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Please use this identifier to cite or link to this item: http://hdl.handle.net/11129/2452

Title: Most Influential Parameters for the Bed-Load Sediment Flux Equations Used in Alluvial Rivers
Authors: Khorram, Saeed
Ergil, Mustafa
Eastern Mediterranean University, Faculty of Engineering, Department of Civil Engineering
Keywords: alluvial rivers
bed-load flux
bed-load transport rate
multilinear regression
sensitivity analysis
sediment transport equations
Issue Date: Sep-2010
Publisher: Wiley
Abstract: Problems of bed-load sediment transport equations in alluvial rivers are addressed in this study where user-friendly parameters were developed. To determine the influences of 300 parameters on the final result, 52 selected bed-load equations for noncohesive particles (sand and gravel separately) were gathered and individually investigated. The influences of discrepancies among the computed and measured datasets were obtained by sensitivity analysis through multilinear regression method. The most influential parameters for the bed-load sediment flux equations used to describe sand particles in alluvial rivers are: the gravitational power due to Shields’ parameter with an energy slope, the universal stream power due to critical Shields’ parameter with an energy slope, the Shields’ parameter ratio, the critical unit stream power, and the Shields’ parameter with energy slope. For gravel particles, the most influential parameters are: the universal stream power due to critical Shields’ parameter with an energy slope, the Shields’ parameter ratio, the gravitational power due to Shields’ parameter with an energy slope, the Shields’ parameter with an energy slope, and the Froude number of the channel. It is expected that researchers working in this field will be able to use these predicted parameters to generate new bed-load sediment flux equations that give results that more closely agree with the actual values measured in alluvial rivers.
Description: Due to copyright restrictions, the access to the publisher version (published version) of this article is only available via subscription. You may click URI (with DOI: 10.1111/j.1752-1688.2010.00468.x) and have access to the Publisher Version of this article through the publisher web site or online databases, if your Library or institution has subscription to the related journal or publication.
URI: http://dx.doi.org/10.1111/j.1752-1688.2010.00468.x
http://hdl.handle.net/11129/2452
ISSN: 1093-474X
Appears in Collections:CE – Journal Articles: Publisher & Author Versions (Post-Print Author Versions) – Civil Engineering

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