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(Article of periodic en Anglais - 2011)

Document title

Evolution of an advancing gravel front: observations from Vedder Canal, British Columbia

Authors(s) and Affiliation(s)

FERGUSON R.I. (1) ; BLOOMER D.J. (2) ; CHURCH M. (3) ;
(1) Dep. of Geography, Univ., Durham, ROYAUME-UNI
(2) Cumbria County Council, ROYAUME-UNI
(3) Dep. of Geography, Univ. of British Columbia, Vancouver, CANADA

Abstract

The new channel (Vedder Canal) had a fine bed and a much lower slope than the gravel-bed river immediately upstream. Changes in morphology and sedimentology as gravel advanced into and along the Canal are documented using air photos, historical surveys, and fieldwork. The channel aggraded and steepened until stabilized by occasional gravel extraction in recent decades. The deposited material fines progressively along the Canal but the gravel front has retained an abrupt appearance because it has advanced by the sequential development of discrete gravel tops on initially sandy alternate bars. Calculations show that even though the gravel bed at the head of the Canal is almost unimodal, size-selective transport during floods can account for the strong bimodality farther downstream

Source

Article of periodic

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

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

Millesime : 2011, vol. 36, no9 [pp. 1172-1182]

Bibliographic references : 1 p.

Collation : 9 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2142

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