The Influence of Calibration Curve Construction and Composition on the Accuracy and Precision of Radiocarbon Wiggle-Matching of Tree Rings, Illustrated by Southern Hemisphere Atmospheric Data Sets from AD 1500–1950

Hogg, AG; Heaton, TJ; Ramsey, CB; Boswijk, G; Palmer, JG; Turney, CSM; Southon, J; Gumbley, W

The Influence of Calibration Curve Construction and Composition on the Accuracy and Precision of Radiocarbon Wiggle-Matching of Tree Rings, Illustrated by Southern Hemisphere Atmospheric Data Sets from AD 1500–1950

Hogg, AG Heaton, TJ Ramsey, CB Boswijk, G Palmer, JG Turney, CSM Southon, J Gumbley, W

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Publisher:: Cambridge University Press (CUP)
Publication Type:: Journal Article
Citation:: Radiocarbon, 2019, 61, (5), pp. 1265-1291
Issue Date:: 2019-05-28

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Field	Value	Language
dc.contributor.author	Hogg, AG
dc.contributor.author	Heaton, TJ
dc.contributor.author	Ramsey, CB
dc.contributor.author	Boswijk, G
dc.contributor.author	Palmer, JG
dc.contributor.author	Turney, CSM
dc.contributor.author	Southon, J
dc.contributor.author	Gumbley, W
dc.date.accessioned	2022-09-27T06:05:42Z
dc.date.available	2022-09-27T06:05:42Z
dc.date.issued	2019-05-28
dc.identifier.citation	Radiocarbon, 2019, 61, (5), pp. 1265-1291
dc.identifier.issn	0033-8222
dc.identifier.issn	1945-5755
dc.identifier.uri	http://hdl.handle.net/10453/162143
dc.description.abstract	<jats:title>ABSTRACT</jats:title><jats:p>This research investigates two factors influencing the ability of tree-ring data to provide accurate <jats:sup>14</jats:sup>C calibration information: the fitness and rigor of the statistical model used to combine the data into a curve; and the accuracy, precision and reproducibility of the component <jats:sup>14</jats:sup>C data sets. It presents a new Bayesian spline method for calibration curve construction and tests it on extant and new Southern Hemisphere (SH) data sets (also examining their dendrochronology and pretreatment) for the post-Little Ice Age (LIA) interval AD 1500–1950. The new method of construction allows calculation of component data offsets, permitting identification of laboratory and geographic biases. Application of the new method to the 10 suitable SH <jats:sup>14</jats:sup>C data sets suggests that individual offset ranges for component data sets appear to be in the region of ± 10 yr. Data sets with individual offsets larger than this need to be carefully assessed before selection for calibration purposes. We identify a potential geographical offset associated with the Southern Ocean (high latitude) Campbell Island data. We test the new methodology for wiggle-matching short tree-ring sequences and use an OxCal simulation to assess the likely precision obtainable by wiggle-matching in the post-LIA interval.</jats:p>
dc.language	en
dc.publisher	Cambridge University Press (CUP)
dc.relation.ispartof	Radiocarbon
dc.relation.isbasedon	10.1017/rdc.2019.42
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0402 Geochemistry, 0406 Physical Geography and Environmental Geoscience, 2101 Archaeology
dc.subject.classification	Paleontology
dc.title	The Influence of Calibration Curve Construction and Composition on the Accuracy and Precision of Radiocarbon Wiggle-Matching of Tree Rings, Illustrated by Southern Hemisphere Atmospheric Data Sets from AD 1500–1950
dc.type	Journal Article
utslib.citation.volume	61
utslib.for	0402 Geochemistry
utslib.for	0406 Physical Geography and Environmental Geoscience
utslib.for	2101 Archaeology
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/DVC (Research)
utslib.copyright.status	closed_access	*
dc.date.updated	2022-09-27T06:05:38Z
pubs.issue	5
pubs.publication-status	Published
pubs.volume	61
utslib.citation.issue	5

Abstract:

ABSTRACTThis research investigates two factors influencing the ability of tree-ring data to provide accurate 14C calibration information: the fitness and rigor of the statistical model used to combine the data into a curve; and the accuracy, precision and reproducibility of the component 14C data sets. It presents a new Bayesian spline method for calibration curve construction and tests it on extant and new Southern Hemisphere (SH) data sets (also examining their dendrochronology and pretreatment) for the post-Little Ice Age (LIA) interval AD 1500–1950. The new method of construction allows calculation of component data offsets, permitting identification of laboratory and geographic biases. Application of the new method to the 10 suitable SH 14C data sets suggests that individual offset ranges for component data sets appear to be in the region of ± 10 yr. Data sets with individual offsets larger than this need to be carefully assessed before selection for calibration purposes. We identify a potential geographical offset associated with the Southern Ocean (high latitude) Campbell Island data. We test the new methodology for wiggle-matching short tree-ring sequences and use an OxCal simulation to assess the likely precision obtainable by wiggle-matching in the post-LIA interval.

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http://hdl.handle.net/10453/162143