Abstract
AbstractCosmic rays interact with the Earth’s atmosphere to produce 14C, which can be absorbed by trees. Therefore, rapid increases of 14C in tree rings can be used to probe previous cosmic-ray events. By this method, three 14C rapidly increasing events have been found. Plausible causes of these events include large solar proton events, supernovae, or short gamma-ray bursts. However, due to the lack of measurements of 14C by year, the occurrence frequency of such 14C rapidly increasing events is poorly known. In addition, rapid increases may be hidden in the IntCal13 data with five-year resolution. Here we report the result of 14C measurements using an ancient buried tree during the period between bc 3388 and 3358. We found a rapid increase of about 9‰ in the 14C content from bc 3372 to bc 3371. We suggest that this event could originate from a large solar proton event.
Publisher
Springer Science and Business Media LLC
Subject
General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry
Reference45 articles.
1. Damon, P. E., Kaimei, D., Kocharov, G. E., Mikheeva, I. B. & Peristykh, A. N. Radiocarbon production by the gamma-ray component of supernova explosions. Radiocarbon
37, 599–604 (1995).
2. Damon, P. E. & Peristykh, A. N. Radiocarbon calibration and application to geophysics, solar physics, and astrophysics. Radiocarbon
42, 137–150 (2000).
3. Usoskin, I. G., Solanki, S. K., Kovaltsov, G. A., Beer, J. & Kromer, B. Solar proton events in cosmogenic isotope data. Geophys. Res. Lett.
33, 153–172 (2006).
4. Reimer, P. J. et al. IntCal13 and Marine13 radiocarbon age calibration curves, 0–50,000 years cal BP. Radiocarbon
55, 1869–1887 (2013).
5. Ackermann, M. et al. Detection of the characteristic pion-decay signature in supernova remnants. Science
339, 807–811 (2013).
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