Lake and River Ice Investigations in Northern Manitoba Using Airborne SAR Imagery
Multichannel airborne SAR data were collected over northern Manitoba in April 1989 and January 1990. During the week of the SAR flights, several reconnaissance helicopter flights were undertaken, and ground calibration sites were visited to collect ice, snow, and water data. A total of six SAR image...
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1991
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Online Access: | https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64636 |
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ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/64636 2023-05-15T14:19:12+02:00 Lake and River Ice Investigations in Northern Manitoba Using Airborne SAR Imagery Leconte, Robert Klassen, P. David 1991-01-01 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64636 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64636/48550 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64636 ARCTIC; Vol. 44 No. 5 (1991): Supplement: 1–171; 153-163 1923-1245 0004-0843 Aerial surveys Ice cover Lake ice Mathematical models River ice SAR Burntwood River region Manitoba Northern info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1991 ftunivcalgaryojs 2022-03-22T21:21:48Z Multichannel airborne SAR data were collected over northern Manitoba in April 1989 and January 1990. During the week of the SAR flights, several reconnaissance helicopter flights were undertaken, and ground calibration sites were visited to collect ice, snow, and water data. A total of six SAR image passes were flown in April 1989 and seven in January 1990, in order to collect a data set with numerous incidence angle, frequency, polarization, and look direction combinations. The data have been qualitatively assessed, with specific emphasis on C-band horizontally polarized imagery - the proposed SAR configuration for Radarsat. Results of the analysis have shown that airborne SAR can be used to identify various freshwater ice features, such as juxtaposition ice, refrozen slush, river ice runs, and lake ice. Open water leads were also successfully identified. A careful interpretation of the airborne SAR imagery in conjunction with the ground truth data has shown that the unusually bright returns characterizing the Burntwood River and the west portion of Split Lake were caused by a layer of refrozen slush that was generated during the initial formation of the ice cover. Although the results reported here focused exclusively on a qualitative analysis of C-HH data, preliminary analysis of the digital data suggests that changes in frequency and polarization produce measurable differences and can be used to develop classification algorithms for freshwater ice.Key words: synthetic aperture radar, fresh water ice Mots clés: radar à antenne synthétique, glace d’eau douce Article in Journal/Newspaper Arctic Split Lake University of Calgary Journal Hosting Burntwood River ENVELOPE(-96.575,-96.575,56.139,56.139) ARCTIC 44 5 |
institution |
Open Polar |
collection |
University of Calgary Journal Hosting |
op_collection_id |
ftunivcalgaryojs |
language |
English |
topic |
Aerial surveys Ice cover Lake ice Mathematical models River ice SAR Burntwood River region Manitoba Northern |
spellingShingle |
Aerial surveys Ice cover Lake ice Mathematical models River ice SAR Burntwood River region Manitoba Northern Leconte, Robert Klassen, P. David Lake and River Ice Investigations in Northern Manitoba Using Airborne SAR Imagery |
topic_facet |
Aerial surveys Ice cover Lake ice Mathematical models River ice SAR Burntwood River region Manitoba Northern |
description |
Multichannel airborne SAR data were collected over northern Manitoba in April 1989 and January 1990. During the week of the SAR flights, several reconnaissance helicopter flights were undertaken, and ground calibration sites were visited to collect ice, snow, and water data. A total of six SAR image passes were flown in April 1989 and seven in January 1990, in order to collect a data set with numerous incidence angle, frequency, polarization, and look direction combinations. The data have been qualitatively assessed, with specific emphasis on C-band horizontally polarized imagery - the proposed SAR configuration for Radarsat. Results of the analysis have shown that airborne SAR can be used to identify various freshwater ice features, such as juxtaposition ice, refrozen slush, river ice runs, and lake ice. Open water leads were also successfully identified. A careful interpretation of the airborne SAR imagery in conjunction with the ground truth data has shown that the unusually bright returns characterizing the Burntwood River and the west portion of Split Lake were caused by a layer of refrozen slush that was generated during the initial formation of the ice cover. Although the results reported here focused exclusively on a qualitative analysis of C-HH data, preliminary analysis of the digital data suggests that changes in frequency and polarization produce measurable differences and can be used to develop classification algorithms for freshwater ice.Key words: synthetic aperture radar, fresh water ice Mots clés: radar à antenne synthétique, glace d’eau douce |
format |
Article in Journal/Newspaper |
author |
Leconte, Robert Klassen, P. David |
author_facet |
Leconte, Robert Klassen, P. David |
author_sort |
Leconte, Robert |
title |
Lake and River Ice Investigations in Northern Manitoba Using Airborne SAR Imagery |
title_short |
Lake and River Ice Investigations in Northern Manitoba Using Airborne SAR Imagery |
title_full |
Lake and River Ice Investigations in Northern Manitoba Using Airborne SAR Imagery |
title_fullStr |
Lake and River Ice Investigations in Northern Manitoba Using Airborne SAR Imagery |
title_full_unstemmed |
Lake and River Ice Investigations in Northern Manitoba Using Airborne SAR Imagery |
title_sort |
lake and river ice investigations in northern manitoba using airborne sar imagery |
publisher |
The Arctic Institute of North America |
publishDate |
1991 |
url |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64636 |
long_lat |
ENVELOPE(-96.575,-96.575,56.139,56.139) |
geographic |
Burntwood River |
geographic_facet |
Burntwood River |
genre |
Arctic Split Lake |
genre_facet |
Arctic Split Lake |
op_source |
ARCTIC; Vol. 44 No. 5 (1991): Supplement: 1–171; 153-163 1923-1245 0004-0843 |
op_relation |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64636/48550 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64636 |
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ARCTIC |
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44 |
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5 |
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1766290811651096576 |