Branched glyerol diakyl glyerol tetraether (brGDGT) concentration in thawed sediments underneath a Yedoma and Alas thermokarst lake in Eastern Siberia

• Main Authors: Jongejans, Loeka Laura, Liebner, Susanne, Knoblauch, Christian, Mangelsdorf, Kai, Strauss, Jens
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Alas lake; Arctic; AWI Arctic Land Expedition; Biomarkers; Branched glycerol dialkyl glycerol tetraether; Ia; per unit sediment mass; Ib; IIa; IIb; IIIa; IIIb; Carbon in Permafrost / Kohlenstoff im Permafrost; Central_Yakutia_Yukechi_2015; Central Yakutia; CLICCS; Cluster of Excellence: Climate; Climatic Change; and Society; Core; Depth; bottom/max; sediment/rock; top/min; Event label; greenhouse gas production; KoPF; Liquid chromatography-mass spectrometry (LC-MS); PETA-CARB; Rapid Permafrost Thaw in a Warming Arctic and Impacts on the Soil Organic Carbon Pool; RCDT; RU-Land_2015_CentralYakutia_Yuke; Sample ID; talik; thawed permafrost; thermokarst lake; Truck mounted rotary drill; Yedoma deposits; permafrost; Thermokarst; Yakutia; Siberia
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.928135; https://doi.org/10.1594/PANGAEA.928135

This dataset describs two 17 m long sediment cores taken from beneath two thermokarst lakes in the Yukechi Alas, Central Yakutia, Russia. The first core was taken from below an Alas thermokarst lake (YU-L7; 61.76397°N, 130.46442°E) and the second core below and Yedoma lake (YU-L15; 61.76086°N, 130.47466°E). The dataset presents the branched glyerol diakyl glyerol tetraether (brGDGT) concentrations from sediment cores YUL7 and YU-L15 which are given in µg/g sediment. The branched glycerol dialkyl glycerol tetraethers were measured in the NSO fraction using a Shimadzu LC-10AD high-performance liquid chromatograph coupled to a Finnigan TSQ 7000 mass spectrometer via an atmospheric pressure chemical ionization interface.