Mercury from sediment core EN18218, Lake Rauchuagytgyn, expedition to Chukotka 2018, Russian Arctic


These dataset contains multi proxy data from sediment core EN18218 obtained from Arctic glacial lake Rauchuagytgyn (67.7922°N, 168.7312°E) by piston coring during the Chukotka 2018 expedition (Siberia). We provide original count data of diatom species from 53 samples along a ca. 5.5 m interval in the sediment core, next to nitrogen and mercury concentrations. The data are complementary to the sedimentological and radiocarbon data published in an earlier data set by Vyse et al. 2021. The data sets provides, calculated from the original data, estimated accumulation rates based on a revised age model explained in the manuscript for diatom valves (diatom accumulation rate, DAR), organic carbon (organic carbon accumulation rates, OCAR), and mercury (Hg accumulation rates, HgAR).

We determined the THg in solid material by thermal decomposition, amalgamation and atomic absorption spectrophotometry using a Direct Mercury Analyzer (DMA-80 evo; MLS-MWS GmbH).

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Metadata Access
Creator Biskaborn, Boris K (Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam); Forster, Amy; Pfalz, Gregor (Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam)
Publisher PANGAEA
Publication Year 2023
Funding Reference European Research Council, 772852
Rights Data access is restricted (moratorium, sensitive data, license constraints)
OpenAccess false
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 31 data points
Discipline Earth System Research
Spatial Coverage (168.734 LON, 67.789 LAT)