Temperature measurements at three subaquatic sites in the Mackenzie Delta, Northwest Territories, Canada ...
Bottom water temperatures in lakes and the near-shore Arctic Ocean are usually below 4°C. If the water depth is shallow enough, the sea/lake ice freezes to the sea/lake bed and may significantly shift the mean annual temperature below zero. Thus, pre-existing permafrost may survive inundation but un...
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ftdatacite:10.1594/pangaea.949290 2024-03-31T07:50:38+00:00 Temperature measurements at three subaquatic sites in the Mackenzie Delta, Northwest Territories, Canada ... Miesner, Frederieke Cable, William L Boike, Julia 2022 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.949290 https://doi.pangaea.de/10.1594/PANGAEA.949290 en eng PANGAEA https://dx.doi.org/10.1594/pangaea.949183 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 active layer Bathymetry Canadian Arctic Permafrost talik Temperature Water Depth Event label DATE/TIME LATITUDE LONGITUDE ELEVATION Temperature, soil Temperature Lance CA-Land_2021_NWCanada AWI Arctic Land Expedition Modular Observation Solutions for Earth Systems MOSES Permafrost Research AWI_Perma Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn dataset Dataset 2022 ftdatacite https://doi.org/10.1594/pangaea.94929010.1594/pangaea.949183 2024-03-04T13:06:06Z Bottom water temperatures in lakes and the near-shore Arctic Ocean are usually below 4°C. If the water depth is shallow enough, the sea/lake ice freezes to the sea/lake bed and may significantly shift the mean annual temperature below zero. Thus, pre-existing permafrost may survive inundation but undergoes a rapid warming of up to 10°C. Taliks form and grow deeper over time. The temperature regime below the water is therefore directly dependent on the water depth and small changes can have a huge impact. Measurements of the sediment temperature below shallow water bodies are scarce, and single temperature-chains in boreholes are not sufficient to map spatial variability. We are using a new temperature lance to measure temperature profiles in lake sediments. The device is a 1.5m steel lance with 30 sensors at 5cm spacing that can be pushed or hammered into the sediment. The sensors equilibrate to sensor accuracy within 10min, allowing for repeat measurements to cover the spatial variability. As part of the ... Dataset Arctic Arctic Ocean Ice Mackenzie Delta Northwest Territories permafrost Talik DataCite Metadata Store (German National Library of Science and Technology) Arctic Arctic Ocean Canada Mackenzie Delta ENVELOPE(-136.672,-136.672,68.833,68.833) Moses ENVELOPE(-99.183,-99.183,-74.550,-74.550) Northwest Territories Talik ENVELOPE(146.601,146.601,59.667,59.667) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
active layer Bathymetry Canadian Arctic Permafrost talik Temperature Water Depth Event label DATE/TIME LATITUDE LONGITUDE ELEVATION Temperature, soil Temperature Lance CA-Land_2021_NWCanada AWI Arctic Land Expedition Modular Observation Solutions for Earth Systems MOSES Permafrost Research AWI_Perma Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn |
spellingShingle |
active layer Bathymetry Canadian Arctic Permafrost talik Temperature Water Depth Event label DATE/TIME LATITUDE LONGITUDE ELEVATION Temperature, soil Temperature Lance CA-Land_2021_NWCanada AWI Arctic Land Expedition Modular Observation Solutions for Earth Systems MOSES Permafrost Research AWI_Perma Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn Miesner, Frederieke Cable, William L Boike, Julia Temperature measurements at three subaquatic sites in the Mackenzie Delta, Northwest Territories, Canada ... |
topic_facet |
active layer Bathymetry Canadian Arctic Permafrost talik Temperature Water Depth Event label DATE/TIME LATITUDE LONGITUDE ELEVATION Temperature, soil Temperature Lance CA-Land_2021_NWCanada AWI Arctic Land Expedition Modular Observation Solutions for Earth Systems MOSES Permafrost Research AWI_Perma Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn |
description |
Bottom water temperatures in lakes and the near-shore Arctic Ocean are usually below 4°C. If the water depth is shallow enough, the sea/lake ice freezes to the sea/lake bed and may significantly shift the mean annual temperature below zero. Thus, pre-existing permafrost may survive inundation but undergoes a rapid warming of up to 10°C. Taliks form and grow deeper over time. The temperature regime below the water is therefore directly dependent on the water depth and small changes can have a huge impact. Measurements of the sediment temperature below shallow water bodies are scarce, and single temperature-chains in boreholes are not sufficient to map spatial variability. We are using a new temperature lance to measure temperature profiles in lake sediments. The device is a 1.5m steel lance with 30 sensors at 5cm spacing that can be pushed or hammered into the sediment. The sensors equilibrate to sensor accuracy within 10min, allowing for repeat measurements to cover the spatial variability. As part of the ... |
format |
Dataset |
author |
Miesner, Frederieke Cable, William L Boike, Julia |
author_facet |
Miesner, Frederieke Cable, William L Boike, Julia |
author_sort |
Miesner, Frederieke |
title |
Temperature measurements at three subaquatic sites in the Mackenzie Delta, Northwest Territories, Canada ... |
title_short |
Temperature measurements at three subaquatic sites in the Mackenzie Delta, Northwest Territories, Canada ... |
title_full |
Temperature measurements at three subaquatic sites in the Mackenzie Delta, Northwest Territories, Canada ... |
title_fullStr |
Temperature measurements at three subaquatic sites in the Mackenzie Delta, Northwest Territories, Canada ... |
title_full_unstemmed |
Temperature measurements at three subaquatic sites in the Mackenzie Delta, Northwest Territories, Canada ... |
title_sort |
temperature measurements at three subaquatic sites in the mackenzie delta, northwest territories, canada ... |
publisher |
PANGAEA |
publishDate |
2022 |
url |
https://dx.doi.org/10.1594/pangaea.949290 https://doi.pangaea.de/10.1594/PANGAEA.949290 |
long_lat |
ENVELOPE(-136.672,-136.672,68.833,68.833) ENVELOPE(-99.183,-99.183,-74.550,-74.550) ENVELOPE(146.601,146.601,59.667,59.667) |
geographic |
Arctic Arctic Ocean Canada Mackenzie Delta Moses Northwest Territories Talik |
geographic_facet |
Arctic Arctic Ocean Canada Mackenzie Delta Moses Northwest Territories Talik |
genre |
Arctic Arctic Ocean Ice Mackenzie Delta Northwest Territories permafrost Talik |
genre_facet |
Arctic Arctic Ocean Ice Mackenzie Delta Northwest Territories permafrost Talik |
op_relation |
https://dx.doi.org/10.1594/pangaea.949183 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.1594/pangaea.94929010.1594/pangaea.949183 |
_version_ |
1795028989045112832 |