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Effects of Skewness on the Morphological Response of Unconfined Alluvial Meandering Streams in a Laboratory Flume

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Title: Effects of Skewness on the Morphological Response of Unconfined Alluvial Meandering Streams in a Laboratory Flume
Author: Good, Ryan
Department: School of Engineering
Program: Engineering
Advisor: Binns, Andrew
Abstract: Rivers typically follow a meandering pattern where, over time, the river adjusts its morphology to minimize the channel slope. The purpose of the research is to better understand the morphological patterns associated with skewed meander bends in an unconfined alluvial channel. Physical modelling of meandering streams with three different skewness coefficients was conducted in a laboratory flume. Sediment was collected at the outlet to quantify transport rates, the bed was monitored using Structure-from-Motion photogrammetry, and flow rates were monitored with an ultrasonic flowmeter. The flow was stopped periodically to quantify the morphological development of the stream with time. The results provide insight into the time to development of morphological changes as well as the physical processes that dictate the scale and pattern of the changes observed. The results included channel geometry adjustments to reduce the bed shear stress and energy grade line slope, as well as observations on morphological patterns.
URI: http://hdl.handle.net/10214/14099
Date: 2018-06
Rights: Attribution-NonCommercial-NoDerivs 2.5 Canada
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Attribution-NonCommercial-NoDerivs 2.5 Canada Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 2.5 Canada