Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4978045 | Environmental Modelling & Software | 2017 | 15 Pages |
Abstract
A large proportion of the uncertainty surrounding catchment sediment budget modelling has been attributed to sediment supplied from riverbank erosion. Some of the variables influencing riverbank erosion are bend curvature, specific streampower, riparian vegetation, and in some instances sand and gravel extraction. The empirical relationship between these variables and observed riverbank erosion across 78Â km of the Upper Brisbane River, Australia was investigated. No significant relationship was found between curvature, specific streampower and riverbank erosion. The role of riparian vegetation relative to sediment supply from riverbank erosion varied with spatial location, susceptibility of a reach to erosion, and human disturbance such as sand and gravel extraction. Despite not having data on substrate type the model described approximately 37% of the variation in observed riverbank erosion. It appears that inclusion of a management practice factor in riverbank erosion models is justified, where appropriate, and may improve model performance.
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Physical Sciences and Engineering
Computer Science
Software
Authors
Joseph M. McMahon, Jon M. Olley, Andrew P. Brooks, James C.R. Smart, Calvin W. Rose, Graeme Curwen, John Spencer, Ben Stewart-Koster,