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Tree-rings reveal t...
Tree-rings reveal two strong solar proton events in 7176 and 5259 BCE
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- Brehm, Nicolas (författare)
- ETH Zürich
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- Christl, Marcus (författare)
- ETH Zürich
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- Knowles, Timothy D.J. (författare)
- University of Bristol
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- Casanova, Emmanuelle (författare)
- University of Bristol
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- Evershed, Richard P. (författare)
- University of Bristol
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- Adolphi, Florian (författare)
- Alfred-Wegener Institute, Helmholtz Center for Polar and Marine Research, Bremerhaven
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- Muscheler, Raimund (författare)
- Lund University,Lunds universitet,MERGE: ModElling the Regional and Global Earth system,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Kvartärgeologi,Geologiska institutionen,Centre for Environmental and Climate Science (CEC),Faculty of Science,Quaternary Sciences,Department of Geology
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- Synal, Hans Arno (författare)
- ETH Zürich
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- Mekhaldi, Florian (författare)
- Lund University,Lunds universitet,MERGE: ModElling the Regional and Global Earth system,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Kvartärgeologi,Geologiska institutionen,Centre for Environmental and Climate Science (CEC),Faculty of Science,Quaternary Sciences,Department of Geology,British Antarctic Survey
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- Paleari, Chiara I. (författare)
- Lund University,Lunds universitet,MERGE: ModElling the Regional and Global Earth system,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Kvartärgeologi,Geologiska institutionen,Centre for Environmental and Climate Science (CEC),Faculty of Science,Quaternary Sciences,Department of Geology
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- Leuschner, Hanns Hubert (författare)
- University of Göttingen
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- Bayliss, Alex (författare)
- Historic England
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- Nicolussi, Kurt (författare)
- University of Innsbruck
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- Pichler, Thomas (författare)
- University of Innsbruck
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- Schlüchter, Christian (författare)
- University of Bern
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- Pearson, Charlotte L. (författare)
- University of Arizona
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- Salzer, Matthew W. (författare)
- University of Arizona
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- Fonti, Patrick (författare)
- Swiss Federal Institute for Forest, Snow and Landscape Research
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- Nievergelt, Daniel (författare)
- Swiss Federal Institute for Forest, Snow and Landscape Research
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- Hantemirov, Rashit (författare)
- Institute Of Plant And Animal Ecology Ural Branch Of Russian Academy Of Sciences,Ural Federal University
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- Brown, David M. (författare)
- Queen's University Belfast
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- Usoskin, Ilya (författare)
- University of Oulu
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- Wacker, Lukas (författare)
- ETH Zürich
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(creator_code:org_t)
- 2022-03-07
- 2022
- Engelska.
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Ingår i: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 13:1
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://www.nature.c...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The Sun sporadically produces eruptive events leading to intense fluxes of solar energetic particles (SEPs) that dramatically disrupt the near-Earth radiation environment. Such events have been directly studied for the last decades but little is known about the occurrence and magnitude of rare, extreme SEP events. Presently, a few events that produced measurable signals in cosmogenic radionuclides such as 14C, 10Be and 36Cl have been found. Analyzing annual 14C concentrations in tree-rings from Switzerland, Germany, Ireland, Russia, and the USA we discovered two spikes in atmospheric 14C occurring in 7176 and 5259 BCE. The ~2% increases of atmospheric 14C recorded for both events exceed all previously known 14C peaks but after correction for the geomagnetic field, they are comparable to the largest event of this type discovered so far at 775 CE. These strong events serve as accurate time markers for the synchronization with floating tree-ring and ice core records and provide critical information on the previous occurrence of extreme solar events which may threaten modern infrastructure.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Multidisciplinär geovetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geosciences, Multidisciplinary (hsv//eng)
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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Brehm, Nicolas
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Christl, Marcus
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Knowles, Timothy ...
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Casanova, Emmanu ...
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Evershed, Richar ...
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Adolphi, Florian
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Muscheler, Raimu ...
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Synal, Hans Arno
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Mekhaldi, Floria ...
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Paleari, Chiara ...
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Leuschner, Hanns ...
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Bayliss, Alex
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Nicolussi, Kurt
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Pichler, Thomas
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Schlüchter, Chri ...
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Pearson, Charlot ...
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Salzer, Matthew ...
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Fonti, Patrick
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Nievergelt, Dani ...
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Hantemirov, Rash ...
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Brown, David M.
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Usoskin, Ilya
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Wacker, Lukas
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