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Discharge and sediment supply controls on erosion and deposition in a dynamic alluvial channel

Auteur(s) et Affiliation(s)

LANE, S.N.
Department of Geography, University of Cambridge, Cambridge, CB2 3, Royaume-Uni


Description :
This paper presents the first accurate data from a dynamic alluvial channel that describe the interrelated effect on channel morphological change of both discharge and sediment supply variations over different timescales. Reliable information on the spatial patterns of erosion and deposition were obtained using combined photogrammetry and tacheometric survey of the meltwater stream of a glacierised catchment over a 5 week period. The implications of these findings for fluvial geomorphology in general are considered.

Mots-clés :
Alpes - Bilan sédimentaire - Capacité de charge - Chenal anastomosé - Dynamique fluviale - Débit - Eau de fonte - Erosion fluviatile - Fluviatile - Glaciaire - Géométrie hydraulique - Lit fluvial - Photogrammétrie - Suisse - Valais - Variation spatiale
Alps (The) - Braided channel - Carrying capacity - Channel geometry - Discharge - Fluvial dynamics - Fluvial erosion - Fluvial processes - Glacial features - Meltwater - Photogrammetry - River bed - Sediment budget - Spatial variation - Switzerland - Valais

Type de document :
Article de périodique

Source :
Geomorphology (Amsterdam), issn : 0169-555X, 1996, vol. 15, n°. 1, p. 1-15, Collation : Illustration, Références bibliographiques : 29 ref.

Langue :
Anglais
Date :
1996

Editeur :
Pays édition : Pays-Bas, Amsterdam, Elsevier

Droits :
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