Airborne UHF radar sounding of glaciers and ice shelves, northern Ellesmere Island, Arctic Canada
More than 2000 line-kilometres of ice were sounded in 1981 using an 840 MHz pulsed radar system. The surveyed regions include Mt. Oxford ice cap, Disraeli Glacier, Milne Glacier, Ward Hunt Ice Shelf, and Milne Ice Shelf in northern Ellesmere Island, Arctic Canada. The maximum ice thickness that was...
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Language: | English |
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Canadian Science Publishing
1988
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Online Access: | http://dx.doi.org/10.1139/e88-010 http://www.nrcresearchpress.com/doi/pdf/10.1139/e88-010 |
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crcansciencepubl:10.1139/e88-010 2024-04-28T08:08:46+00:00 Airborne UHF radar sounding of glaciers and ice shelves, northern Ellesmere Island, Arctic Canada Narod, B. Barry Clarke, Garry K. C. Prager, Bradley T. 1988 http://dx.doi.org/10.1139/e88-010 http://www.nrcresearchpress.com/doi/pdf/10.1139/e88-010 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 25, issue 1, page 95-105 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1988 crcansciencepubl https://doi.org/10.1139/e88-010 2024-04-02T06:55:53Z More than 2000 line-kilometres of ice were sounded in 1981 using an 840 MHz pulsed radar system. The surveyed regions include Mt. Oxford ice cap, Disraeli Glacier, Milne Glacier, Ward Hunt Ice Shelf, and Milne Ice Shelf in northern Ellesmere Island, Arctic Canada. The maximum ice thickness that was reliably recorded was 750 m for Milne Glacier. In addition to ice thickness interpretation, the power reflection coefficient (PRC) and propagation loss rate were estimated from the data. Measured basal PRC's differ for ice shelves, floating glaciers, and grounded glaciers. Spatial variations of PRC have been used to infer a composite structure for the ice shelves. Ward Hunt Ice Shelf proved difficult to sound, probably because of its known saline and brackish chemistry. Excellent results were obtained for Milne Ice Shelf and its depth was found to average roughly 70 m, in places attaining 100 m. Bottom-side crevasses were observed within Milne Ice Shelf. The characteristic ridge and trough topography of the ice shelf surface has little or no bottom-side expression. Article in Journal/Newspaper Arctic Ellesmere Island glacier* Ice cap Ice Shelf Ice Shelves Milne Ice Shelf Ward Hunt Ice Shelf Canadian Science Publishing Canadian Journal of Earth Sciences 25 1 95 105 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Narod, B. Barry Clarke, Garry K. C. Prager, Bradley T. Airborne UHF radar sounding of glaciers and ice shelves, northern Ellesmere Island, Arctic Canada |
topic_facet |
General Earth and Planetary Sciences |
description |
More than 2000 line-kilometres of ice were sounded in 1981 using an 840 MHz pulsed radar system. The surveyed regions include Mt. Oxford ice cap, Disraeli Glacier, Milne Glacier, Ward Hunt Ice Shelf, and Milne Ice Shelf in northern Ellesmere Island, Arctic Canada. The maximum ice thickness that was reliably recorded was 750 m for Milne Glacier. In addition to ice thickness interpretation, the power reflection coefficient (PRC) and propagation loss rate were estimated from the data. Measured basal PRC's differ for ice shelves, floating glaciers, and grounded glaciers. Spatial variations of PRC have been used to infer a composite structure for the ice shelves. Ward Hunt Ice Shelf proved difficult to sound, probably because of its known saline and brackish chemistry. Excellent results were obtained for Milne Ice Shelf and its depth was found to average roughly 70 m, in places attaining 100 m. Bottom-side crevasses were observed within Milne Ice Shelf. The characteristic ridge and trough topography of the ice shelf surface has little or no bottom-side expression. |
format |
Article in Journal/Newspaper |
author |
Narod, B. Barry Clarke, Garry K. C. Prager, Bradley T. |
author_facet |
Narod, B. Barry Clarke, Garry K. C. Prager, Bradley T. |
author_sort |
Narod, B. Barry |
title |
Airborne UHF radar sounding of glaciers and ice shelves, northern Ellesmere Island, Arctic Canada |
title_short |
Airborne UHF radar sounding of glaciers and ice shelves, northern Ellesmere Island, Arctic Canada |
title_full |
Airborne UHF radar sounding of glaciers and ice shelves, northern Ellesmere Island, Arctic Canada |
title_fullStr |
Airborne UHF radar sounding of glaciers and ice shelves, northern Ellesmere Island, Arctic Canada |
title_full_unstemmed |
Airborne UHF radar sounding of glaciers and ice shelves, northern Ellesmere Island, Arctic Canada |
title_sort |
airborne uhf radar sounding of glaciers and ice shelves, northern ellesmere island, arctic canada |
publisher |
Canadian Science Publishing |
publishDate |
1988 |
url |
http://dx.doi.org/10.1139/e88-010 http://www.nrcresearchpress.com/doi/pdf/10.1139/e88-010 |
genre |
Arctic Ellesmere Island glacier* Ice cap Ice Shelf Ice Shelves Milne Ice Shelf Ward Hunt Ice Shelf |
genre_facet |
Arctic Ellesmere Island glacier* Ice cap Ice Shelf Ice Shelves Milne Ice Shelf Ward Hunt Ice Shelf |
op_source |
Canadian Journal of Earth Sciences volume 25, issue 1, page 95-105 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e88-010 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
25 |
container_issue |
1 |
container_start_page |
95 |
op_container_end_page |
105 |
_version_ |
1797577406069866496 |