Ice-core cosmogenic radionuclides support the occurrence of an extreme solar particle storm 5259 BCE (7208 years BP)
Abstract
A prominent rapid increase in radiocarbon from tree rings has been detected in 5259 BCE (7208 years BP). In this study, we present 10Be and 36Cl data from the NGRIP and the GRIP ice cores from Greenland, and the EDML ice core from Antarctica around the 14C excursion. The ice-core radionuclide data show an increase consistent with the occurrence of an extreme solar energetic particle (SEP) event. The 10Be data show the event was of a similar magnitude as the extreme SEP event of 7176 BCE (9125 years BP), in agreement with previously published 14C data. Using all ice-core radionuclide data, we show that the event was characterized by a fluence above 200 MeV comparable with that of other extreme SEP events detected in radionuclide records. In addition, the detection of the SEP event in both tree-ring and ice-core records provides an important time-marker to synchronize the ice-core and tree-ring chronologies. This article is part of the Theo Murphy meeting issue 'Radiocarbon and cosmic radiation events'.
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BibTeX
@article{paleari2026icecore,
title = {{Ice-core cosmogenic radionuclides support the occurrence of an extreme solar particle storm 5259 BCE (7208 years BP)}},
author = {Chiara I Paleari and Florian Mekhaldi and Marcus Christl and Philip Gautschi and Christof Vockenhuber and Emma Anderberg and Jürg Beer and Grant Raisbeck and Francoise Yiou and Nicholas Brehm and Lukas Wacker and Frank Wilhelms and Raimund Muscheler},
journal = {Phil.Trans.Roy.Soc.Lond.A},
year = {2026},
month = sep,
doi = {10.1098/rsta.2025.0347},
url = {https://hal.science/hal-05762862v1},
note = {CC BY},
}
RIS
TY - JOUR
TI - Ice-core cosmogenic radionuclides support the occurrence of an extreme solar particle storm 5259 BCE (7208 years BP)
AU - Chiara I Paleari
AU - Florian Mekhaldi
AU - Marcus Christl
AU - Philip Gautschi
AU - Christof Vockenhuber
AU - Emma Anderberg
AU - Jürg Beer
AU - Grant Raisbeck
AU - Francoise Yiou
AU - Nicholas Brehm
AU - Lukas Wacker
AU - Frank Wilhelms
AU - Raimund Muscheler
PY - 2026
DA - 2026/09/24
JO - Phil.Trans.Roy.Soc.Lond.A
DO - 10.1098/rsta.2025.0347
UR - https://hal.science/hal-05762862v1
AB - A prominent rapid increase in radiocarbon from tree rings has been detected in 5259 BCE (7208 years BP). In this study, we present 10Be and 36Cl data from the NGRIP and the GRIP ice cores from Greenland, and the EDML ice core from Antarctica around the 14C excursion. The ice-core radionuclide data show an increase consistent with the occurrence of an extreme solar energetic particle (SEP) event. The 10Be data show the event was of a similar magnitude as the extreme SEP event of 7176 BCE (9125 years BP), in agreement with previously published 14C data. Using all ice-core radionuclide data, we show that the event was characterized by a fluence above 200 MeV comparable with that of other extreme SEP events detected in radionuclide records. In addition, the detection of the SEP event in both tree-ring and ice-core records provides an important time-marker to synchronize the ice-core and tree-ring chronologies. This article is part of the Theo Murphy meeting issue 'Radiocarbon and cosmic radiation events'.
ER -