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(Article of periodic en Anglais - 2012)

Document title

Morphodynamics of an extended bar complex, Fraser River, British Columbia

Authors(s) and Affiliation(s)

HAM D. (1) ; CHURCH M. (2) ;
(1) Northwest Hydraulic Consultants, British Columbia, North Vancouver, CANADA
(2) Dep. of Geography, Univ. of British Columbia, Vancouver, CANADA

Abstract

The AA. investigate large-scale morphologic changes over a 65-year period in a major sedimentation zone within the 50 km long wandering gravel-bed reach of Lower Fraser River. This reach remains in a relatively pristine state. A template of channel evolutionary development is identified, consisting of extended periods of orderly accretion of unit bars by deposition of gravel sheets, controlled by the major riffles in the river. When this process constricts channel conveyance an avulsion occurs and the major bar complexes are reorganized. The recognition of fairly predictable short-term behavior can potentially aid the development of models of sediment transport and channel evolution. Accordingly, results of the detailed descriptive analysis are compared with a GIS-based probabilistic approach developed from transition-state analysis.

Source

Article of periodic

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

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

Millesime : 2012, vol. 37, no10 [pp. 1074-1089]

Bibliographic references : 1 p.

Collation : 11 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.3231

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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