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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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.907479 2024-05-19T07:36:34+00:00 Water and sediment properties at Polar Fox Lagoon 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 MEDIAN LATITUDE: 71.743747 * MEDIAN LONGITUDE: 129.337908 * SOUTH-BOUND LATITUDE: 71.728435 * WEST-BOUND LONGITUDE: 129.313954 * NORTH-BOUND LATITUDE: 71.752150 * EAST-BOUND LONGITUDE: 129.348090 * DATE/TIME START: 2017-04-10T00:00:00 * DATE/TIME END: 2019-04-07T06:50:15 2019 application/zip, 12 datasets https://doi.pangaea.de/10.1594/PANGAEA.907479 https://doi.org/10.1594/PANGAEA.907479 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.907479 https://doi.org/10.1594/PANGAEA.907479 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess 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), https://doi.org/10.1029/2019JF005424 AWI_Envi AWI_Perma electrical resistivity Permafrost Permafrost Research Polar Terrestrial Environmental Systems @ AWI sediment submarine subsea Temperature Dataset 2019 ftpangaea https://doi.org/10.1594/PANGAEA.90747910.1029/2019JF005424 2024-04-30T23:34:34Z 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 talik. The modeling showed that thermokarst lake taliks can refreeze when submerged in saltwater with mean annual bottom water temperatures below or slightly above 0°C. This occurs, because the top‐down chemical degradation of newly formed ice‐bearing permafrost is slower than the refreezing of the talik. Hence, lagoons may precondition taliks with a layer of ice‐bearing permafrost before encroachment by the sea, and this frozen layer may act as a cap on gas migration out of the underlying talik. Dataset Arctic Ice permafrost polar fox Thermokarst Tiksi Tiksi Bay Siberia PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(129.313954,129.348090,71.752150,71.728435) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_Envi AWI_Perma electrical resistivity Permafrost Permafrost Research Polar Terrestrial Environmental Systems @ AWI sediment submarine subsea Temperature |
spellingShingle |
AWI_Envi AWI_Perma electrical resistivity Permafrost Permafrost Research Polar Terrestrial Environmental Systems @ AWI sediment submarine subsea Temperature 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 Water and sediment properties at Polar Fox Lagoon |
topic_facet |
AWI_Envi AWI_Perma electrical resistivity Permafrost Permafrost Research Polar Terrestrial Environmental Systems @ AWI sediment submarine subsea Temperature |
description |
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 talik. The modeling showed that thermokarst lake taliks can refreeze when submerged in saltwater with mean annual bottom water temperatures below or slightly above 0°C. This occurs, because the top‐down chemical degradation of newly formed ice‐bearing permafrost is slower than the refreezing of the talik. Hence, lagoons may precondition taliks with a layer of ice‐bearing permafrost before encroachment by the sea, and this frozen layer may act as a cap on gas migration out of the underlying talik. |
format |
Dataset |
author |
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 |
author_facet |
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 |
author_sort |
Angelopoulos, Michael |
title |
Water and sediment properties at Polar Fox Lagoon |
title_short |
Water and sediment properties at Polar Fox Lagoon |
title_full |
Water and sediment properties at Polar Fox Lagoon |
title_fullStr |
Water and sediment properties at Polar Fox Lagoon |
title_full_unstemmed |
Water and sediment properties at Polar Fox Lagoon |
title_sort |
water and sediment properties at polar fox lagoon |
publisher |
PANGAEA |
publishDate |
2019 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.907479 https://doi.org/10.1594/PANGAEA.907479 |
op_coverage |
MEDIAN LATITUDE: 71.743747 * MEDIAN LONGITUDE: 129.337908 * SOUTH-BOUND LATITUDE: 71.728435 * WEST-BOUND LONGITUDE: 129.313954 * NORTH-BOUND LATITUDE: 71.752150 * EAST-BOUND LONGITUDE: 129.348090 * DATE/TIME START: 2017-04-10T00:00:00 * DATE/TIME END: 2019-04-07T06:50:15 |
long_lat |
ENVELOPE(129.313954,129.348090,71.752150,71.728435) |
genre |
Arctic Ice permafrost polar fox Thermokarst Tiksi Tiksi Bay Siberia |
genre_facet |
Arctic Ice permafrost polar fox Thermokarst Tiksi Tiksi Bay Siberia |
op_source |
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), https://doi.org/10.1029/2019JF005424 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.907479 https://doi.org/10.1594/PANGAEA.907479 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.90747910.1029/2019JF005424 |
_version_ |
1799475698618859520 |