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    A Recent History of 14C, 137Cs, 210Pb, and 241Am Accumulation at Two Irish Peat Bog Sites: An East versus West Coast Comparison

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    Author
    Gallagher, Donal
    McGee, E. J.
    Mitchell, P. I.
    Issue Date
    2001-01-01
    Keywords
    deposition
    Am 241
    americium
    radioactive fallout
    patterns
    pollutants
    lead
    Pb 210
    Ireland
    cesium
    alkali metals
    Cs 137
    actinides
    mires
    bogs
    peatlands
    pollution
    metals
    Europe
    Western Europe
    C 14
    carbon
    isotopes
    radioactive isotopes
    geochemistry
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    Citation
    Gallagher, D., McGee, E. J., & Mitchell, P. I. (2001). A recent history of 14C, 137 Cs, 210 Pb, and 241Am accumulation at two Irish peat bog sites: An east versus west coast comparison. Radiocarbon, 43(2B), 517-525.
    Publisher
    Department of Geosciences, The University of Arizona
    Journal
    Radiocarbon
    Description
    From the 17th International Radiocarbon Conference held in Jerusalem, Israel, June 18-23, 2000.
    URI
    http://hdl.handle.net/10150/654418
    DOI
    10.1017/S0033822200041175
    Additional Links
    http://radiocarbon.webhost.uits.arizona.edu/
    Abstract
    Data on radiocarbon (14C), 137Cs, 210Pb, and 241Am levels in an ombrotrophic peat sequence from a montane site on the east coast of Ireland are compared with data from a similar sequence at an Atlantic peatland site on the west coast. The 14C profiles from the west and east coasts show a broadly similar pattern. Levels increase from 100 pMC or less in the deepest horizons examined, to peak values at the west and east coast sites of 117 +/0.6 pMC and 132 +/0.7 pMC, respectively (corresponding to maximal fallout from nuclear weapons testing around 1964), thereafter diminishing to levels of 110-113 pMC near the surface. Significantly, peak levels at the east coast site are considerably higher than corresponding levels at the west coast site, though both are lower than reported peak values for continental regions. The possibility of significant 14C enrichment at the east coast site due to past discharges from nuclear installations in the UK seems unlikely. The 210Pb(ex) inventory at the east coast site (6500 Bq m-2 is significantly higher than at the west coast (5300 Bq m-2) and is consistent with the difference in rainfall at the two sites. Finally, 137Cs and 241Am inventories at the east coast site also exceed those at the west coast site by similar proportions (east:west ratio of approximately 1:1.2).
    Type
    Proceedings
    text
    Language
    en
    ISSN
    0033-8222
    ae974a485f413a2113503eed53cd6c53
    10.1017/S0033822200041175
    Scopus Count
    Collections
    Radiocarbon, Volume 43, Number 2B (2001)

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