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Spatio-temporal scaling of channels in braided streams

The spatio-temporal scaling relationship for individual channels in braided streams is shown to be identical to the spatio-temporal scaling associated with constant Froude number, e.g. F r=1. A means to derive this relationship is developed from a new theory of sediment transport. The mechanism by w...

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Bibliographic Details
Published in:Journal of hydrology (Amsterdam) 2006-05, Vol.322 (1), p.192-198
Main Authors: Hunt, A.G., Grant, G.E., Gupta, V.K.
Format: Article
Language:English
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Summary:The spatio-temporal scaling relationship for individual channels in braided streams is shown to be identical to the spatio-temporal scaling associated with constant Froude number, e.g. F r=1. A means to derive this relationship is developed from a new theory of sediment transport. The mechanism by which the F r=1 condition apparently governs the scaling seems to derive from the sensitivity of sediment transport to flow fluctuations when F r=1. The condition F r=1 is also given a theoretical basis using arguments from surface roughness.
ISSN:0022-1694
1879-2707
DOI:10.1016/j.jhydrol.2005.02.034