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(Article of periodic en Anglais - 2010)

Document title

Rates, distributions and mechanisms of change in meander morphology over decadal timescales, River Dane, UK

Authors(s) and Affiliation(s)

HOOKE J.M. (1) ; YORKE L. (2) ;
(1) Dep. of Geography, Univ., Liverpool, ROYAUME-UNI
(2) Inst. of Geography & Earth Sciences, Univ., Aberystwyth, ROYAUME-UNI

Abstract

This paper uses evidence of 4 dates of aerial photography combined with annual field mapping and ground photography to examine the morphological changes and mechanisms of change in a series of bends on an active meandering river, the River Dane in NW England, over a 25 year period. Bank lines were mapped photogrametrically from air photos of 1984, 1996, 2001 and 2007 and the digitised courses compared in ArcGIS to produce calculations of erosional and depositional areas and rates. Mechanisms of morphological change are illustrated for 4 types of bends: new, rapid growth bend; sharp-angled bend with mid-channel bar development; symmetric migrating bend; and simple to compound bend development. The changes take place in phases that are not simply related to discharge but to inherent sequences and feedbacks in development of bars and bend morphology and timescales for these are identified

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, no13 [pp. 1601-1614]

Bibliographic references : 1 p.

Collation : 12 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.2079

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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