Physical characteristics of polar bear winter sea ice habitat
Accumulation of dynamic and thermodynamic forces in the Arctic are decreasing the extent of thin annual sea ice which polar bear rely on for survival. It is imperative that we identify the preferred habitat of polar bears to fully understand their future requirements. In this thesis, surveys of pola...
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2008
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ftcanadathes:oai:collectionscanada.gc.ca:MWU.1993/3054 2023-05-15T15:05:32+02:00 Physical characteristics of polar bear winter sea ice habitat Blouw, Christina Barber, David (Environment & Geography) Hanesiak, John (Environment & Geography) Ferguson, Steven (Department of Fisheries & Oceans) 2008-08-26T15:20:01Z http://hdl.handle.net/1993/3054 en_US eng http://hdl.handle.net/1993/3054 sea ice polar bear habitat 2008 ftcanadathes 2014-03-30T00:50:10Z Accumulation of dynamic and thermodynamic forces in the Arctic are decreasing the extent of thin annual sea ice which polar bear rely on for survival. It is imperative that we identify the preferred habitat of polar bears to fully understand their future requirements. In this thesis, surveys of polar bear tracks and the surrounding sea ice variables, at various scales, were recorded. Sea ice roughness was measured through surveys of the sample area in situ, with an electromagnetic induction (EM) system (IcePIC) mounted to a helicopter, and analyzed through advanced synthetic aperture radar (ASAR) images of the study area. In situ Polar bear tracks provided a limited association with the EM sea ice roughness and a negative association to ASAR sea ice roughness. Results indicate a significant association between EM mean values and ASAR brightness means. In addition, EM statistics and ASAR texture statistics were correlated through a best fit regression model. These associations display a remote method to identify preferred polar bear habitat and provide a potential linkage between the regional (EM) and remotely sensed (ASAR) assessment of sea ice roughness. Other/Unknown Material Arctic Sea ice Theses Canada/Thèses Canada (Library and Archives Canada) Arctic Asar ENVELOPE(134.033,134.033,68.667,68.667) |
institution |
Open Polar |
collection |
Theses Canada/Thèses Canada (Library and Archives Canada) |
op_collection_id |
ftcanadathes |
language |
English |
topic |
sea ice polar bear habitat |
spellingShingle |
sea ice polar bear habitat Blouw, Christina Physical characteristics of polar bear winter sea ice habitat |
topic_facet |
sea ice polar bear habitat |
description |
Accumulation of dynamic and thermodynamic forces in the Arctic are decreasing the extent of thin annual sea ice which polar bear rely on for survival. It is imperative that we identify the preferred habitat of polar bears to fully understand their future requirements. In this thesis, surveys of polar bear tracks and the surrounding sea ice variables, at various scales, were recorded. Sea ice roughness was measured through surveys of the sample area in situ, with an electromagnetic induction (EM) system (IcePIC) mounted to a helicopter, and analyzed through advanced synthetic aperture radar (ASAR) images of the study area. In situ Polar bear tracks provided a limited association with the EM sea ice roughness and a negative association to ASAR sea ice roughness. Results indicate a significant association between EM mean values and ASAR brightness means. In addition, EM statistics and ASAR texture statistics were correlated through a best fit regression model. These associations display a remote method to identify preferred polar bear habitat and provide a potential linkage between the regional (EM) and remotely sensed (ASAR) assessment of sea ice roughness. |
author2 |
Barber, David (Environment & Geography) Hanesiak, John (Environment & Geography) Ferguson, Steven (Department of Fisheries & Oceans) |
author |
Blouw, Christina |
author_facet |
Blouw, Christina |
author_sort |
Blouw, Christina |
title |
Physical characteristics of polar bear winter sea ice habitat |
title_short |
Physical characteristics of polar bear winter sea ice habitat |
title_full |
Physical characteristics of polar bear winter sea ice habitat |
title_fullStr |
Physical characteristics of polar bear winter sea ice habitat |
title_full_unstemmed |
Physical characteristics of polar bear winter sea ice habitat |
title_sort |
physical characteristics of polar bear winter sea ice habitat |
publishDate |
2008 |
url |
http://hdl.handle.net/1993/3054 |
long_lat |
ENVELOPE(134.033,134.033,68.667,68.667) |
geographic |
Arctic Asar |
geographic_facet |
Arctic Asar |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_relation |
http://hdl.handle.net/1993/3054 |
_version_ |
1766337216871661568 |