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Ancient biomolecules from deep ice cores reveal a forested southern Greenland.
Willerslev E, Cappellini E, Boomsma W, Nielsen R, Hebsgaard MB, Brand TB, Hofreiter M, Bunce M, Poinar HN, Dahl-Jensen D, Johnsen S, Steffensen JP, Bennike O, Schwenninger JL, Nathan R, Armitage S, de Hoog CJ, Alfimov V, Christl M, Beer J, Muscheler R, Barker J, Sharp M, Penkman KE, Haile J, Taberlet P, Gilbert MT, Casoli A, Campani E, Collins MJ. Willerslev E, et al. Among authors: christl m. Science. 2007 Jul 6;317(5834):111-4. doi: 10.1126/science.1141758. Science. 2007. PMID: 17615355 Free PMC article.
41Ca, 14C and 10Be concentrations in coral sand from the Bikini atoll.
Lachner J, Christl M, Alfimov V, Hajdas I, Kubik PW, Schulze-König T, Wacker L, Synal HA. Lachner J, et al. Among authors: christl m. J Environ Radioact. 2014 Mar;129:68-72. doi: 10.1016/j.jenvrad.2013.12.005. Epub 2013 Dec 28. J Environ Radioact. 2014. PMID: 24378732
9,400 years of cosmic radiation and solar activity from ice cores and tree rings.
Steinhilber F, Abreu JA, Beer J, Brunner I, Christl M, Fischer H, Heikkilä U, Kubik PW, Mann M, McCracken KG, Miller H, Miyahara H, Oerter H, Wilhelms F. Steinhilber F, et al. Among authors: christl m. Proc Natl Acad Sci U S A. 2012 Apr 17;109(16):5967-71. doi: 10.1073/pnas.1118965109. Epub 2012 Apr 2. Proc Natl Acad Sci U S A. 2012. PMID: 22474348 Free PMC article.
Multiradionuclide evidence for an extreme solar proton event around 2,610 B.P. (∼660 BC).
O'Hare P, Mekhaldi F, Adolphi F, Raisbeck G, Aldahan A, Anderberg E, Beer J, Christl M, Fahrni S, Synal HA, Park J, Possnert G, Southon J, Bard E; ASTER Team; Muscheler R. O'Hare P, et al. Among authors: christl m. Proc Natl Acad Sci U S A. 2019 Mar 26;116(13):5961-5966. doi: 10.1073/pnas.1815725116. Epub 2019 Mar 11. Proc Natl Acad Sci U S A. 2019. PMID: 30858311 Free PMC article.
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. Among authors: christl m. Nat Commun. 2022 Mar 7;13(1):1196. doi: 10.1038/s41467-022-28804-9. Nat Commun. 2022. PMID: 35256613 Free PMC article.
Isotopic signature of plutonium at Bikini atoll.
Lachner J, Christl M, Bisinger T, Michel R, Synal HA. Lachner J, et al. Among authors: christl m. Appl Radiat Isot. 2010 Jun;68(6):979-83. doi: 10.1016/j.apradiso.2010.01.043. Epub 2010 Feb 4. Appl Radiat Isot. 2010. PMID: 20167504
63 results