Rapid demise and committed loss of Bowman Glacier, northern Ellesmere Island, Arctic Canada
peer reviewed Using historical and recent aerial photography and structure from motion (SfM) multiview stereo (MVS) techniques, we reconstruct the 1959 and 2018 ice surface topography and determine the geodetic mass balance of Bowman Glacier, a small mountain glacier on northern Ellesmere Island. Th...
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Language: | English |
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Cambridge University Press (CUP)
2023
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Online Access: | https://orbi.uliege.be/handle/2268/302205 https://orbi.uliege.be/bitstream/2268/302205/1/Medrzycka_2023_JoG.pdf https://doi.org/10.1017/jog.2022.119 |
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ftorbi:oai:orbi.ulg.ac.be:2268/302205 2024-04-21T08:01:31+00:00 Rapid demise and committed loss of Bowman Glacier, northern Ellesmere Island, Arctic Canada Medrzycka, Dorota Copland, Luke Noël, Brice 2023-01-27 https://orbi.uliege.be/handle/2268/302205 https://orbi.uliege.be/bitstream/2268/302205/1/Medrzycka_2023_JoG.pdf https://doi.org/10.1017/jog.2022.119 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143022001198 urn:issn:0022-1430 urn:issn:1727-5652 https://orbi.uliege.be/handle/2268/302205 info:hdl:2268/302205 https://orbi.uliege.be/bitstream/2268/302205/1/Medrzycka_2023_JoG.pdf doi:10.1017/jog.2022.119 scopus-id:2-s2.0-85167686745 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Journal of Glaciology, 1-14 (2023-01-27) 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 2023 ftorbi https://doi.org/10.1017/jog.2022.119 2024-03-27T14:58:35Z peer reviewed Using historical and recent aerial photography and structure from motion (SfM) multiview stereo (MVS) techniques, we reconstruct the 1959 and 2018 ice surface topography and determine the geodetic mass balance of Bowman Glacier, a small mountain glacier on northern Ellesmere Island. This is combined with optical satellite imagery to reconstruct the evolution in extent of the glacier over six decades, and ground-penetrating radar measurements of ice thickness to estimate the remaining ice volume. Between 1959 and 2020, Bowman Glacier lost 78% of its extent (reducing from 2.75 to 0.61 km2), while average annual area loss rates have nearly tripled in the past two decades. Over the 1959–2018 period, glacier-wide ice-thickness change averaged −22.7 ± 4.7 m, corresponding to a mean specific annual mass balance of −347.0 ± 71.4 mm w.e. a−1. Projecting rates of area and volume change into the future indicates that the glacier will likely entirely disappear between 2030 and 2060. This study demonstrates the potential of SfM-MVS processing to generate elevation products from 1950/60s historical aerial photographs, and to extend observations of ice elevation and glacier volume change for the Canadian Arctic, prior to the satellite record. Article in Journal/Newspaper Ellesmere Island glacier* Journal of Glaciology University of Liège: ORBi (Open Repository and Bibliography) Journal of Glaciology 69 276 997 1010 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
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 |
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 Medrzycka, Dorota Copland, Luke Noël, Brice Rapid demise and committed loss of Bowman Glacier, northern Ellesmere Island, Arctic Canada |
topic_facet |
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 Using historical and recent aerial photography and structure from motion (SfM) multiview stereo (MVS) techniques, we reconstruct the 1959 and 2018 ice surface topography and determine the geodetic mass balance of Bowman Glacier, a small mountain glacier on northern Ellesmere Island. This is combined with optical satellite imagery to reconstruct the evolution in extent of the glacier over six decades, and ground-penetrating radar measurements of ice thickness to estimate the remaining ice volume. Between 1959 and 2020, Bowman Glacier lost 78% of its extent (reducing from 2.75 to 0.61 km2), while average annual area loss rates have nearly tripled in the past two decades. Over the 1959–2018 period, glacier-wide ice-thickness change averaged −22.7 ± 4.7 m, corresponding to a mean specific annual mass balance of −347.0 ± 71.4 mm w.e. a−1. Projecting rates of area and volume change into the future indicates that the glacier will likely entirely disappear between 2030 and 2060. This study demonstrates the potential of SfM-MVS processing to generate elevation products from 1950/60s historical aerial photographs, and to extend observations of ice elevation and glacier volume change for the Canadian Arctic, prior to the satellite record. |
format |
Article in Journal/Newspaper |
author |
Medrzycka, Dorota Copland, Luke Noël, Brice |
author_facet |
Medrzycka, Dorota Copland, Luke Noël, Brice |
author_sort |
Medrzycka, Dorota |
title |
Rapid demise and committed loss of Bowman Glacier, northern Ellesmere Island, Arctic Canada |
title_short |
Rapid demise and committed loss of Bowman Glacier, northern Ellesmere Island, Arctic Canada |
title_full |
Rapid demise and committed loss of Bowman Glacier, northern Ellesmere Island, Arctic Canada |
title_fullStr |
Rapid demise and committed loss of Bowman Glacier, northern Ellesmere Island, Arctic Canada |
title_full_unstemmed |
Rapid demise and committed loss of Bowman Glacier, northern Ellesmere Island, Arctic Canada |
title_sort |
rapid demise and committed loss of bowman glacier, northern ellesmere island, arctic canada |
publisher |
Cambridge University Press (CUP) |
publishDate |
2023 |
url |
https://orbi.uliege.be/handle/2268/302205 https://orbi.uliege.be/bitstream/2268/302205/1/Medrzycka_2023_JoG.pdf https://doi.org/10.1017/jog.2022.119 |
genre |
Ellesmere Island glacier* Journal of Glaciology |
genre_facet |
Ellesmere Island glacier* Journal of Glaciology |
op_source |
Journal of Glaciology, 1-14 (2023-01-27) |
op_relation |
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143022001198 urn:issn:0022-1430 urn:issn:1727-5652 https://orbi.uliege.be/handle/2268/302205 info:hdl:2268/302205 https://orbi.uliege.be/bitstream/2268/302205/1/Medrzycka_2023_JoG.pdf doi:10.1017/jog.2022.119 scopus-id:2-s2.0-85167686745 |
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.2022.119 |
container_title |
Journal of Glaciology |
container_volume |
69 |
container_issue |
276 |
container_start_page |
997 |
op_container_end_page |
1010 |
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1796941664587087872 |