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Science 5 May 1967:
Vol. 156. no. 3775, pp. 640 - 642
DOI: 10.1126/science.156.3775.640
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Articles

Variation in Atmospheric Carbon-14 Activity Relative to a Sunspot-Auroral Solar Index

J. Roger Bray 1

1 Grasslands Division, Departmtzent of Scientific and Industrial Research Palmerston North, New Zealand

Radiocarbon activity was negatively correlated (Ple.01) with a sunspot-auroral index during 25 designated solar activity periods from 129 B.C. to A.D. 1964. Change in carbon-14 activity during these periods was inverse to change in solar activity in 22 of 24 instances (Ple.001). Contamination from carbon-14 formed during previous solar cycles mnay lessen the value of carbon-14 as a climate or solar index.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
The Maunder Minimum.
J. A. Eddy (1976)
Science 192, 1189-1202
   PDF »
Solar-Climate Relationships in the Post-Pleistocene.
J. R. Bray and J. R. Bray (1971)
Science 171, 1242-1243
   Abstract »    PDF »
Solar Activity Index: Validity Supported by Oxygen Isotope Dating.
J. R. Bray and J. R. Bray (1970)
Science 168, 571-572
   Abstract »    PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)