The%20potential%20for%20colour%20to%20provide%20a%20robust%20alternative%20to%20high-cost%20sediment%20source%20fingerprinting%3A%20Assessment%20using%20eight%20catchments%20in%20England

The landslips present in the Semer ian corridors and a few larger patches of trees, especially in the catch- Water catchment were sampled to a depth of 10 cm using a non- ment of the lowermost tributary. [...] The un-mixing lemwithin this catchment whichwas likely due to the presence of sub- model results were presented as the median 25th and 75th percentile surface drains and the very flat terrain/clayey soils causing a finer range of predicted contributions from each source generated by the particle size in the sampled sediments compared to the source samples. [...] Blue discriminated between a group of samples from cultivated land, grassland and channel In the River Lyne study catchment, the colour tracers were able to banks and the remainder of the catchment. [...] Using The colour of the sediments from Bardale Beck is also slightly more the colour bi-plot agricultural topsoils are also shown to be the domi- similar to this source in the bi-plot than in the other sampling sites. [...] In the specific case of the CSF initiative in England, the results of the low-cost colour bi-plot method when combined with the visual field walking assessments of catchment sediment sources undertaken by CSFOs, is likely to afford a robust means of targeting mitigation to the most important landscape sources of the sediment problem.