Radiocarbon Activity Variation in Dated Tree Rings Grown in Mackenzie Delta

We measured the Δ14C values in 57 rings (from AD 1824 to 1880) of a white spruce grown in Mackenzie Delta (68°N, 130°W), as part of our continuing study of the Δ14C variation related to solar activities. The values exhibit a 10‰ fluctuation with an 11-year periodicity anti-correlated with the solar...

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Bibliographic Details
Published in:Radiocarbon 1986, Vol.28 (2A), p.300-305
Main Authors: Fan, C Y, Tie-Mei, Chen, Si-Xun, Yun, Kai-Mei, Dai
Format: Article
Language:English
Subjects:
II. Natural Variations
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Summary:We measured the Δ14C values in 57 rings (from AD 1824 to 1880) of a white spruce grown in Mackenzie Delta (68°N, 130°W), as part of our continuing study of the Δ14C variation related to solar activities. The values exhibit a 10‰ fluctuation with an 11-year periodicity anti-correlated with the solar activity cycle. We also measured the Δ14C values in 6 rings (from AD 1940 to 1945). The abnormally high value in the 1943 ring may be due to two large solar flares occurring in 1942.
ISSN:0033-8222
1945-5755
DOI:10.1017/S0033822200007402