Analysis of fundamental physical factors influencing channel bank erosion: results for contrasting catchments in England and Wales

Janes, VJJ, Nicholas, AP, Collins, AL and Quine, TA (2017) Analysis of fundamental physical factors influencing channel bank erosion: results for contrasting catchments in England and Wales. ENVIRONMENTAL EARTH SCIENCES, 76 (7). 307-.

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Official URL: http://dx.doi.org/10.1007/s12665-017-6593-x

Abstract

Channel bank erosion processes are controlled by numerous factors and as such are both temporally and spatially variable. The significance of channel bank erosion to the sediment budget is difficult to quantify without extensive fieldwork/data analysis. In this study, the importance of key physical factors controlling channel bank erosion, including channel slope, upstream catchment area, channel confinement, and sinuosity, was explored using regression analysis. The resulting analysis can be used in practical studies to provide a first approximation of bank erosion rates (in catchments similar to those investigated). A data set of channel bank erosion rates covering eight contrasting river catchments across England and Wales, over a time period of up to 150 years, was created using a modified GIS methodology. The best predictors were found to be upstream area, channel confinement, and sinuosity with respect to dimensionless width-averaged retreat rates (m m−1 yr−1). Notwithstanding these relationships, the results highlight the variability of the magnitude of sediment production by channel bank erosion both within and between catchments.

Item Type:	Article
Uncontrolled Keywords:	Channel bank erosion, Sediment, Channel confinement, Sinuosity
Divisions:	Faculty of Science and Engineering > School of Environmental Sciences
Depositing User:	Symplectic Admin
Date Deposited:	06 Jul 2022 07:34
Last Modified:	17 Mar 2024 14:35
DOI:	10.1007/s12665-017-6593-x
Open Access URL:	https://link.springer.com/article/10.1007/s12665-0...
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3157818