Multiradionuclide evidence for an extreme solar proton event around 2,610 B.P. (∼660 BC)

作者：Paschal O’Hare, Florian Mekhaldi, Florian Adolphi, G. M. Raisbeck, Ala Aldahan, Emma Anderberg, Jürg Beer, Marcus Christl, Simon Fahrni, Hans‐Arno Synal, Junghun Park, Göran Possnert, John Southon, Édouard Bard, ASTER Team, Raimund Muscheler, Georges Aumaître, Didier Bourlès, Karim Keddadouche · 发表于：Proceedings of the National Academy of Sciences · 年份：2019 · DOI：10.1073/pnas.1815725116 · 被引用次数：113 · 研究领域：Astro and Planetary Science、Geology and Paleoclimatology Research、Archaeology and ancient environmental studies

Significance This study provides evidence of an enormous solar storm around 2,610 B.P. It is only the third such event reliably documented and is comparable with the strongest event detected at AD 774/775. The event of 2,610 years B.P. stands out because of its particular signature in the radionuclide data [i.e., carbon-14 ( 14 C) data alone does not allow for an unequivocal detection of the event]. It illustrates that present efforts to find such events based solely on 14 C data likely lead to an underestimated number of such potentially devastating events for our society. In addition to 14 C data, high-resolution records of beryllium-10 and chlorine-36 are crucial for reliable estimates of the occurrence rate and the properties of past solar proton events.