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dc.contributor.authorHogg, Alan G.
dc.contributor.authorPalmer, Jonathan G.
dc.contributor.authorBoswijk, Gretel
dc.contributor.authorReimer, Paula J.
dc.contributor.authorBrown, David
dc.date.accessioned2010-02-18T20:47:14Z
dc.date.available2010-02-18T20:47:14Z
dc.date.issued2009
dc.identifier.citationHogg, A., Palmer, J., Boswijk, G., Reimer, P. & Brown, D. (2009). Investigating the interhemispheric ¹⁴C offset in the 1st millennium AD and assessment of laboratory bias and calibration errors. Radiocarbon, 51(4), 1177-1186.en
dc.identifier.urihttps://hdl.handle.net/10289/3621
dc.description.abstractPast measurements of the radiocarbon interhemispheric offset have been restricted to relatively young samples because of a lack of older dendrochronologically secure Southern Hemisphere tree-ring chronologies. The Southern Hemisphere calibration data set SHCal04 earlier than AD 950 utilizes a variable interhemispheric offset derived from measured 2nd millennium AD Southern Hemisphere/Northern Hemisphere sample pairs with the assumption of stable Holocene ocean/atmosphere interactions. This study extends the range of measured interhemispheric offset values with 20 decadal New Zealand kauri and Irish oak sample pairs from 3 selected time intervals in the 1st millennium AD and is part of a larger program to obtain high-precision Southern Hemisphere 14C data continuously back to 200 BC. We found an average interhemispheric offset of 35 ± 6 yr, which although consistent with previously published 2nd millennium AD measurements, is lower than the offset of 55–58 yr utilized in SHCal04. We concur with McCormac et al. (2008) that the IntCal04 measurement for AD 775 may indeed be slightly too old but also suggest the McCormac results appear excessively young for the interval AD 755–785. In addition, we raise the issue of laboratory bias and calibration errors, and encourage all laboratories to check their consistency with appropriate calibration curves and invest more effort into improving the accuracy of those curves.en
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherArizona Board of Regents on behalf of the University of Arizonaen_NZ
dc.relation.urihttp://www.radiocarbon.org/en
dc.rightsThis article has been published in the journal: Radiocarbon. © 2009 the Arizona Board of Regents on behalf of the University of Arizona. Used with permission.en
dc.subjectradiocarbonen
dc.subjectADen
dc.titleInvestigating the interhemispheric ¹⁴C offset in the 1st millennium AD and assessment of laboratory bias and calibration errorsen
dc.typeConference Contributionen
dc.identifier.doi10.1017/S0033822200034238en_NZ
dc.relation.isPartOfRadiocarbonen_NZ
pubs.begin-page1177en_NZ
pubs.elements-id34645
pubs.end-page1186en_NZ
pubs.issue4en_NZ
pubs.volume51en_NZ


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