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
Subjects: University of Westminster > Science and Technology > Life Sciences, School of (No longer in use)
Depositing User: Miss Nina Watts
Date Deposited: 12 Feb 2009 11:48
Last Modified: 16 Dec 2009 12:42
URI: http://westminsterresearch.wmin.ac.uk/id/eprint/5989

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