Water and sediment properties at Polar Fox Lagoon ...

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 t...

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Bibliographic Details
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
Description
Summary: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) ...

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