Astronomy:993–994 carbon-14 spike

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The 993–994 carbon-14 spike was a rapid increase in carbon-14 content from tree rings, and followed the 774–775 carbon-14 spike.[1] This event is also confirmed by a sharp increase of beryllium-10 and hence considered as solar-origin. [2] It may have come from a massive solar storm as a series of auroral observations are known to be observed in late 992. [3]

See also

References

  1. Miyake, F. (2013). "Another rapid event in the carbon-14 content of tree rings : Nature Communications : Nature Publishing Group". Nature Communications 4: 1748. doi:10.1038/ncomms2783. PMID 23612289. 
  2. Mekhaldi, F. (2015). "Multiradionuclide evidence for the solar origin of the cosmic-ray events of ᴀᴅ 774/5 and 993/4 : Nature Communications : Nature Publishing Group". Nature Communications 6: 8611. doi:10.1038/ncomms9611. PMID 26497389. 
  3. Hayakawa, H. (2017). "Historical Auroras in the 990s: Evidence of Great Magnetic Storms : Solar Physics : Springer". Solar Physics 292. doi:10.1007/s11207-016-1039-2. 





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