CGRG Bibliography of Canadian Geomorphology
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Author : Afzalimehr, H.; and Anctil, F.
Date : 2000.
Title : Accelerating shear velocity in gravel-bed channels
Publication : Hydrological Sciences Journal
Issue : 45(1):
Page(s) : 113-124.
Abstract
The behaviour of the shear velocity along a gravel-bed channel is investigated experimentally in the presence of a negative pressure gradient (accelerating flow). Different methods of estimation of the sheer velocity, derived from vertical profiles of the mean longitudinal point velocity, are examined and a new method is proposed. Results show that the proposed method of estimation is comparable to the St Venant and Clauser's methods. At a specific cross section, for constant bottom slope and relative roughness, shear velocity increases with discharge.
Bibliography of Canadian Geomorphology