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Tree-rings reveal two strong solar proton events in 7176 and 5259 BCE.
Brehm N, Christl M, Knowles TDJ, Casanova E, Evershed RP, Adolphi F, Muscheler R, Synal HA, Mekhaldi F, Paleari CI, Leuschner HH, Bayliss A, Nicolussi K, Pichler T, Schlüchter C, Pearson CL, Salzer MW, Fonti P, Nievergelt D, Hantemirov R, Brown DM, Usoskin I, Wacker L. Brehm N, et al. Nat Commun. 2022 Mar 7;13(1):1196. doi: 10.1038/s41467-022-28804-9. Nat Commun. 2022. PMID: 35256613 Free PMC article.
A Single-Year Cosmic Ray Event at 5410 BCE Registered in 14C of Tree Rings.
Miyake F, Panyushkina IP, Jull AJT, Adolphi F, Brehm N, Helama S, Kanzawa K, Moriya T, Muscheler R, Nicolussi K, Oinonen M, Salzer M, Takeyama M, Tokanai F, Wacker L. Miyake F, et al. Among authors: brehm n. Geophys Res Lett. 2021 Jun 16;48(11):e2021GL093419. doi: 10.1029/2021GL093419. Epub 2021 Jun 9. Geophys Res Lett. 2021. PMID: 34433990 Free PMC article.
Rapid 14C excursion at 3372-3371 BCE not observed at two different locations.
Timothy Jull AJ, Panyushkina IP, Molnár M, Varga T, Wacker L, Brehm N, Laszló E, Baisan C, Salzer MW, Tegel W. Timothy Jull AJ, et al. Among authors: brehm n. Nat Commun. 2021 Jan 29;12(1):712. doi: 10.1038/s41467-020-20695-y. Nat Commun. 2021. PMID: 33514715 Free PMC article. No abstract available.
27 results