Plutonium in the marine environment at Thule, NW-Greenland after a nuclear weapons accident
In January 1968, a B52 plane carrying 4 nuclear weapon!: crashed on the sea ice similar to 12 km from the Thule Air Base, in northwest Greenland. The benthic marine environment in the 180-230 m deep Bylot Sound was then contaminated with similar to1.4 TBq Pu-239,Pu-240 (similar to0.5 kg). The site w...
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Online Access: | https://orbit.dtu.dk/en/publications/e4e5a529-3753-4a52-bf4e-89d124ff31ac https://doi.org/10.1016/S1569-4860(91)80004-8 |
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ftdtupubl:oai:pure.atira.dk:publications/e4e5a529-3753-4a52-bf4e-89d124ff31ac 2024-04-21T08:03:33+00:00 Plutonium in the marine environment at Thule, NW-Greenland after a nuclear weapons accident Dahlgaard, H. Eriksson, M. Ilus, E. Ryan, T. McMahon, C.A. Nielsen, S.P. Kudo, A. 2001 https://orbit.dtu.dk/en/publications/e4e5a529-3753-4a52-bf4e-89d124ff31ac https://doi.org/10.1016/S1569-4860(91)80004-8 eng eng Elsevier https://orbit.dtu.dk/en/publications/e4e5a529-3753-4a52-bf4e-89d124ff31ac urn:ISBN:0-08-043425-8 info:eu-repo/semantics/restrictedAccess Dahlgaard , H , Eriksson , M , Ilus , E , Ryan , T , McMahon , C A & Nielsen , S P 2001 , Plutonium in the marine environment at Thule, NW-Greenland after a nuclear weapons accident . in A Kudo (ed.) , Plutonium in the environment. Edited proceedings . Elsevier , Oxford , Radioactivity in the Environment , vol. 1 , pp. 15-30 , 2nd Invited International Symposium , Osaka , Japan , 09/11/1999 . https://doi.org/10.1016/S1569-4860(91)80004-8 Nuklear sikkerhed Environmental radioactivity Plutonium Americium Isotope ratios Nuclear weapons Accident Arctic Greenland Marine environment Marine sediments Marine biota Transfer factors Excess Pb-210 Sedimentation rate Bioturbation /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water contributionToPeriodical 2001 ftdtupubl https://doi.org/10.1016/S1569-4860(91)80004-8 2024-03-27T15:44:13Z In January 1968, a B52 plane carrying 4 nuclear weapon!: crashed on the sea ice similar to 12 km from the Thule Air Base, in northwest Greenland. The benthic marine environment in the 180-230 m deep Bylot Sound was then contaminated with similar to1.4 TBq Pu-239,Pu-240 (similar to0.5 kg). The site was revisited in August 1997, 29 years after the accident. Water and brown algae data indicate that plutonium is not transported from the contaminated sediments into the surface waters in significant quantities. Sediment core data only indicate minor translocation of plutonium from the accident to the area outside Bylot Sound. The present data support an earlier quantification of the sedimentation rate as 2-4 mm per year, i.e. 5-12 cm during the 29 years since the accident. Biological activity has mixed accident plutonium much deeper down, to 20-30 cm, and the 5-12 cm new sediment has been efficiently mixed into the contaminated layer. In addition to the classical bioturbation mixing the upper approximate to5 cm, the plutonium data indicate the existence of a deeper bioturbation gradually decreasing with depth. Transfer of plutonium to benthic biota is low leading to 1-2 orders of magnitude lower concentrations in biota than in sediments. Some biota groups show a somewhat higher uptake of americium than of plutonium. Sediment samples with weapons plutonium from the accident show a significant variation in Pu-240/Pu-239 atom ratios in the range 0.027-0.057. This supports the hypothesis that the Thule plutonium originates from at least two sources of different quality. The radioecological implication of the observed variations is that the use of plutonium isotope ratios in quantitatively determining the influence of different plutonium sources is a very complex affair requiring substantial data sets. Article in Journal/Newspaper Greenland Sea ice Thule Air Thule Air Base Thule Technical University of Denmark: DTU Orbit |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Nuklear sikkerhed Environmental radioactivity Plutonium Americium Isotope ratios Nuclear weapons Accident Arctic Greenland Marine environment Marine sediments Marine biota Transfer factors Excess Pb-210 Sedimentation rate Bioturbation /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Nuklear sikkerhed Environmental radioactivity Plutonium Americium Isotope ratios Nuclear weapons Accident Arctic Greenland Marine environment Marine sediments Marine biota Transfer factors Excess Pb-210 Sedimentation rate Bioturbation /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Dahlgaard, H. Eriksson, M. Ilus, E. Ryan, T. McMahon, C.A. Nielsen, S.P. Plutonium in the marine environment at Thule, NW-Greenland after a nuclear weapons accident |
topic_facet |
Nuklear sikkerhed Environmental radioactivity Plutonium Americium Isotope ratios Nuclear weapons Accident Arctic Greenland Marine environment Marine sediments Marine biota Transfer factors Excess Pb-210 Sedimentation rate Bioturbation /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
In January 1968, a B52 plane carrying 4 nuclear weapon!: crashed on the sea ice similar to 12 km from the Thule Air Base, in northwest Greenland. The benthic marine environment in the 180-230 m deep Bylot Sound was then contaminated with similar to1.4 TBq Pu-239,Pu-240 (similar to0.5 kg). The site was revisited in August 1997, 29 years after the accident. Water and brown algae data indicate that plutonium is not transported from the contaminated sediments into the surface waters in significant quantities. Sediment core data only indicate minor translocation of plutonium from the accident to the area outside Bylot Sound. The present data support an earlier quantification of the sedimentation rate as 2-4 mm per year, i.e. 5-12 cm during the 29 years since the accident. Biological activity has mixed accident plutonium much deeper down, to 20-30 cm, and the 5-12 cm new sediment has been efficiently mixed into the contaminated layer. In addition to the classical bioturbation mixing the upper approximate to5 cm, the plutonium data indicate the existence of a deeper bioturbation gradually decreasing with depth. Transfer of plutonium to benthic biota is low leading to 1-2 orders of magnitude lower concentrations in biota than in sediments. Some biota groups show a somewhat higher uptake of americium than of plutonium. Sediment samples with weapons plutonium from the accident show a significant variation in Pu-240/Pu-239 atom ratios in the range 0.027-0.057. This supports the hypothesis that the Thule plutonium originates from at least two sources of different quality. The radioecological implication of the observed variations is that the use of plutonium isotope ratios in quantitatively determining the influence of different plutonium sources is a very complex affair requiring substantial data sets. |
author2 |
Kudo, A. |
format |
Article in Journal/Newspaper |
author |
Dahlgaard, H. Eriksson, M. Ilus, E. Ryan, T. McMahon, C.A. Nielsen, S.P. |
author_facet |
Dahlgaard, H. Eriksson, M. Ilus, E. Ryan, T. McMahon, C.A. Nielsen, S.P. |
author_sort |
Dahlgaard, H. |
title |
Plutonium in the marine environment at Thule, NW-Greenland after a nuclear weapons accident |
title_short |
Plutonium in the marine environment at Thule, NW-Greenland after a nuclear weapons accident |
title_full |
Plutonium in the marine environment at Thule, NW-Greenland after a nuclear weapons accident |
title_fullStr |
Plutonium in the marine environment at Thule, NW-Greenland after a nuclear weapons accident |
title_full_unstemmed |
Plutonium in the marine environment at Thule, NW-Greenland after a nuclear weapons accident |
title_sort |
plutonium in the marine environment at thule, nw-greenland after a nuclear weapons accident |
publisher |
Elsevier |
publishDate |
2001 |
url |
https://orbit.dtu.dk/en/publications/e4e5a529-3753-4a52-bf4e-89d124ff31ac https://doi.org/10.1016/S1569-4860(91)80004-8 |
genre |
Greenland Sea ice Thule Air Thule Air Base Thule |
genre_facet |
Greenland Sea ice Thule Air Thule Air Base Thule |
op_source |
Dahlgaard , H , Eriksson , M , Ilus , E , Ryan , T , McMahon , C A & Nielsen , S P 2001 , Plutonium in the marine environment at Thule, NW-Greenland after a nuclear weapons accident . in A Kudo (ed.) , Plutonium in the environment. Edited proceedings . Elsevier , Oxford , Radioactivity in the Environment , vol. 1 , pp. 15-30 , 2nd Invited International Symposium , Osaka , Japan , 09/11/1999 . https://doi.org/10.1016/S1569-4860(91)80004-8 |
op_relation |
https://orbit.dtu.dk/en/publications/e4e5a529-3753-4a52-bf4e-89d124ff31ac urn:ISBN:0-08-043425-8 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/S1569-4860(91)80004-8 |
_version_ |
1796943350845145088 |