Variations of radiocarbon in tree rings: Southern Hemisphere offset preliminary results

Authors
McCormac, FG Hogg, AG Higham, TFG Baillie, MGL Palmer, JG Xiong, LM Pilcher, JR Brown, D Hoper, ST
Citation
Fg. Mccormac et al., Variations of radiocarbon in tree rings: Southern Hemisphere offset preliminary results, RADIOCARBON, 40(3), 1998, pp. 1153-1159
Citations number
30
Categorie Soggetti
Earth Sciences
Journal title
RADIOCARBON
ISSN journal
00338222 → ACNP
Volume
40
Issue
3
Year of publication
1998
Pages
1153 - 1159
Database
ISI
SICI code
0033-8222(1998)40:3<1153:VORITR>2.0.ZU;2-N
Abstract
The Queen's University of Belfast, Northern Ireland and University of Waika to, Hamilton, New Zealand radiocarbon laboratories have undertaken a series of high-precision measurements on decadal samples of dendrochronologically dated oak (Quercus patrea) and cedar (Libocedrus bidwillii) from Great Bri tain and New Zealand, respectively. The results show a real atmospheric off set of 3.4 +/- 0.6 parts per thousand (27.2 +/- 4.7 C-14 yr) between the tw o locations for the interval AD 1725 to AD 1885, with the Southern Hemisphe re being depleted in C-14. This result is less than the value currently use d to correct Southern Hemisphere calibrations, possibly indicating a gradie nt in Delta(14)C within the Southern Hemisphere.