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      Is there any Evidence for Regional Atmospheric 14C Offsets in the Southern Hemisphere?

      Hogg, Alan G.; Turney, Chris S.M.; Palmer, Jonathan G.; Cook, Ed; Buckley, Brendan
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      Is there.pdf
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      DOI
       10.2458/azu_js_rc.v55i2.16104
      Link
       journals.uair.arizona.edu
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      Hogg, A. G., Turney, C. S. M., Palmer, J. G., Cook, E. & Buckley, B. (2013). Is there any Evidence for Regional Atmospheric 14C Offsets in the Southern Hemisphere? Radiocarbon, 55(2), 1-6.
      Permanent Research Commons link: https://hdl.handle.net/10289/7663
      Abstract
      Center for Accelerator Mass Spectrometry (CAMS) Tasmanian huon pine (Lagarostrobos franklinii) decadal measurements for the interval AD 745–855 suggest a mean interhemispheric radiocarbon offset (20 ± 5 yr), which is considerably lower than the previously reported mean interhemispheric offset for the last 2 millennia (44 ± 17 yr). However, comparable University of Waikato (Wk) New Zealand kauri (Agathis australis) measurements show significantly higher values (56 ± 6 yr), suggesting the possibility of a temporary geographic (intrahemispheric) offset between Tasmania, Australia, and Northland, New Zealand, during at least 1 common time interval. Here, we report 9 new Wk Tasmanian huon pine measurements from the decades showing the largest huon/kauri difference. We show statistically indistinguishable Wk huon and Wk kauri 14C ages, thus dispelling the suggestion of a 14C geographic offset between Tasmania and Northland.
      Date
      2013
      Type
      Journal Article
      Publisher
      The University of Arizona
      Rights
      This article has been published in the journal: Radiocarbon. © 2013 by the Arizona Board of Regents on behalf of the University of Arizona. Used with permission.
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      • Science and Engineering Papers [3122]
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