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

Janes, Victoria and Nicholas, Andrew and Collins, Adrian L and Quine, T. A. (2017) Analysis of fundamental physical factors influencing channel bank erosion:results for contrasting catchments in England and Wales. Environmental Earth Sciences, 76. ISSN 1866-6280

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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 were 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 dataset 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 upstream area, channel confinement and sinuosity with respect to dimensionless width averaged retreat rates (m m-1yr-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:
Journal Article
Journal or Publication Title:
Environmental Earth Sciences
Additional Information:
The final publication is available at Springer via http://dx.doi.org/10.1007/s12665-017-6593-x
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1900/1904
Subjects:
ID Code:
85681
Deposited By:
Deposited On:
24 Mar 2017 09:08
Refereed?:
Yes
Published?:
Published
Last Modified:
19 Sep 2020 04:32