Water and sediment properties at Polar Fox Lagoon ...

• Main Authors: Angelopoulos, Michael, Overduin, Pier Paul, Westermann, Sebastian, Tronicke, Jens, Strauss, Jens, Schirrmeister, Lutz, Biskaborn, Boris K, Maximov, Georgy M, Liebner, Susanne, Grigoriev, Mikhail N, Kitte, Axel, Grosse, Guido
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2019
• Subjects: electrical resistivity; Permafrost; sediment; submarine; subsea; Temperature; Permafrost Research AWI_Perma; Polar Terrestrial Environmental Systems @ AWI AWI_Envi; Arctic; Guido; Maksimov; Strauss; Talik; Tiksi; Ice; permafrost; polar fox; Thermokarst; Tiksi Bay; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.907479; https://doi.pangaea.de/10.1594/PANGAEA.907479

As the Arctic coast erodes, it drains thermokarst lakes, transforming them into lagoons, and, eventually, integrates them into subsea permafrost. Lagoons represent the first stage of a thermokarst lake transition to a marine setting and possibly more saline and colder upper boundary conditions. In this research, borehole data, electrical resistivity surveying, and modeling of heat and salt diffusion were carried out at Polar Fox Lagoon on the Bykovsky Peninsula, Siberia. Polar Fox Lagoon is a seasonally isolated water body connected to Tiksi Bay through a channel, leading to hypersaline waters under the ice cover. The boreholes in the center of the lagoon revealed floating ice and a saline cryotic bed underlain by a saline cryotic talik, a thin ice‐bearing permafrost layer, and unfrozen ground. The bathymetry showed that most of the lagoon had bedfast ice in spring. In bedfast ice areas, the electrical resistivity profiles suggested that an unfrozen saline layer was underlain by a thick layer of refrozen ... : Supplement to: Angelopoulos, Michael; Overduin, Pier Paul; Westermann, Sebastian; Tronicke, Jens; Strauss, Jens; Schirrmeister, Lutz; Biskaborn, Boris K; Liebner, Susanne; Maksimov, Georgii M; Grigoriev, Mikhail N; Grosse, Guido (2020): Thermokarst Lake to Lagoon Transitions in Eastern Siberia: Do Submerged Taliks Refreeze? Journal of Geophysical Research-Earth Surface, 125(10) ...