Mots-clés
Aménagement hydraulique ; Capacité de charge ; Ecoulement fluvial ; Expérimentation ; Fluviatile ; Granulométrie ; Gravier ; Lit fluvial ; Modèle ; Niveau de base ; Pente de versant ; SableBase level ; Carrying capacity ; Experimentation ; Fluvial processes ; Grain size distribution ; Gravel ; Hydraulic works ; Model ; River bed ; Sand ; Slope gradient ; Stream flowThe gravel-sand transition: flume study of channel response to reduced slope
Auteur(s) et Affiliation(s)
SAMBROOK SMITH, G.H.
School of Biological and Earth Sciences, Liverpool John Moores University, Liverpool, Royaume-Uni
Description :
This paper reports flume experiments with a bimodal gravel/sand bed and sediment feed, designed to investigate river channel response to declining slope. The AA. simulated a series of sites along a concave profile approaching a local base level and undergoing a transition from gravel to sand bed; it also models the effect of a rise in base level on a fixed site. The results support the view that the gravel-sand transition along river channels with a local base level control is assisted by positive feedback between changes in bed surface texture and near-bed flow.
Type de document :
Article de périodique
Source :
Geomorphology (Amsterdam), issn : 0169-555X, 1996, vol. 16, n°. 2, p. 147-159, Collation : Illustration, Références bibliographiques : 30 ref.
Date :
1996
Editeur :
Pays édition : Pays-Bas, Amsterdam, Elsevier
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)