Mercury from sediment short core EN18232-1 of Lake Khamra, SW Yakutia, Siberia, Russia

• Main Authors: Stieg, Amelie, Biskaborn, Boris K, Herzschuh, Ulrike, Strauss, Jens, Lindemann, Justin, Meyer, Hanno
• Format: Dataset
• Language: English
• Published: PANGAEA 2024
• Subjects: Accumulation rate; mass; per year; AWI_Envi; AWI_Perma; AWI Arctic Land Expedition; Calculated; Calculation according to Biskaborn et al. 2023; Calculation according to Pfalz et al. (2022); Chukotka 2018; Density; dry bulk; DEPTH; sediment/rock; bottom/maximum; top/minimum; EN18232-1; Event label; GCUWI; Gravity corer; UWITEC; Lake Khamra; SW Yakutia; Russia; Lake sediment; Mercury; flux; Mercury analyser; MLS-MWS; DMA-80 evo III; Mercury concentration; Permafrost Research; Polar Terrestrial Environmental Systems @ AWI; Pristine lake; RU-Land_2018_Yakutia; Sample ID; Sedimentation rate per year; Siberia; Yakutia; Arctic; Chukotka; permafrost
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.962973

The datafile presents total mercury concentrations (THg, given in µg/kg) of all subsamples (n=39) of sedimentary short core EN18232-1. All measurements were carried out at the Permafrost Carbon and Nitrogen Lab (CarLa) at AWI Potsdam. Mercury concentrations were measured with a MLS-MWS DMA-80 evo III. The machine detection limit was 0.003 ng, with a laboratory proven limit of determination of 0.4 ng. Furthermore, we provide mercury fluxes (HgAr, µg/m²/a) according to the method described in detail in Biskaborn et al. (2023) using the equations in the Comment section below. The sedimentation rates (SR in cm/a) were calculated following Pfalz et al. (2022), whereby xi is the sample depth of interest and xi-1 its previous layer. We used the mean ages of the age-depth-model results of the shortcore EN18232-1. This is followed by the mass accumulation rate (MAR in g/cm²/a), where we used the mean value of the dry bulk density (DBD in g/cm³) of the short core EN18232-1. Consequently, we calculated the mercury accumulation rates HgAr in µg/m²/a.