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Distribution and flux of Pu-238, Pu-239,Pu-240, Am-241, Cs-137 and Pb-210 to high arctic lakes in the Thule district (Greenland)

Eriksson, M; Holm, Elis LU ; Roos, P and Dahlgaard, H (2004) In Journal of Environmental Radioactivity 75(3). p.285-299
Abstract
Environmental samples (soil, sediment and lake water) in the Thule area (NW Greenland) have been studied to assess the contamination of radionuclides originating from a nuclear weapons accident (the Thule accident in 1968). Four lakes were chosen at different distances from the point of impact with the Thule air base community situated in between. The sedimentation rates in the lakes varied from 0.4 mm a(-1) (5 a a(-1) to 1.6 mm a(-1) (82 mg cm(-2) a(-1)). With these sedimentation rates, it is not possible to resolve the Pu-239,Pu-240 global fallout peak from a possible Pu-239,Pu-240 "accident" peak in the sediment depth profiles. However, the Pu-239,Pu-240/Cs-137 and the Pu-238/Pu-239,Pu-240 ratios agreed well with global fallout ratios,... (More)
Environmental samples (soil, sediment and lake water) in the Thule area (NW Greenland) have been studied to assess the contamination of radionuclides originating from a nuclear weapons accident (the Thule accident in 1968). Four lakes were chosen at different distances from the point of impact with the Thule air base community situated in between. The sedimentation rates in the lakes varied from 0.4 mm a(-1) (5 a a(-1) to 1.6 mm a(-1) (82 mg cm(-2) a(-1)). With these sedimentation rates, it is not possible to resolve the Pu-239,Pu-240 global fallout peak from a possible Pu-239,Pu-240 "accident" peak in the sediment depth profiles. However, the Pu-239,Pu-240/Cs-137 and the Pu-238/Pu-239,Pu-240 ratios agreed well with global fallout ratios, indicating that plutonium originating from the accident had not reached these lakes. This also indicates that the Thule air base community has probably only been exposed to radionuclides from the accident to a very limited extent. A limited study showed that Pb-210 could not be used as a normalizing nuclide to explain the transport of transuranic elements from the catchment area to the lake, i.e. Pb-210 has a different transport mechanism from that of the transuranic elements studied in this investigation. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
remobilization, Thule accident, Thule, catchment, lakes, sediments, radio-lead, radiocesium, plutonium, Americium, fallout, arctic, radionuclides
in
Journal of Environmental Radioactivity
volume
75
issue
3
pages
285 - 299
publisher
Elsevier
external identifiers
  • pmid:15193794
  • wos:000222647900003
  • scopus:2942521095
ISSN
1879-1700
DOI
10.1016/j.jenvrad.2003.12.007
language
English
LU publication?
yes
id
75df0bf2-779e-43ab-a878-cca467647fd5 (old id 272813)
date added to LUP
2007-10-22 13:43:26
date last changed
2017-10-01 03:42:40
@article{75df0bf2-779e-43ab-a878-cca467647fd5,
  abstract     = {Environmental samples (soil, sediment and lake water) in the Thule area (NW Greenland) have been studied to assess the contamination of radionuclides originating from a nuclear weapons accident (the Thule accident in 1968). Four lakes were chosen at different distances from the point of impact with the Thule air base community situated in between. The sedimentation rates in the lakes varied from 0.4 mm a(-1) (5 a a(-1) to 1.6 mm a(-1) (82 mg cm(-2) a(-1)). With these sedimentation rates, it is not possible to resolve the Pu-239,Pu-240 global fallout peak from a possible Pu-239,Pu-240 "accident" peak in the sediment depth profiles. However, the Pu-239,Pu-240/Cs-137 and the Pu-238/Pu-239,Pu-240 ratios agreed well with global fallout ratios, indicating that plutonium originating from the accident had not reached these lakes. This also indicates that the Thule air base community has probably only been exposed to radionuclides from the accident to a very limited extent. A limited study showed that Pb-210 could not be used as a normalizing nuclide to explain the transport of transuranic elements from the catchment area to the lake, i.e. Pb-210 has a different transport mechanism from that of the transuranic elements studied in this investigation.},
  author       = {Eriksson, M and Holm, Elis and Roos, P and Dahlgaard, H},
  issn         = {1879-1700},
  keyword      = {remobilization,Thule accident,Thule,catchment,lakes,sediments,radio-lead,radiocesium,plutonium,Americium,fallout,arctic,radionuclides},
  language     = {eng},
  number       = {3},
  pages        = {285--299},
  publisher    = {Elsevier},
  series       = {Journal of Environmental Radioactivity},
  title        = {Distribution and flux of Pu-238, Pu-239,Pu-240, Am-241, Cs-137 and Pb-210 to high arctic lakes in the Thule district (Greenland)},
  url          = {http://dx.doi.org/10.1016/j.jenvrad.2003.12.007},
  volume       = {75},
  year         = {2004},
}