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Sediment sources and transport pathways in a rural catchment, Herefordshire, UK

Gruszowski, K.E. and Foster, Ian D.L. and Lees, J.A. and Charlesworth, S.M. (2003) Sediment sources and transport pathways in a rural catchment, Herefordshire, UK. Hydrological Processes, 17 (13). pp. 2665-2681. ISSN 0885-6087

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Official URL: http://dx.doi.org/10.1002/hyp.1296

Abstract

The relative significance of primary and secondary suspended sediment sources has been identified in a small (15 km2) agricultural catchment through the application of a linear unmixing model using mineral magnetic, geochemical and radionuclide signatures of fine sediments. Roads appear to be important as a secondary source of suspended sediment and in the conveyance of topsoils to the river channel. Roads also alter the source signatures of sediment in transport, especially that derived from agricultural topsoils. Modelling suggests that c. 30% of the suspended sediment collected from suspended sediment traps in the River Leadon were derived from, or transported via, roads. Relative contributions from primary sources of c. 43% and c. 27% were estimated from a combined (subsoil and channel bank) subsurface source, and a combined (arable and grassland) topsoil source, respectively.

Item Type:Article
Research Community:University of Westminster > Life Sciences, School of
ID Code:5989
Deposited On:12 Feb 2009 11:48
Last Modified:16 Dec 2009 12:42

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