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Lake catchment based studies of erosion and denudation in the merevale catchment, Warwickshire, U.K.
Author(s) -
Foster I. D. L.,
Dearing J. A.,
Simpson A.,
Carter A. D.,
Appleby P. G.
Publication year - 1985
Publication title -
earth surface processes and landforms
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.294
H-Index - 127
eISSN - 1096-9837
pISSN - 0197-9337
DOI - 10.1002/esp.3290100108
Subject(s) - denudation , sediment , sedimentary budget , erosion , drainage basin , hydrology (agriculture) , chronology , geology , extrapolation , environmental science , sediment transport , geomorphology , geography , paleontology , mathematical analysis , cartography , geotechnical engineering , mathematics , tectonics
Sediment yields estimated from contemporary stream monitoring of suspended sediment in the Merevale forested catchment, North Warwickshire, were compared with the sediment yield record obtained from analysis of lake sediment in the downstream reservoir. Total sediment volume and mass for nine periods since 1861 were calculated by extrapolation of synchronous levels in 54 cores, identified from magnetic susceptibility and other magnetic measurements, and by using 210 Pb and 137 Cs analysis to provide an absolute sediment chronology. Sediment yield estimated from the two methods show comparable but low (50‐200 kg ha −1 yr −1 ) levels of sediment loss. While suggesting that lake sediments can be a useful means for extending the period over which contemporary monitoring exists, the study stresses the need for detailed historical records of land use and climate against which long term sediment yield records can be evaluated.