TY - JOUR
T1 - A varved lake sediment record of the 10Be solar activity proxy for the Lateglacial-Holocene transition
AU - Czymzik, Markus
AU - Adolphi, Florian
AU - Muscheler, Raimund
AU - Mekhaldi, Florian
AU - Martin-Puertas, Celia
AU - Aldahan, Ala
AU - Possnert, Göran
AU - Brauer, Achim
N1 - Funding Information:
MC was funded by a German Science Foundation postdoc grant (DFG grant CZ 227/1-1 ) and the Swedish Research Council (VR grant to RM: Dnr: 2013-8421 ). Further financial support was provided through a travel grant from the EU COST action ES0907 INTIMATE, an endowment from the Royal Physiographic Society in Lund and a Linnaeus grant to Lund University . We would like to thank Inger Påhlsson for the extraction of 10 Be from sediment samples and Oliver Rach for measuring TOC contents. 10 Be data are available at the PANGAEA data library. We thank two anonymous reviewers for their constructive comments.
Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2016/12/1
Y1 - 2016/12/1
N2 - Solar modulated variations in cosmogenic radionuclide production provide both information on past changes in the activity of the Sun and a global synchronization tool. However, to date the use of cosmogenic radionuclides for these applications is almost exclusively based on 10Be records from ice cores and 14C time-series from tree rings, all including archive-specific limitations. We present the first 10Be record from annually laminated (varved) lake sediments for the Lateglacial-Holocene transition from Meerfelder Maar. We quantify environmental influences on the catchment and, consequently, 10Be deposition using a new approach based on regression analyses between our 10Be record and environmental proxy time-series from the same archive. Our analyses suggest that environmental influences contribute to up to 37% of the variability in our 10Be record, but cannot be the main explanation for major 10Be excursions. Corrected for these environmental influences, our 10Be record is interpreted to dominantly reflect changes in solar modulated cosmogenic radionuclide production. The preservation of a solar production signal in 10Be from varved lake sediments highlights the largely unexplored potential of these archives for solar activity reconstruction, as global synchronization tool and, thus, for more robust paleoclimate studies.
AB - Solar modulated variations in cosmogenic radionuclide production provide both information on past changes in the activity of the Sun and a global synchronization tool. However, to date the use of cosmogenic radionuclides for these applications is almost exclusively based on 10Be records from ice cores and 14C time-series from tree rings, all including archive-specific limitations. We present the first 10Be record from annually laminated (varved) lake sediments for the Lateglacial-Holocene transition from Meerfelder Maar. We quantify environmental influences on the catchment and, consequently, 10Be deposition using a new approach based on regression analyses between our 10Be record and environmental proxy time-series from the same archive. Our analyses suggest that environmental influences contribute to up to 37% of the variability in our 10Be record, but cannot be the main explanation for major 10Be excursions. Corrected for these environmental influences, our 10Be record is interpreted to dominantly reflect changes in solar modulated cosmogenic radionuclide production. The preservation of a solar production signal in 10Be from varved lake sediments highlights the largely unexplored potential of these archives for solar activity reconstruction, as global synchronization tool and, thus, for more robust paleoclimate studies.
KW - Be
KW - Solar activity
KW - Time-scales
KW - Varved lake sediments
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U2 - 10.1016/j.quascirev.2016.10.007
DO - 10.1016/j.quascirev.2016.10.007
M3 - Article
AN - SCOPUS:84992751332
SN - 0277-3791
VL - 153
SP - 31
EP - 39
JO - Quaternary Science Reviews
JF - Quaternary Science Reviews
ER -