The potential role of freshwater luminescence measurements in exploring runoff pathways in upland catchments

Hydrological Processes - Tập 15 Số 6 - Trang 989-1002 - 2001
Malcolm Newson1, Andy Baker1, Stewart Colin Mounsey2
1Department of Geography, University of Newcastle upon Tyne, NE1 7RU, UK
2Environment Agency, Ghyll Mount, Gillan Way, Penrith, CA11 9BP, UK

Tóm tắt

AbstractThe forested Coalburn catchment (1·5 km2) in northern England experiences episodic stream acidification. To plan for sustainable management of the plantation forest cycle, an understanding is required of the flow pathways and hydrochemical routing signatures of the organic and mineral soils that make up the source areas for runoff. A tentative mixing model, based on simple water chemistry exists for the major (terrestrial) sources and buffers of acidification; it is being expanded and consolidated by a detailed approach to the organic components of runoff, via sampling and analysis of the luminescence of surface waters at the catchment outlet and in two distinctive feeder streams. Luminescence measurements are presented that permit a simple apportionment of source areas. However, the technique also appears to have potential for identifying differential flow sourcing between the acrotelm and catotelm of intact peat deposits and for clarifying the influence of forest root systems in altering the organic chemistry of infiltrating waters. Applications may include the monitoring and prediction of coloured water events for the water supply industry. Copyright © 2001 John Wiley & Sons, Ltd.

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Hydrological Processes

Tập 15 Số 6

989-1002

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