Natural Radiocarbon Variations from AD 200 to 800
- 1 January 1980
- journal article
- Published by Cambridge University Press (CUP) in Radiocarbon
- Vol. 22 (2), 273-277
- https://doi.org/10.1017/s0033822200009553
Abstract
High precision radiocarbon measurements (±2.5‰ STD) were carried out on absolutely dated European oak material. These showed that significant short-term atmospheric 14C variations of up to 2 percent occurred between AD 200 and 800. These changes, reflecting a 150-to 180-year periodicity, seem to correlate with the average sunspot activity around that time. In comparison with results obtained by other authors, a very regular pattern of natural atmospheric 14C variations is exhibited.Keywords
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