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| Titel |
Atmospheric production signal in 10Be from varved sediments of Lake Meerfelder Maar during the late glacial-early Holocene transition |
| VerfasserIn |
Markus Czymzik, Florian Adolphi, Raimund Muscheler, Achim Brauer, Florian Mekhaldi, Celia Martin-Puertas, Rik Tjallingii, Ala Aldahan, Göran Possnert |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250133156
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| Publikation (Nr.) |
 EGU/EGU2016-13734.pdf |
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| Zusammenfassung |
| Beryllium 10 concentrations (10Becon) were measured at 20-year resolution in
annually laminated (varved) sediments of Lake Meerfelder Maar (western Germany)
covering the late glacial-early Holocene transition 11310-13130 varve years before
present. Comparing the 10Becon record to environmental proxy records from the same
archive indicates that varying sediment accumulation and composition only slightly
modify trends, but do not substantially influence multi-decadal to centennial 10Becon
excursions. Corrected for potential environmental biases using multiple-regression
analysis, the resulting 10Beatmosphere time-series likely represents an alternative
mid-latitude 10Be production record, exhibiting broad similarities but also some
differences to radionuclide records as 14C in tree rings and 10Be in polar ice cores. The
preservation of the globally common atmospheric production signal in 10Be from
varved lake sediments indicates the, to date, largely unexplored potential of these
archives for the synchronization to other radionuclide records around the globe,
complementing existing solar activity reconstructions and Sun-climate studies. |
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