文章基本信息

标题：10Be in the Akademii Nauk ice core – first results for CE 1590–1950 and implications for future chronology validation
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作者：LUISA VON ALBEDYLL ; THOMAS OPEL ; DIEDRICH FRITZSCHE 等
期刊名称：Journal of Glaciology
印刷版ISSN：0022-1430
电子版ISSN：1727-5652
出版年度：2017
卷号：63
期号：239
页码：514-522
DOI：10.1017/jog.2017.19
出版社：Cambridge University Press
摘要：ABSTRACT Temporal variations of the radionuclide 10 Be are broadly synchronous across the globe and thus provide a powerful tool to synchronize ice core chronologies from different locations. We compared the 10 Be record of the Akademii Nauk (AN) ice core (Russian Arctic) for the time period CE 1590–1950 to the 10 Be records of two well-dated Greenland ice cores (Dye3 and NGRIP). A high correlation ( r = 0.59) was found between the AN and Dye3 records whereas the correlation with NGRIP was distinctly lower ( r = 0.45). Sources of deviations may include local fluctuations in the deposition of 10 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.
关键词：accelerator mass spectrometry;Arctic glaciology;ice chronology/dating;ice core