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(Article of periodic en Anglais - 1997)

Document title

Process-form interactions in unstable sand-bed river channels : a numerical modeling approach

Authors(s) and Affiliation(s)

SIMON A. (1) ; DARBY S.E. ;
(1) USDA-Agricultural Research Service, National Sedimentation Laboratory, Oxford, ETATS-UNIS

Abstract

A deterministic numerical model of bed deformation and channel widening, which accounts for specific mechanisms of bank erosion and collapse, is used to analyze morphological and flow-energy parameters in adjusting sand-bed channels, for a range of simulated fluvial environments. Simulated channels with a range of assumed boundary-material characteristics were subjected to identical disturbances imposed by reducing the supply of sediment from upstream. The importance of channel widening in controlling and reducing the flow depth of a given discharge and average boundary shear stress is highlighted for the silt- and sand-bank cases

Source

Article of periodic

published at : Geomorphology / ISSN 0169-555X

Editor : Elsevier, Amsterdam - PAYS-BAS (1987)

Millesime : 1997, vol. 21, no2 [pp. 85-106]

Bibliographic references : 33 ref.

Collation : Illustration ;

Language

Anglais

INIST-CNRS, Cote INIST : 21151

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 1998.
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