CGRG Bibliography of Canadian Geomorphology
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Author : Ashmore, P.
Date : 2009.
Title : Bed load and morpho-dynamics of gravel-bed rivers.
Publication : Eos Transactions AGU. 2009 Joint Assembly. The Meeting of the Americas. May 24-27, 2009. Toronto, Ontario, Canada.
Issue : 90(22), Joint Assembly Supplement.
Page(s) : Abstract GA71B-06.
Abstract
The morphology of gravel-bed rivers, and the transfer of bed load, are closely linked. Overall mean gravel flux is determined by total stream energy relative to grain size, and channel gradient and dimensions adjust to the sediment flux and water discharge supplied to the river. Large-scale depositional or erosional reaches reflect overall flux convergence or divergence and the residence times reflect characteristic floodplain morphology. At reach scale local morpho-dynamics is a manifestation (and integral part) of spatial and temporal variation in bed load flux. Movement of individual particles is 'slaved' to the bar- scale morphology and this provides a means of back-calculating bed load flux as well as insight into the transport process at this scale.
Bibliography of Canadian Geomorphology