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

被引：39

作者：

McCormac, FG ^{[1
]}

Hogg, AG

Higham, TFG

Baillie, MGL

Palmer, JG

Xiong, LM

Pilcher, JR

Brown, D

Hoper, ST

机构：

[1] Queens Univ Belfast, Sch Geosci, Belfast BT7 1NN, Antrim, North Ireland

[2] Univ Waikato, Radiocarbon Dating Lab, Hamilton, New Zealand

[3] Lincoln Univ, Dept Plant Sci, Lincoln, New Zealand

来源：

RADIOCARBON | 1998年 / 40卷 / 03期

关键词：

D O I：

10.1017/S0033822200019184

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The Queen's University of Belfast, Northern Ireland and University of Waikato, 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 Britain and New Zealand, respectively. The results show a real atmospheric offset of 3.4 +/- 0.6 parts per thousand (27.2 +/- 4.7 C-14 yr) between the two locations for the interval AD 1725 to AD 1885, with the Southern Hemisphere being depleted in C-14. This result is less than the value currently used to correct Southern Hemisphere calibrations, possibly indicating a gradient in Delta(14)C within the Southern Hemisphere.

引用

页码：1153 / 1159

页数：7

共 30 条

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