Greenland ice-sheet wide glacier classification based on two distinct seasonal ice velocity behaviors
peer reviewed Greenland glaciers exhibit variable seasonal velocity signals that may reflect differences in subglacial hydrology. Here, we conduct a first GrIS-wide glacier classification based on seasonal velocity patterns derived from 2017 Sentinel-1 radar data. Our classification focuses on two d...
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Cambridge University Press
2021
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Online Access: | https://orbi.uliege.be/handle/2268/301947 https://orbi.uliege.be/bitstream/2268/301947/1/Vijay_2021_JoG.pdf https://doi.org/10.1017/jog.2021.89 |
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ftorbi:oai:orbi.ulg.ac.be:2268/301947 2024-04-21T08:02:26+00:00 Greenland ice-sheet wide glacier classification based on two distinct seasonal ice velocity behaviors Vijay, Saurabh King, Michalea D. Howat, Ian M. Solgaard, Anne M. Khan, Shfaqat Abbas Noël, Brice 2021-12-03 https://orbi.uliege.be/handle/2268/301947 https://orbi.uliege.be/bitstream/2268/301947/1/Vijay_2021_JoG.pdf https://doi.org/10.1017/jog.2021.89 en eng Cambridge University Press https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143021000897 urn:issn:0022-1430 urn:issn:1727-5652 https://orbi.uliege.be/handle/2268/301947 info:hdl:2268/301947 https://orbi.uliege.be/bitstream/2268/301947/1/Vijay_2021_JoG.pdf doi:10.1017/jog.2021.89 scopus-id:2-s2.0-85112074692 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Journal of Glaciology, 67 (266), 1241 - 1248 (2021-12-03) Glacier fluctuations ice dynamics ice velocity ice/atmosphere interactions remote sensing Earth-Surface Processes Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2021 ftorbi https://doi.org/10.1017/jog.2021.89 2024-03-27T14:57:53Z peer reviewed Greenland glaciers exhibit variable seasonal velocity signals that may reflect differences in subglacial hydrology. Here, we conduct a first GrIS-wide glacier classification based on seasonal velocity patterns derived from 2017 Sentinel-1 radar data. Our classification focuses on two distinct seasonal ice velocity patterns, with the first (type-2 from Moon and others, 2014) showing periods of both speedup and slowdown during the melt season, and the second (type-3) instead showing a longer period of slowdown from elevated velocities in the winter and spring. We analyze 221 glaciers in 2017 and show that 48 exhibit type-2 behavior, and 72 exhibit type-3 behavior. We extend the classification to 2018 and 2019 and find that while the glaciers meeting each criterion vary year to year, type-2 is consistently more common in the northern regions and type-3 is more common in the south. Our results highlight the varied impact of meltwater on subglacial drainage systems and glacier flow in Greenland. Article in Journal/Newspaper glacier Greenland Ice Sheet Journal of Glaciology University of Liège: ORBi (Open Repository and Bibliography) Journal of Glaciology 67 266 1241 1248 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Glacier fluctuations ice dynamics ice velocity ice/atmosphere interactions remote sensing Earth-Surface Processes Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Glacier fluctuations ice dynamics ice velocity ice/atmosphere interactions remote sensing Earth-Surface Processes Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Vijay, Saurabh King, Michalea D. Howat, Ian M. Solgaard, Anne M. Khan, Shfaqat Abbas Noël, Brice Greenland ice-sheet wide glacier classification based on two distinct seasonal ice velocity behaviors |
topic_facet |
Glacier fluctuations ice dynamics ice velocity ice/atmosphere interactions remote sensing Earth-Surface Processes Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed Greenland glaciers exhibit variable seasonal velocity signals that may reflect differences in subglacial hydrology. Here, we conduct a first GrIS-wide glacier classification based on seasonal velocity patterns derived from 2017 Sentinel-1 radar data. Our classification focuses on two distinct seasonal ice velocity patterns, with the first (type-2 from Moon and others, 2014) showing periods of both speedup and slowdown during the melt season, and the second (type-3) instead showing a longer period of slowdown from elevated velocities in the winter and spring. We analyze 221 glaciers in 2017 and show that 48 exhibit type-2 behavior, and 72 exhibit type-3 behavior. We extend the classification to 2018 and 2019 and find that while the glaciers meeting each criterion vary year to year, type-2 is consistently more common in the northern regions and type-3 is more common in the south. Our results highlight the varied impact of meltwater on subglacial drainage systems and glacier flow in Greenland. |
format |
Article in Journal/Newspaper |
author |
Vijay, Saurabh King, Michalea D. Howat, Ian M. Solgaard, Anne M. Khan, Shfaqat Abbas Noël, Brice |
author_facet |
Vijay, Saurabh King, Michalea D. Howat, Ian M. Solgaard, Anne M. Khan, Shfaqat Abbas Noël, Brice |
author_sort |
Vijay, Saurabh |
title |
Greenland ice-sheet wide glacier classification based on two distinct seasonal ice velocity behaviors |
title_short |
Greenland ice-sheet wide glacier classification based on two distinct seasonal ice velocity behaviors |
title_full |
Greenland ice-sheet wide glacier classification based on two distinct seasonal ice velocity behaviors |
title_fullStr |
Greenland ice-sheet wide glacier classification based on two distinct seasonal ice velocity behaviors |
title_full_unstemmed |
Greenland ice-sheet wide glacier classification based on two distinct seasonal ice velocity behaviors |
title_sort |
greenland ice-sheet wide glacier classification based on two distinct seasonal ice velocity behaviors |
publisher |
Cambridge University Press |
publishDate |
2021 |
url |
https://orbi.uliege.be/handle/2268/301947 https://orbi.uliege.be/bitstream/2268/301947/1/Vijay_2021_JoG.pdf https://doi.org/10.1017/jog.2021.89 |
genre |
glacier Greenland Ice Sheet Journal of Glaciology |
genre_facet |
glacier Greenland Ice Sheet Journal of Glaciology |
op_source |
Journal of Glaciology, 67 (266), 1241 - 1248 (2021-12-03) |
op_relation |
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143021000897 urn:issn:0022-1430 urn:issn:1727-5652 https://orbi.uliege.be/handle/2268/301947 info:hdl:2268/301947 https://orbi.uliege.be/bitstream/2268/301947/1/Vijay_2021_JoG.pdf doi:10.1017/jog.2021.89 scopus-id:2-s2.0-85112074692 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1017/jog.2021.89 |
container_title |
Journal of Glaciology |
container_volume |
67 |
container_issue |
266 |
container_start_page |
1241 |
op_container_end_page |
1248 |
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1796942624766033920 |