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(Article of periodic en Anglais - 2010)

Document title

Flow fields in tightly curving meander bends of low width-depth ratio

Authors(s) and Affiliation(s)

NANSON R.A. (1) ;
(1) Univ. of New South Wales, Canberra, AUSTRALIE

Abstract

This paper documents the flow structures that result from the unsually narrow cross-sectional geometries and highly sinuous peatland changes at Barrington Tops (200 km north of Sydney) at flows measured up to bankfull. Two subsets of these bends were examined in relation to their patterns of cross-stream flow relative to the channel boundary. In these channels, separation zones are important for protecting both the channel bed and banks from scour. Three-dimensional near bankfull flow fields are presented for one bend with a meander pool; inward shifting of the maximum velocity filaments and limited sediment supply are proposed as mechanisms for the development and maintenance of these features. These flow data in narrow and deep peatland channels demonstrate very different flow patterns and morphological characteristics relative to the more commonly studied wide, shallow channels with more abundant sediment

Source

Article of periodic

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

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

Millesime : 2010, vol. 35, no2 [pp. 119-135]

Bibliographic references : 64 ref.

Collation : 5 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1878

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2010
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