Distribution of Icings (Aufeis) in Northwestern Canada: Insights into Groundwater Conditions
Icings, also known as aufeis, are groundwater fed sheet-layered ice bodies that normally forms in local depression or more often in low angled, shallow river beds. Understanding their distribution in the Mackenzie Valley corridor (N.W.T.) and adjacent Yukon (618,430 km2) provided important insights...
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ftunivottawa:oai:ruor.uottawa.ca:10393/39733 2023-05-15T16:37:02+02:00 Distribution of Icings (Aufeis) in Northwestern Canada: Insights into Groundwater Conditions Crites, Hugo Lacelle, Denis 2019-10-17 application/pdf http://hdl.handle.net/10393/39733 https://doi.org/10.20381/ruor-23976 en eng Université d'Ottawa / University of Ottawa http://hdl.handle.net/10393/39733 http://dx.doi.org/10.20381/ruor-23976 icing aufeis groundwater baseflow permafrost hydrology remote sensing Landsat Thesis 2019 ftunivottawa https://doi.org/10.20381/ruor-23976 2021-01-04T14:45:27Z Icings, also known as aufeis, are groundwater fed sheet-layered ice bodies that normally forms in local depression or more often in low angled, shallow river beds. Understanding their distribution in the Mackenzie Valley corridor (N.W.T.) and adjacent Yukon (618,430 km2) provided important insights to groundwater discharge and recharge. This study aimed at; i) creating the first extensive map of icings in Northwestern Canada, using over 500 late-winter scene Landsat 5 and 7; and ii) assessing hydrographic parameters (streamflow, baseflow and winter contribution) and terrain factors (slope, permafrost, geology) on icing distribution at the watershed level. Results show that; 1) icings are likely to develop close to geological faults on carbonate foothills and mountainous terrain, where continuous permafrost is present and on slopes of less than 5 degrees; 2) in the continuous permafrost zone, the cumulative surface area of icings, winter discharge and winter contribution to total annual discharge have significant positive relations with watershed extents. Icings located at the southern boundary of continuous permafrost are more sensitive to degrading permafrost and the predicted increase in groundwater discharge which may lead to a later icing accretion and earlier ablation during the year. Thesis Ice Mackenzie Valley permafrost Yukon uO Research (University of Ottawa - uOttawa) Canada Mackenzie Valley ENVELOPE(-126.070,-126.070,52.666,52.666) Yukon |
institution |
Open Polar |
collection |
uO Research (University of Ottawa - uOttawa) |
op_collection_id |
ftunivottawa |
language |
English |
topic |
icing aufeis groundwater baseflow permafrost hydrology remote sensing Landsat |
spellingShingle |
icing aufeis groundwater baseflow permafrost hydrology remote sensing Landsat Crites, Hugo Distribution of Icings (Aufeis) in Northwestern Canada: Insights into Groundwater Conditions |
topic_facet |
icing aufeis groundwater baseflow permafrost hydrology remote sensing Landsat |
description |
Icings, also known as aufeis, are groundwater fed sheet-layered ice bodies that normally forms in local depression or more often in low angled, shallow river beds. Understanding their distribution in the Mackenzie Valley corridor (N.W.T.) and adjacent Yukon (618,430 km2) provided important insights to groundwater discharge and recharge. This study aimed at; i) creating the first extensive map of icings in Northwestern Canada, using over 500 late-winter scene Landsat 5 and 7; and ii) assessing hydrographic parameters (streamflow, baseflow and winter contribution) and terrain factors (slope, permafrost, geology) on icing distribution at the watershed level. Results show that; 1) icings are likely to develop close to geological faults on carbonate foothills and mountainous terrain, where continuous permafrost is present and on slopes of less than 5 degrees; 2) in the continuous permafrost zone, the cumulative surface area of icings, winter discharge and winter contribution to total annual discharge have significant positive relations with watershed extents. Icings located at the southern boundary of continuous permafrost are more sensitive to degrading permafrost and the predicted increase in groundwater discharge which may lead to a later icing accretion and earlier ablation during the year. |
author2 |
Lacelle, Denis |
format |
Thesis |
author |
Crites, Hugo |
author_facet |
Crites, Hugo |
author_sort |
Crites, Hugo |
title |
Distribution of Icings (Aufeis) in Northwestern Canada: Insights into Groundwater Conditions |
title_short |
Distribution of Icings (Aufeis) in Northwestern Canada: Insights into Groundwater Conditions |
title_full |
Distribution of Icings (Aufeis) in Northwestern Canada: Insights into Groundwater Conditions |
title_fullStr |
Distribution of Icings (Aufeis) in Northwestern Canada: Insights into Groundwater Conditions |
title_full_unstemmed |
Distribution of Icings (Aufeis) in Northwestern Canada: Insights into Groundwater Conditions |
title_sort |
distribution of icings (aufeis) in northwestern canada: insights into groundwater conditions |
publisher |
Université d'Ottawa / University of Ottawa |
publishDate |
2019 |
url |
http://hdl.handle.net/10393/39733 https://doi.org/10.20381/ruor-23976 |
long_lat |
ENVELOPE(-126.070,-126.070,52.666,52.666) |
geographic |
Canada Mackenzie Valley Yukon |
geographic_facet |
Canada Mackenzie Valley Yukon |
genre |
Ice Mackenzie Valley permafrost Yukon |
genre_facet |
Ice Mackenzie Valley permafrost Yukon |
op_relation |
http://hdl.handle.net/10393/39733 http://dx.doi.org/10.20381/ruor-23976 |
op_doi |
https://doi.org/10.20381/ruor-23976 |
_version_ |
1766027349056290816 |