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Advanced filters: Author: Hanns-Hubert Leuschner Clear advanced filters

  • Two extreme solar energetic particle events have been found by carbon isotopes measured in ancient tree rings in 7176 and 5259 BCE. The recorded ~2% increases of atmospheric 14 C for both events exceeds in amplitude of all previously observed events.

    • Nicolas Brehm
    • Marcus Christl
    • Lukas Wacker
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-8