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(Article of periodic en Anglais - 1989)

Document title

A model of channel response in disturbed alluvial channels

Authors(s) and Affiliation(s)

SIMON A. ;

Abstract

The adjustment of channel geometry and phases of channel evolution are characterized by six process-oriented stages of morphologic development : premodified, constructed, degradation, threshold, aggradation, and restabilization. Downcutting and toe removal during the degradation stage causes bank failure by mass wasking when the critical height and angle of the bank material is exceeded (threshold stage). Channel widening continues through the aggradation stage as the " slough line " develops as an initial site of lower-bank stability. Alternate channel bars form during the restabilization stage and represent incipient meandering of the channel

Source

Article of periodic

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

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

Millesime : 1989, vol. 14, no1 [pp. 11-26]

Bibliographic references : 29 réf.

Language

Anglais

Localisation

Centre national de la recherche scientifique

INIST-CNRS, Cote INIST : 17355

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