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(Article of periodic en Anglais - 1999)

Document title

Velocity reversals and sediment sorting in pools and riffles controlled by channel constrictions

Authors(s) and Affiliation(s)

THOMPSON D.M. ; WOHL E.E. ; JARRETT R.D. ;

Abstract

A model of pool maintenance and sediment sorting is proposed that relies on constriction of flow by recirculating eddies and flow divergence over the exit-slopes of pools. According to the model, a narrow zone of high velocity occurs in the center of pools, creating scour. The model is tested with field and flume measurements of velocity, water-surface elevation, and size of bed sediments in recirculating-eddy influenced pools. Local reversals of the water-surface gradient were measured in the field and a velocity reversal was created in the flume

Source

Article of periodic

published at : Geomorphology / ISSN 0169-555X

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

Millesime : 1999, vol. 27, no3-4 [pp. 229-241]

Bibliographic references : 28 ref.

Collation : Illustration ;

Language

Anglais

INIST-CNRS, Cote INIST : 21151

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 1999.
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