| 词条 | 993–994 carbon-14 spike |
| 释义 |
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
References1. ^{{cite journal |url=http://www.nature.com/articles/ncomms2783 |title=Another rapid event in the carbon-14 content of tree rings : Nature Communications : Nature Publishing Group |journal=Nature Communications |volume=4 |pages=1748 |date=2013 |author= Miyake, F. |display-authors=etal|doi=10.1038/ncomms2783 |pmid=23612289 }} {{Solar storms}}{{DEFAULTSORT:993-994 carbon-14 spike}}{{astronomy-stub}}{{environment-stub}}2. ^{{cite journal |url=http://www.nature.com/articles/ncomms9611 |title=Multiradionuclide evidence for the solar origin of the cosmic-ray events of ᴀᴅ 774/5 and 993/4 : Nature Communications : Nature Publishing Group |journal=Nature Communications |volume=6 |pages=8611 |date=2015 |author= Mekhaldi, F. |display-authors=etal|doi=10.1038/ncomms9611 |pmid=26497389 |pmc=4639793 }} 3. ^{{cite journal |title=Historical Auroras in the 990s: Evidence of Great Magnetic Storms : Solar Physics : Springer |journal = Solar Physics|volume = 292|date=2017 |author= Hayakawa, H. |display-authors=etal|doi=10.1007/s11207-016-1039-2 |arxiv = 1612.01106}} 5 : Geomagnetic storms|Dendrology|Stratigraphy|993|994 |
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