Results 61 to 70 of about 435 (189)
Conservation Letters, Volume 18, Issue 5, September/October 2025.ABSTRACT The loss of species represents critical ecological events with far‐reaching implications for conservation biology. Accurate determinations of population status are therefore essential. Erroneous declarations of extinction or extirpation can lead to legal and policy inertia, the premature termination of recovery efforts, and the ongoing ...
Bruce R. Muir, Jeff Richert
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Effect of Managing Tributary Flows on Flood Risk in Transitional Low‐Gradient River Systems
Journal of Flood Risk Management, Volume 18, Issue 3, September 2025.ABSTRACT Flooding in low‐gradient river systems, particularly, within inland‐to‐coastal transitional settings, poses significant risks to both human and natural systems due to complex flow dynamics and the convergence of riverine, tidal, and storm‐driven flooding regimes.
Mohamed S. Awaad +2 more
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Experimental investigation of discharge coefficient over novel kind of sharp-crested V-notch weir
, 2017 Thin-plate weirs are the simplest and least expensive devices, which frequently have been employed in many water projects. In this research, a unique type of Sharp-Crested V-notch weir, entitled SCVW, has been introduced. The hydraulic characteristics of
Saeid Mehdizadeh +9 more
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Hydrological Processes, Volume 39, Issue 7, July 2025.While the convergence of the flow duration curve indicates similar behaviour as baseflow decreases, Shigual can sustain slightly higher minimum flows during extremely dry periods compared to Anduy. The mean baseflow indices of both catchments are similar, but Anduy faced a sharp baseflow recession, whereas Shigual exhibited a more stable baseflow ...
Nelson Quispe Cuadros +2 more
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, 2022 Weirs are characterized by a stage-discharge relationship which mainly depends on the shape and dimensions of the hydraulic structure. A weir with symmetrical power-law sides is a versatile weir that can produce some known weir types (rectangular ...
Ferro V., Nicosia A., Di Stefano C.
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Discharge Coefficient of Sharp-Crested Trapezoidal Labyrinth Weirs
International Journal of Electronics, Mechanical and Mechatronics Engineering, 2016 Labyrinth weirs provide an effective means to increase the spillway discharge capacity of dams and are often considered for renovation projects required due to an increase in expected flood inflow to the reservoir of an existing dam. Free crest spillways are hydraulically efficient and safe in operation. Since their discharge capacity
BILHAN, Omer, EMIROGLU, M. Emin
openaire +2 more sources
Hydraulic Control of Submarine Glacial Melt in Greenlandic Fjords
Journal of Geophysical Research: Oceans, Volume 130, Issue 7, July 2025.Abstract Ocean‐driven submarine basal melt of the Greenland Ice Sheet remains a major source of uncertainty in climate projections of future sea level rise based on ice sheet modeling. State‐of‐the‐art parameterizations focus on the properties of the ocean water reaching the marine‐terminating glaciers, processes at the ice‐ocean interface and ...
Jonathan Wiskandt +2 more
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Breaching of Homogeneous Dams With Internal Drainage System
Water Resources Research, Volume 61, Issue 7, July 2025.Abstract The present work addresses the influence of internal drainage systems on failure by overtopping of earth dams. It is based on data collected in six homogeneous dam breach laboratory experiments. Different drainage systems were tested: (a) toe drain only and (b) complete internal drainage system—chimney filter, horizontal blanket and toe drain.
Teresa Alvarez +6 more
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The Validation of Rectangular Sharp Crested Weir Flow using ANSYS – FLUENT
Zanco Journal of Pure and Applied SciencesA weir is a structure consisting of an obstruction such as a dam that built across the open channel to change its flow characteristics. In the present study, a total 12 experiments were done in the laboratory of civil engineering department inside an ...
Bruska S. Mamand , Pshtiwan O. Zaid
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Application of Surrogate Modeling in Stochastic Analysis of an Ogee Spillway Structure
International Journal of Mechanical System Dynamics, Volume 5, Issue 2, Page 290-311, June 2025.ABSTRACT This study investigates the hydraulic performance of an Ogee spillway under varying flow rate conditions, gate opening heights, and spillway widths. Numerical simulations using Flow‐3D, incorporating the (k‐ε) turbulence model and Large Eddy Simulation (LES), were employed alongside surrogate models using MATLAB codes and LP‐TAU to predict ...
Kaywan Othman Ahmed +2 more
wiley +1 more source