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    Sources of Anthropogenic 14C to the North Sea

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    Author
    Gulliver, P.
    Cook, G. T.
    MacKenzie, A. B.
    Naysmith, P.
    Anderson, R.
    Issue Date
    2004-01-01
    Keywords
    Atlantic Ocean
    biota
    C 14
    carbon
    coastal environment
    concentration
    dissolved materials
    Europe
    Great Britain
    isotopes
    marine environment
    metals
    North Atlantic
    North Sea
    nuclear energy
    nuclear facilities
    pollution
    power plants
    radioactive isotopes
    radioactive waste
    radioactivity
    sea water
    spatial variations
    Tc 99
    technetium
    United Kingdom
    waste disposal
    Western Europe
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    Citation
    Gulliver, P., Cook, G. T., MacKenzie, A. B., Naysmith, P., & Anderson, R. (2004). Sources of anthropogenic 14C to the North Sea. Radiocarbon, 46(2), 869-875.
    Publisher
    Department of Geosciences, The University of Arizona
    Journal
    Radiocarbon
    Description
    From the 18th International Radiocarbon Conference held in Wellington, New Zealand, September 1-5, 2003.
    URI
    http://hdl.handle.net/10150/654950
    DOI
    10.1017/S0033822200035906
    Additional Links
    http://radiocarbon.webhost.uits.arizona.edu/
    Abstract
    The Sellafield nuclear fuel reprocessing plant on the northwest coast of England is the largest source of anthropogenic radiocarbon to the UK coastal environment. In a mid-1990s study of 14C distribution around the UK coast, the pattern of dilution with increasing distance from Sellafield appeared to be perturbed by anomalously high 14C activities in marine biota in the coastal environment of northeast England. This present study was undertaken during 1998 and 1999 to determine whether this 14C enhancement was due to Sellafield or the nuclear power plants on the east coast. Seawater, seaweed (Fucus sp.), and mussel (Mytilus edulis) samples that were collected from the vicinity of the Torness and Hartlepool advanced gas-cooled reactor (AGR) nuclear power stations were all enhanced above the contemporary regional background activity derived from natural production and atmospheric nuclear weapons testing. We used previously published dilution factors and transfer times for 99Tc between Sellafield and various points on the UK coast to determine likely Sellafield-derived 14C contributions to the activities at the nuclear power plant sites. The results suggest that the activities observed at Torness, which are only marginally enhanced above the natural background activity, are possibly due to discharges from Sellafield; however, the significant 14C enhancements at Hartlepool are not Sellafield-derived. Furthermore, since both reactors have the same fundamental design, the low activities at the Torness AGR imply that the activities at Hartlepool are not from the AGR, suggesting that there is an input of 14C to the marine environment in the vicinity of Hartlepool which is probably non-nuclear-power related. However, there is no other authorized site in the area that could account for the observed 14C enrichments; therefore, further research is required to ascertain the source of this 14C.
    Type
    Proceedings
    text
    Language
    en
    ISSN
    0033-8222
    ae974a485f413a2113503eed53cd6c53
    10.1017/S0033822200035906
    Scopus Count
    Collections
    Radiocarbon, Volume 46, Number 2 (2004)

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