Comparing satellite and helicopter-based methods for observing crevasses, application in East Antarctica
Knowing where crevasses are is critical for planning safe on-ice field operations. Previous methods have ranged from real-time imaging of subsurface structures using ground penetrating radar, to mapping of crevasses over large areas using satellite imagery, with each method having it's own stre...
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ftunivtasmania:oai:eprints.utas.edu.au:34024 2023-05-15T13:31:54+02:00 Comparing satellite and helicopter-based methods for observing crevasses, application in East Antarctica Thompson, SS Cook, S Kulessa, B Winberry, JP Fraser, AD Galton-Fenzi, BK 2020 application/pdf https://eprints.utas.edu.au/34024/ https://eprints.utas.edu.au/34024/1/139779%20-%20Comparing%20satellite%20and%20helicopter-based%20methods%20for%20observing%20crevasses,%20application.pdf en eng Elsevier Science Bv https://eprints.utas.edu.au/34024/1/139779%20-%20Comparing%20satellite%20and%20helicopter-based%20methods%20for%20observing%20crevasses,%20application.pdf Thompson, SS orcid:0000-0001-9112-6933 , Cook, S, Kulessa, B, Winberry, JP, Fraser, AD orcid:0000-0003-1924-0015 and Galton-Fenzi, BK 2020 , 'Comparing satellite and helicopter-based methods for observing crevasses, application in East Antarctica' , Cold Regions Science and Technology, vol. 178 , pp. 1-10 , doi:10.1016/j.coldregions.2020.103128 <http://dx.doi.org/10.1016/j.coldregions.2020.103128>. ground-penetrating radar Synthetic Aperture Radar (SAR) crevasses field safety Article PeerReviewed 2020 ftunivtasmania https://doi.org/10.1016/j.coldregions.2020.103128 2021-10-04T22:18:14Z Knowing where crevasses are is critical for planning safe on-ice field operations. Previous methods have ranged from real-time imaging of subsurface structures using ground penetrating radar, to mapping of crevasses over large areas using satellite imagery, with each method having it's own strengths and weaknesses. In this paper we compare the detection of crevasses at the Totten Glacier, East Antarctica, from helicopter-borne ground penetrating radar with satellite-based microwave synthetic aperture radar imagery. Our results show that the 80 MHz helicopter-borne ground penetrating radar was able to detect crevasses up to a depth of 70 m, with snow bridge thickness of >30 m. Comparison with TerraSAR-X (X-band, 9.6 GHz) satellite imagery indicates that the latter is highly effective, detecting 100% of crevasses with snow bridges of up to 4 m thick and detected 95% of crevasses with snow bridges up to 10 m thick. The ability of both methods to identify individual crevasses is affected by several factors including crevasse geometry, survey or satellite orientation and snow moisture content, and further experiments are planned to investigate performance under a wider range of conditions. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Totten Glacier University of Tasmania: UTas ePrints East Antarctica Totten Glacier ENVELOPE(116.333,116.333,-66.833,-66.833) Cold Regions Science and Technology 178 103128 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
ground-penetrating radar Synthetic Aperture Radar (SAR) crevasses field safety |
spellingShingle |
ground-penetrating radar Synthetic Aperture Radar (SAR) crevasses field safety Thompson, SS Cook, S Kulessa, B Winberry, JP Fraser, AD Galton-Fenzi, BK Comparing satellite and helicopter-based methods for observing crevasses, application in East Antarctica |
topic_facet |
ground-penetrating radar Synthetic Aperture Radar (SAR) crevasses field safety |
description |
Knowing where crevasses are is critical for planning safe on-ice field operations. Previous methods have ranged from real-time imaging of subsurface structures using ground penetrating radar, to mapping of crevasses over large areas using satellite imagery, with each method having it's own strengths and weaknesses. In this paper we compare the detection of crevasses at the Totten Glacier, East Antarctica, from helicopter-borne ground penetrating radar with satellite-based microwave synthetic aperture radar imagery. Our results show that the 80 MHz helicopter-borne ground penetrating radar was able to detect crevasses up to a depth of 70 m, with snow bridge thickness of >30 m. Comparison with TerraSAR-X (X-band, 9.6 GHz) satellite imagery indicates that the latter is highly effective, detecting 100% of crevasses with snow bridges of up to 4 m thick and detected 95% of crevasses with snow bridges up to 10 m thick. The ability of both methods to identify individual crevasses is affected by several factors including crevasse geometry, survey or satellite orientation and snow moisture content, and further experiments are planned to investigate performance under a wider range of conditions. |
format |
Article in Journal/Newspaper |
author |
Thompson, SS Cook, S Kulessa, B Winberry, JP Fraser, AD Galton-Fenzi, BK |
author_facet |
Thompson, SS Cook, S Kulessa, B Winberry, JP Fraser, AD Galton-Fenzi, BK |
author_sort |
Thompson, SS |
title |
Comparing satellite and helicopter-based methods for observing crevasses, application in East Antarctica |
title_short |
Comparing satellite and helicopter-based methods for observing crevasses, application in East Antarctica |
title_full |
Comparing satellite and helicopter-based methods for observing crevasses, application in East Antarctica |
title_fullStr |
Comparing satellite and helicopter-based methods for observing crevasses, application in East Antarctica |
title_full_unstemmed |
Comparing satellite and helicopter-based methods for observing crevasses, application in East Antarctica |
title_sort |
comparing satellite and helicopter-based methods for observing crevasses, application in east antarctica |
publisher |
Elsevier Science Bv |
publishDate |
2020 |
url |
https://eprints.utas.edu.au/34024/ https://eprints.utas.edu.au/34024/1/139779%20-%20Comparing%20satellite%20and%20helicopter-based%20methods%20for%20observing%20crevasses,%20application.pdf |
long_lat |
ENVELOPE(116.333,116.333,-66.833,-66.833) |
geographic |
East Antarctica Totten Glacier |
geographic_facet |
East Antarctica Totten Glacier |
genre |
Antarc* Antarctica East Antarctica Totten Glacier |
genre_facet |
Antarc* Antarctica East Antarctica Totten Glacier |
op_relation |
https://eprints.utas.edu.au/34024/1/139779%20-%20Comparing%20satellite%20and%20helicopter-based%20methods%20for%20observing%20crevasses,%20application.pdf Thompson, SS orcid:0000-0001-9112-6933 , Cook, S, Kulessa, B, Winberry, JP, Fraser, AD orcid:0000-0003-1924-0015 and Galton-Fenzi, BK 2020 , 'Comparing satellite and helicopter-based methods for observing crevasses, application in East Antarctica' , Cold Regions Science and Technology, vol. 178 , pp. 1-10 , doi:10.1016/j.coldregions.2020.103128 <http://dx.doi.org/10.1016/j.coldregions.2020.103128>. |
op_doi |
https://doi.org/10.1016/j.coldregions.2020.103128 |
container_title |
Cold Regions Science and Technology |
container_volume |
178 |
container_start_page |
103128 |
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1766022270561550336 |