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(Article of periodic en Anglais - 2004)

Document title

Phase-shifts in shear stress as an explanation for the maintenance of pool-riffle sequences

Authors(s) and Affiliation(s)

WILKINSON S.N. ; KELLER R.J. ; RUTHERFURD I.D. ;

Abstract

The AA. propose that, instead of being reversed, maxima and minima in shear stress are phase-shifted with respect to the pool-riffle sequence bedform profile, so that maximum shear stress occurs upstream of riffle crests at high flow, and downstream at low flow. Such phase-shifts produce gradients of shear stress that explain riffle deposition, and pool scour, at high flow, in accord with sediment continuity. This proposal is supported by results of a one-dimensional hydraulic model applied to the surveyed bathymetry of a pool-riffle sequence in a straight reach of a gravel-bed river, in southeastern Australia

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2004, vol. 29, no6 [pp. 737-753]

Bibliographic references : 52 ref.

Collation : Illustration ;

Language

Anglais

Localisation

Laboratoire INTERGEO - Paris

INIST-CNRS, Cote INIST : 17355

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2005.
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