(Fig. 7) Organic geochemistry of sediment core PG1984

This data set contains organic geochemistry data of sediment core PG1984, retrieved in 2009 from Lake Sysy-Kyuele (Yakutia, Russia) at 2.4 m water depth. The thermokarst lake Sysy-Kyuele is situated in an exorheic basin in a coniferous forest area and has one outflow and no visible inflow. It lies at an elevation of ca. 73m a.s.l. with a surface area of ca. 1 km2 and a maximum lake water depth of estimated 2.5 m. The 1.2 m sediment core was retrieved by a UWITEC hammer action gravity corer during the RU-Land_2009_Lena-transect expedition of the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI, Germany, Potsdam) in cooperation with the North Eastern Federal State University (NEFU, Russia, Yakutsk). Water content and organic matter was analysed at AWI Potsdam. Dried and milled samples were analysed using a Vario EL III carbon-nitrogen-sulphur analyser. Organic carbon content was determined using a Vario MAX C analyser.

本数据集包含PG1984沉积物岩芯的有机地球化学数据，该岩芯于2009年从俄罗斯雅库特地区的瑟西-库耶列湖（Lake Sysy-Kyuele）水深2.4米处采集。瑟西-库耶列湖为热喀斯特湖，位于针叶林区域的外流盆地内，仅设有一处出水口，无明显入水口。该湖海拔约73米，表面积约1平方千米，最大水深估算为2.5米。1.2米长的沉积物岩芯由UWITEC锤击式重力采样器采集，采集工作由德国波茨坦阿尔弗雷德·魏格纳研究所亥姆霍兹极地与海洋研究中心（Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, AWI）联合俄罗斯雅库茨克东北联邦大学（North Eastern Federal State University, NEFU），在"RU-Land_2009_Lena-transect"科考航次中完成。水分含量与有机质组分分析在德国波茨坦的AWI实验室开展：经干燥、研磨后的样品使用Vario EL III型碳氮硫分析仪进行检测，有机碳含量则通过Vario MAX C型碳分析仪测定。