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Calculations of the deposition of 137Cs from nuclear bomb tests and from the Chernobyl accident over the province of Skåne in the southern part of Sweden based on precipitation

Author:
  • Isaksson Mats
  • Bengt Erlandsson
  • Maj-Lena Linderson
Publishing year: 2000
Language: English
Pages: 97-112
Publication/Series: Journal of Environmental Radioactivity
Volume: 49
Document type: Journal article
Publisher: Elsevier

Abstract english

The deposition of 137Cs over the province of Ska>ne (an area of about 100]100 km2) in the southern part of Sweden has been investigated. The origin of the deposition of 137Cs is, in about equal parts, from nuclear weapons tests and from the Chernobyl nuclear accident and amounts to about 1}3 kBq/m2. The activity concentrations of 134Cs and 137Cs in soil samples from 16 sites distributed in a grid pattern over the investigated area have been measured and the depositions from the nuclear weapons tests and from the Chernobyl accident have been separated. These pre- and post Chernobyl activities have been compared with depositions calculated from measurements of the activity concentrations of 134Cs and 137Cs in precipitation at two places and from measurements of the precipitation from a network of between 113 and 143 precipitation stations. Comparisons with in situ measurements and with aerial survey measurements have also been made. The agreement is good and it has been possible to gain a good and detailed knowledge in retrospect of the deposition from measurements of the deposition per mm of precipitation from just a few stations, and of the precipitation from a network of stations.

Keywords

  • Environmental Sciences
  • deposition
  • precipitation
  • radiocaesium
  • 137Cs
  • global fallout
  • Chernobyl fallout

Other

Published
  • ISSN: 1879-1700
Maj-Lena Linderson
E-mail: maj-lena [dot] linderson [at] nateko [dot] lu [dot] se

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Department of Physical Geography and Ecosystem Science
Lund University
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