IGB

Connexion

(Article of periodic en Anglais - 2008)

Document title

Bed morphology and generation of step-pool channels

Authors(s) and Affiliation(s)

WEICHERT R.B. (1) ; BEZZOLA G.R. (2) ; MINOR H.-E. (3) ;
(1) Beller Consult, Freiburg, ALLEMAGNE
(2) Federal Office for the Environment, FOEN, Bern, SUISSE
(3) Lab. of Hydraulics, Hydrology and Glaciology, Zurich, SUISSE

Abstract

In this paper the results of the flume study are presented that focus on bed morphology and the generation of step-pool channels. In contrat to a number of other flume studies, the generation and configuration of steps and pools was studied with regard to its dependence on flume width. These results suggest that the bed roughness geometry develops towards a condition that provides the maximum bed stability for a given grain size distribution. In contrast to a variety of other studies, antidunes did not contribute to the generation of the step structures. However, the data of the presented study fits well into the region of antidune formation proposed by Kennedy for sand-bed rivers. The considerations of the Kennedy region of antidune formation and the analysis of planform step types depending on stream power both suggest that steep channels have a potential for self-stabilization by modifying the step-pool structure towards a geometry that provides maximum flow resistance and maximum bed stability

Source

Article of periodic

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

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

Millesime : 2008, vol. 33, no11 [pp. 1678-1692]

Bibliographic references : 2 p.

Collation : 12 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1639

Prodig - Bibliographie Géographique Internationale (BGI)
Refdoc record number (ud4) : 21383018 : Permanent link - XML version
Powered by Pxxo