow open channel flows. Using the …

Entropic model application to identify cross-sectional flow effect on velocity distribution in a large amplitude meandering channel

D Termini, T Moramarco - Advances in Water Resources, 2020 - Elsevier
Literature shows the application of the entropy concept in open channels flow. No existing
research has been addressed to the application of the entropy concept for evaluating the …

Identifying complexity of annual precipitation variation in Iran during 1960–2010 based on information theory and discrete wavelet transform

K Roushangar, F Alizadeh - Stochastic Environmental Research and Risk …, 2018 - Springer
The hydrologic process and dynamic system of precipitation is influenced by many physical
factors which are excessively complex and variable. Present study used a wavelet transform …

[HTML][HTML] An optimized entropy-based model for estimating river confluence hydrodynamics: Accounting for the effects of velocity dip

S Yuan, H Lin, H Tang, J Qiu, Z Li, D Xu, X Luo… - Journal of …, 2024 - Elsevier
The entropy model has been successfully used to calculate the flow velocity profile of rivers
according to the measured surface-flow velocity. However, it has limitations in the large river …