10Be in the Akademii Nauk ice core – first results for CE 1590–1950 and implications for future chronology validation
<jats:title>ABSTRACT</jats:title><jats:p>Temporal variations of the radionuclide <jats:sup>10</jats:sup>Be are broadly synchronous across the globe and thus provide a powerful tool to synchronize ice core chronologies from different locations. We compared the <jats:sup>10</jats:sup>Be record of the Akademii Nauk (AN) ice core (Russian Arctic) for the time period CE 1590–1950 to the <jats:sup>10</jats:sup>Be records of two well-dated Greenland ice cores (Dye3 and NGRIP). A high correlation (<jats:italic>r</jats:italic> = 0.59) was found between the AN and Dye3 records whereas the correlation with NGRIP was distinctly lower (<jats:italic>r</jats:italic> = 0.45). Sources of deviations may include local fluctuations in the deposition of <jats:sup>10</jats:sup>Be due to changes in the precipitation patterns, and artefacts due to the core-sampling strategy. In general, the existing age model was validated, confirming the AN ice core to be a unique and well-dated source of palaeoclimate parameters for the Russian Arctic. We further used numerical simulations to test the influence of the core-sampling strategy on the results and derived an optimized sampling strategy for the deeper parts of the ice core.</jats:p>
AWI Organizations > Climate Sciences > Junior Research Group: ECUS
10be_in_the_akademii_nauk_ice_core_first_results_for_ce_15901950_and_implications_for_future_chronology_validation.pdf
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