Тип публикации: статья из журнала

Год издания: 2024

Идентификатор DOI: 10.1038/s43247-024-01618-x

Аннотация: Extreme solar energetic particle events, known as Miyake events, are rare phenomena observed by cosmogenic isotopes, with only six documented. The timing of the ca. 660 BCE Miyake event remains undefined until now. Here, we assign its occurrence to 664–663 BCE through new radiocarbon measurements in gymnosperm larch tree rings fromПоказать полностьюarctic-alpine biomes (Yamal and Altai). Using a 22-box carbon cycle model and Bayesian statistics, we calculate the radiocarbon production rate during the event that is 3.2–4.8 times higher than the average solar modulation, and comparable to the 774–775 CE solar-proton event. The prolonged radiocarbon signature manifests a 12‰ rise over two years. The non-uniform signal in the tree rings is likely driven by the low rate of CO2 gas exchange between the trees and the ambient atmosphere, and the high residence time of radiocarbon in the post-event stratosphere. We caution about using the event's pronounced signature for precise single-year-dating. 14 C signature in tree rings of northern Eurasia with double-pulse cosmic radiation signal and unusual cosmogenic isotope production suggests the Miyake event of 660 BCE occurred between 664–663 BCE, according to 14 C dispersion data with new time series of gymnosperm larch from arctic-alpine biomes.

Журнал: Communications Earth and Environment

Выпуск журнала: Т. 5, № 1

Номера страниц: 454

ISSN журнала: 26624435

Издатель: Nature Publishing Group

• Panyushkina Irina P. (Laboratory of Tree-Ring Research, University of Arizona, Tucson, AZ, USA)
• Jull A. J. Timothy (Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Debrecen, Hungary)
• Molnár Mihaly (Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Debrecen, Hungary)
• Varga Tamás (Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Debrecen, Hungary)
• Kontul' Ivan (Department of Mathematics, Physics and Informatics, Comenius University, Bratislava, Slovakia)
• Hantemirov Rashit (Ural Federal University, Yekaterinburg, Russia)
• Kukarskih Vladymir (Ural Federal University, Yekaterinburg, Russia)
• Sljusarenko Igor (Institute of Archaeology and Ethnography SB RAS, Novosibirsk, Russia)
• Myglan Vladymir (School for the Humanities, Siberian Federal University, Krasnoyarsk, Russia)
• Livina Valerie (Data Science Department, National Physical Laboratory, Teddington, UK)

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