XRF, grain size, and biogeochemical characteristics of a sediment core from Lake Malaya Chabyda, Central Yakutia ...

• Main Authors: Biskaborn, Boris K, Hughes-Allen, Lara, Bouchard, Frédéric, Hatte, Christine, Pestryakova, Luidmila A, Diekmann, Bernhard, Subetto, Dmitry A, Meyer, Hanno
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2021
• Subjects: Holocene; Lake sediment core; Late Pleistocene; organic carbon; Paleolimnology; Siberian permafrost; stable carbon isotopes δ13C; Composite Core; RU-Land_2013_Yakutia; AWI Arctic Land Expedition; Polar Terrestrial Environmental Systems @ AWI AWI_Envi; Arctic; Chabyda; Yakutsk; Alfred Wegener Institute; Ice; permafrost; Yakutia
• Online Access: https://dx.doi.org/10.1594/pangaea.933411; https://doi.pangaea.de/10.1594/PANGAEA.933411

Eight overlapping sediment cores, representing an approximately 6.6 m–long composite sequence, were collected on March 24, 2013 from Lake Malaya Chabyda in Central Yakutia (exact coring location 61°57.509' 129°24.500'). Sampling was conducted during a German–Russian Expedition (“Yakutia 2013”) as a cooperation between the North Eastern Federal State University in Yakutsk (NEFU) and the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI). To penetrate ca. 1 m of lake ice cover, 250-mm-diameter holes were drilled using a hand-held Jiffy ice auger. Water depth was measured using an Echo sounder (HONDEX PS-7 LCD) and a calibrated rope for verification. 100 cm-long parallel cores were collected at 2 m water depth using a Russian peat corer and supported by an UWITEC gravity coring system. Cores were stored in waterproof sealed, transparent PVC plastic tubes in cool and dark conditions. After the field season, the cores were transported to Potsdam, Germany and stored at 4°C in the cold ...