Sedimentological characteristics of sediment cores from a land – shore transect in the Teshekpuk Lake Region in Arctic Alaska, 2022

• Main Authors: Giest, Frieda, Jenrich, Maren, Grosse, Guido, Jones, Benjamin, Mangelsdorf, Kai, Windirsch, Torben, Strauss, Jens
• Format: Dataset
• Language: English
• Published: PANGAEA
• Subjects: AK-Land_2022_NorthSlope; AK-Land_2022_NorthSlope_TES22-DLB1-01; AK-Land_2022_NorthSlope_TES22-LAG1-01; AK-Land_2022_NorthSlope_TES22-LAG2-01; AK-Land_2022_NorthSlope_TES22-MAR1-02; AK-Land_2022_NorthSlope_TES22-TKL1-02; AK-Land_2022_NorthSlope_TES22-UPL1-02; AWI_Perma; AWI Arctic Land Expedition; Biomarker; Clay; coastal thermokarst; Density; dry bulk; Depth; bottom/max; sediment/rock; top/min; DLB; Event label; Grain size; mean; LAG; land-ocean transition; Latitude of event; Longitude of event; MAR; organic carbon; Permafrost; Permafrost Research; Perma-X Lagoons Alaska 2022; PUC; Push corer; Sample ID; Sand; SDLAG; Silt; SIPREC; SIPRE corer; Teshekpuk Lake; TKL; UPL; Water content; wet mass; Arctic; Ice; permafrost; Thermokarst; Alaska
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.971244

This dataset describes six sediment cores (12 - 219 cm length) from different landscape features in a coastal permafrost thermokarst affected landscape in the Theshekpuk Lake region in Arctic Alaska. They are located in a transect from inland to coast, to describes the transitional dynamics between terrestrial and marine permafrost and thermokarst. The cores were drilled during the Perma-X Lagoon expedition in April 2022. The three unfrozen cores from a marine (MAR, 12 cm length), an intact lagoon (LAG, 31 cm length) and a thermokarst lake (TKL, 50 cm length) site, were all sampled using a Push Corer. The three frozen cores, including upland permafrost (UPL, 203 cm length), drained thermokarst lake basin (DLB, 219 cm length) and semi-drained lagoon (SDLAG, 183 cm length) deposits, were drilled using a SIPRE Corer. The sedimentological analysis included subsamples taken in intervals of 5–10 cm along the cores. Parameters included in the sedimentological analysis were water-/ice content [wt%], dry bulk density [g/cm³], and grain size [µm].