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High resolution profile of radiocaesium deposition in Loch Lomond sediments - a failure of 137Cs dating

Eades, L.J., Farmer, J.G., MacKenzie, A.B., Kirika, A., and Bailey-Watts, A.E. (1998) High resolution profile of radiocaesium deposition in Loch Lomond sediments - a failure of 137Cs dating. Journal of Environmental Radioactivity, 39 (2). pp. 107-115. ISSN 0265-931X (doi:10.1016/S0265-931X(97)00054-4)

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Publisher's URL: http://dx.doi.org/10.1016/S0265-931X(97)00054-4

Abstract

A sediment core from the southern basin of freshwater Loch Lomond, Scotland, was thinly sectioned at 3mm intervals and analysed for radiocaesium, present as a result of fallout from the atmospheric nuclear weapons' testing programme of the 1950s and 1960s and from the Chernobyl reactor accident of April 1986. The high-resolution sampling enabled much improved resolution of peaks from weapons testing fallout and Chernobyl and led to the estimation of a sedimentation rate (30.9mgcm-2y-1) for which the uncertainty was a factor of five times less than that of a previous study based on a 1cm sampling frequency. Further potential advantages of high-resolution sampling in distinguishing possible influences upon the vertical distribution of radiocaesium in sediments are discussed.

Item Type:Article
Status:Published
Refereed:Yes
Glasgow Author(s):MacKenzie, Prof Angus
Authors: Eades, L.J., Farmer, J.G., MacKenzie, A.B., Kirika, A., and Bailey-Watts, A.E.
Subjects:G Geography. Anthropology. Recreation > GE Environmental Sciences
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:Journal of Environmental Radioactivity
Journal Abbr.:JER
ISSN:0265-931X
ISSN (Online):1879-1700
Published Online:11 June 1998

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