Lakes and Permafrost in Old Crow Flats
Two sets of thermistor cables will be installed, one at a site in the OCF where drill depth will target 50 m, and the other closer to the community. The site in OCF will be used to obtain the curvature in the ground temperature profile, and establish the apparent response to recent regional increase...
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Canadian Cryospheric Information Network
2012
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ftdatacite:10.5443/1672 2023-05-15T16:36:42+02:00 Lakes and Permafrost in Old Crow Flats Nagwan, Lance Burn, Chris Brown, Blayne Dougie Charlie Kibbe Tetlich Roy-Leveille, Pascale 2012 https://dx.doi.org/10.5443/1672 https://www.polardata.ca/pdcsearch/?doi_id=1672 en eng Canadian Cryospheric Information Network Public Ice wedges Lake Landscape Old Crow Permafrost Yukon International Polar Year-Yeendoo Nanh Nakhweenjit K'atr' ahanahtyaa Environmental change and traditional use of the Old Crow Flats in northern Canada dataset Dataset 2012 ftdatacite https://doi.org/10.5443/1672 2021-11-05T12:55:41Z Two sets of thermistor cables will be installed, one at a site in the OCF where drill depth will target 50 m, and the other closer to the community. The site in OCF will be used to obtain the curvature in the ground temperature profile, and establish the apparent response to recent regional increases in air temperature. The sites nearer to Old Crow will be established to 10 m depth, and will be monitored monthly by the VGFN on a long-term basis, to observe the response of permafrost to future climate change as it occurs. These data will be used to establish the relation between climate change and permafrost under two or three surface types in the area. Ground-ice investigations will concentrate on conditions in the uppermost 2 m of permafrost to establish the potential subsidence of the terrain following active-layer deepening. An active-layer course will be established for long-term community monitoring of climate-change impact, with benchmarks to record the accompanying subsidence of the ground. Soils in near-surface permafrost will be assessed for carbon content to estimate the potential carbon release due to warming. Rates of lake expansion will be determined for the OCF and lake-bottom temperatures will be collected to determine the thermal impact of the lakes on permafrost. A graduate student will be recruited to lead this initiative. : Purpose: Examine the permafrost conditions along lakeshores in Old Crow Flats : Summary: Northern Yukon is in the zone of continuous permafrost, but there is little local information on the temperature or quantity of ice in the ground. In the OCF, there are over 2600 lakes, many of which are expanding, apparently due to melting of the surrounding permafrost. Permafrost research activities will comprise 1) documenting the present ground temperature profile in the OCF, 2) establishing a community monitoring program for measurement of permafrost temperatures at sites accessible year-round from Old Crow, and 3) investigating the near-surface ground ice content of the OCF. Dataset Ice International Polar Year Old Crow permafrost wedge* Yukon DataCite Metadata Store (German National Library of Science and Technology) Yukon Canada Old Crow Flats ENVELOPE(-139.755,-139.755,68.083,68.083) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Ice wedges Lake Landscape Old Crow Permafrost Yukon International Polar Year-Yeendoo Nanh Nakhweenjit K'atr' ahanahtyaa Environmental change and traditional use of the Old Crow Flats in northern Canada |
spellingShingle |
Ice wedges Lake Landscape Old Crow Permafrost Yukon International Polar Year-Yeendoo Nanh Nakhweenjit K'atr' ahanahtyaa Environmental change and traditional use of the Old Crow Flats in northern Canada Nagwan, Lance Burn, Chris Brown, Blayne Dougie Charlie Kibbe Tetlich Roy-Leveille, Pascale Lakes and Permafrost in Old Crow Flats |
topic_facet |
Ice wedges Lake Landscape Old Crow Permafrost Yukon International Polar Year-Yeendoo Nanh Nakhweenjit K'atr' ahanahtyaa Environmental change and traditional use of the Old Crow Flats in northern Canada |
description |
Two sets of thermistor cables will be installed, one at a site in the OCF where drill depth will target 50 m, and the other closer to the community. The site in OCF will be used to obtain the curvature in the ground temperature profile, and establish the apparent response to recent regional increases in air temperature. The sites nearer to Old Crow will be established to 10 m depth, and will be monitored monthly by the VGFN on a long-term basis, to observe the response of permafrost to future climate change as it occurs. These data will be used to establish the relation between climate change and permafrost under two or three surface types in the area. Ground-ice investigations will concentrate on conditions in the uppermost 2 m of permafrost to establish the potential subsidence of the terrain following active-layer deepening. An active-layer course will be established for long-term community monitoring of climate-change impact, with benchmarks to record the accompanying subsidence of the ground. Soils in near-surface permafrost will be assessed for carbon content to estimate the potential carbon release due to warming. Rates of lake expansion will be determined for the OCF and lake-bottom temperatures will be collected to determine the thermal impact of the lakes on permafrost. A graduate student will be recruited to lead this initiative. : Purpose: Examine the permafrost conditions along lakeshores in Old Crow Flats : Summary: Northern Yukon is in the zone of continuous permafrost, but there is little local information on the temperature or quantity of ice in the ground. In the OCF, there are over 2600 lakes, many of which are expanding, apparently due to melting of the surrounding permafrost. Permafrost research activities will comprise 1) documenting the present ground temperature profile in the OCF, 2) establishing a community monitoring program for measurement of permafrost temperatures at sites accessible year-round from Old Crow, and 3) investigating the near-surface ground ice content of the OCF. |
format |
Dataset |
author |
Nagwan, Lance Burn, Chris Brown, Blayne Dougie Charlie Kibbe Tetlich Roy-Leveille, Pascale |
author_facet |
Nagwan, Lance Burn, Chris Brown, Blayne Dougie Charlie Kibbe Tetlich Roy-Leveille, Pascale |
author_sort |
Nagwan, Lance |
title |
Lakes and Permafrost in Old Crow Flats |
title_short |
Lakes and Permafrost in Old Crow Flats |
title_full |
Lakes and Permafrost in Old Crow Flats |
title_fullStr |
Lakes and Permafrost in Old Crow Flats |
title_full_unstemmed |
Lakes and Permafrost in Old Crow Flats |
title_sort |
lakes and permafrost in old crow flats |
publisher |
Canadian Cryospheric Information Network |
publishDate |
2012 |
url |
https://dx.doi.org/10.5443/1672 https://www.polardata.ca/pdcsearch/?doi_id=1672 |
long_lat |
ENVELOPE(-139.755,-139.755,68.083,68.083) |
geographic |
Yukon Canada Old Crow Flats |
geographic_facet |
Yukon Canada Old Crow Flats |
genre |
Ice International Polar Year Old Crow permafrost wedge* Yukon |
genre_facet |
Ice International Polar Year Old Crow permafrost wedge* Yukon |
op_rights |
Public |
op_doi |
https://doi.org/10.5443/1672 |
_version_ |
1766027040371245056 |