On the Intermittent Formation of an Ice Bridge (Nunniq) across Roes Welcome Sound, Northwestern Hudson Bay and Its Use to Local Inuit Hunters
Ice bridges are unique features that form when sea ice consolidates and remains immobilized within channels. They form in many locations throughout the Arctic and are typically noted for the polynyas that form on their lee side. However, ice bridges also provide a temporary platform that may be used...
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The Arctic Institute of North America
2022
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ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/74957 2023-05-15T14:19:02+02:00 On the Intermittent Formation of an Ice Bridge (Nunniq) across Roes Welcome Sound, Northwestern Hudson Bay and Its Use to Local Inuit Hunters Babb, David G. Kirillov, Sergei Kuzyk, Zou Zou A. Netser, Troy Liesch, Jasmine Kamula, C. Michelle Zagon, Tom Barber, David G. Ehn, Jens K. 2022-06-11 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/74957 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/74957/55891 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/74957 Copyright (c) 2022 ARCTIC http://creativecommons.org/licenses/by/4.0/ CC-BY ARCTIC; Vol. 75 No. 2 (2022): JUNE 149-290; 198-224 1923-1245 0004-0843 sea ice ice bridge Roes Welcome Sound Nunavut Kivalliq Hudson Bay Inuit knowledge remote sensing info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 2022 ftunivcalgaryojs 2022-06-19T17:29:43Z Ice bridges are unique features that form when sea ice consolidates and remains immobilized within channels. They form in many locations throughout the Arctic and are typically noted for the polynyas that form on their lee side. However, ice bridges also provide a temporary platform that may be used by both humans and wildlife to cross otherwise impassable channels. For generations, Inuit in Coral Harbour, Nunavut, have used an ice bridge to cross Roes Welcome Sound and expand their hunting territory, though they report that the bridge only forms approximately every four years. Of interest both to Inuit and the scientific community is why the bridge forms so intermittently, by what mechanisms, and whether the frequency will change with ongoing warming and sea ice loss. Using satellite imagery, we determined that the bridge formed during 14 of the past 50 years (1971 – 2020). Generally, the bridge forms between January and March during a cold period that coincides with neap tide and after surface winds have rotated from the prevailing northerly (along-channel) winds to west-northwesterly (across-channel) winds. This rotation compresses the existing ice pack against Southampton Island, where it remains stationary because of the calm along-channel winds and low tidal range and coalesces under cold air temperatures. Breakup occurs between mid-June and early July after the onset of melt. Overall, the bridge forms when a specific set of conditions occur simultaneously; however, a warming climate, specifically a reduction in very cold days and a shorter ice season may affect the frequency of bridge formation, thereby limiting Inuit travel. Les ponts de glace sont des caractéristiques uniques qui se forment lorsque la glace de mer se consolide et reste immobilisée dans les chenaux. Ils se forment en maint endroit de l’Arctique et se démarquent généralement par les polynies qui se créent de leur côté sous le vent. Cependant, les ponts de glace font aussi office de plateforme temporaire dont peuvent se servir tant les ... Article in Journal/Newspaper Arctic Arctic Coral Harbour Hudson Bay ice pack inuit Kivalliq Nunavut Roes Welcome Sound Sea ice Southampton Island University of Calgary Journal Hosting Arctic Coral Harbour ENVELOPE(-83.073,-83.073,64.122,64.122) Hudson Hudson Bay Nunavut Roes Welcome Sound ENVELOPE(-86.666,-86.666,65.018,65.018) Southampton Island ENVELOPE(-84.501,-84.501,64.463,64.463) |
institution |
Open Polar |
collection |
University of Calgary Journal Hosting |
op_collection_id |
ftunivcalgaryojs |
language |
English |
topic |
sea ice ice bridge Roes Welcome Sound Nunavut Kivalliq Hudson Bay Inuit knowledge remote sensing |
spellingShingle |
sea ice ice bridge Roes Welcome Sound Nunavut Kivalliq Hudson Bay Inuit knowledge remote sensing Babb, David G. Kirillov, Sergei Kuzyk, Zou Zou A. Netser, Troy Liesch, Jasmine Kamula, C. Michelle Zagon, Tom Barber, David G. Ehn, Jens K. On the Intermittent Formation of an Ice Bridge (Nunniq) across Roes Welcome Sound, Northwestern Hudson Bay and Its Use to Local Inuit Hunters |
topic_facet |
sea ice ice bridge Roes Welcome Sound Nunavut Kivalliq Hudson Bay Inuit knowledge remote sensing |
description |
Ice bridges are unique features that form when sea ice consolidates and remains immobilized within channels. They form in many locations throughout the Arctic and are typically noted for the polynyas that form on their lee side. However, ice bridges also provide a temporary platform that may be used by both humans and wildlife to cross otherwise impassable channels. For generations, Inuit in Coral Harbour, Nunavut, have used an ice bridge to cross Roes Welcome Sound and expand their hunting territory, though they report that the bridge only forms approximately every four years. Of interest both to Inuit and the scientific community is why the bridge forms so intermittently, by what mechanisms, and whether the frequency will change with ongoing warming and sea ice loss. Using satellite imagery, we determined that the bridge formed during 14 of the past 50 years (1971 – 2020). Generally, the bridge forms between January and March during a cold period that coincides with neap tide and after surface winds have rotated from the prevailing northerly (along-channel) winds to west-northwesterly (across-channel) winds. This rotation compresses the existing ice pack against Southampton Island, where it remains stationary because of the calm along-channel winds and low tidal range and coalesces under cold air temperatures. Breakup occurs between mid-June and early July after the onset of melt. Overall, the bridge forms when a specific set of conditions occur simultaneously; however, a warming climate, specifically a reduction in very cold days and a shorter ice season may affect the frequency of bridge formation, thereby limiting Inuit travel. Les ponts de glace sont des caractéristiques uniques qui se forment lorsque la glace de mer se consolide et reste immobilisée dans les chenaux. Ils se forment en maint endroit de l’Arctique et se démarquent généralement par les polynies qui se créent de leur côté sous le vent. Cependant, les ponts de glace font aussi office de plateforme temporaire dont peuvent se servir tant les ... |
format |
Article in Journal/Newspaper |
author |
Babb, David G. Kirillov, Sergei Kuzyk, Zou Zou A. Netser, Troy Liesch, Jasmine Kamula, C. Michelle Zagon, Tom Barber, David G. Ehn, Jens K. |
author_facet |
Babb, David G. Kirillov, Sergei Kuzyk, Zou Zou A. Netser, Troy Liesch, Jasmine Kamula, C. Michelle Zagon, Tom Barber, David G. Ehn, Jens K. |
author_sort |
Babb, David G. |
title |
On the Intermittent Formation of an Ice Bridge (Nunniq) across Roes Welcome Sound, Northwestern Hudson Bay and Its Use to Local Inuit Hunters |
title_short |
On the Intermittent Formation of an Ice Bridge (Nunniq) across Roes Welcome Sound, Northwestern Hudson Bay and Its Use to Local Inuit Hunters |
title_full |
On the Intermittent Formation of an Ice Bridge (Nunniq) across Roes Welcome Sound, Northwestern Hudson Bay and Its Use to Local Inuit Hunters |
title_fullStr |
On the Intermittent Formation of an Ice Bridge (Nunniq) across Roes Welcome Sound, Northwestern Hudson Bay and Its Use to Local Inuit Hunters |
title_full_unstemmed |
On the Intermittent Formation of an Ice Bridge (Nunniq) across Roes Welcome Sound, Northwestern Hudson Bay and Its Use to Local Inuit Hunters |
title_sort |
on the intermittent formation of an ice bridge (nunniq) across roes welcome sound, northwestern hudson bay and its use to local inuit hunters |
publisher |
The Arctic Institute of North America |
publishDate |
2022 |
url |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/74957 |
long_lat |
ENVELOPE(-83.073,-83.073,64.122,64.122) ENVELOPE(-86.666,-86.666,65.018,65.018) ENVELOPE(-84.501,-84.501,64.463,64.463) |
geographic |
Arctic Coral Harbour Hudson Hudson Bay Nunavut Roes Welcome Sound Southampton Island |
geographic_facet |
Arctic Coral Harbour Hudson Hudson Bay Nunavut Roes Welcome Sound Southampton Island |
genre |
Arctic Arctic Coral Harbour Hudson Bay ice pack inuit Kivalliq Nunavut Roes Welcome Sound Sea ice Southampton Island |
genre_facet |
Arctic Arctic Coral Harbour Hudson Bay ice pack inuit Kivalliq Nunavut Roes Welcome Sound Sea ice Southampton Island |
op_source |
ARCTIC; Vol. 75 No. 2 (2022): JUNE 149-290; 198-224 1923-1245 0004-0843 |
op_relation |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/74957/55891 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/74957 |
op_rights |
Copyright (c) 2022 ARCTIC http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
_version_ |
1766290565698158592 |