Rapid demise and committed loss of Bowman Glacier, northern Ellesmere Island, Arctic Canada
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...
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Cambridge University Press
2023
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Online Access: | https://doi.org/10.1017/jog.2022.119 https://doaj.org/article/34e475ea3a7b41978e1ba30d3e30cc7c |
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ftdoajarticles:oai:doaj.org/article:34e475ea3a7b41978e1ba30d3e30cc7c 2023-08-20T04:04:01+02:00 Rapid demise and committed loss of Bowman Glacier, northern Ellesmere Island, Arctic Canada Dorota Medrzycka Luke Copland Brice Noël 2023-08-01T00:00:00Z https://doi.org/10.1017/jog.2022.119 https://doaj.org/article/34e475ea3a7b41978e1ba30d3e30cc7c EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143022001198/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2022.119 0022-1430 1727-5652 https://doaj.org/article/34e475ea3a7b41978e1ba30d3e30cc7c Journal of Glaciology, Vol 69, Pp 997-1010 (2023) Arctic glaciology glacier mass balance glacier volume Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2023 ftdoajarticles https://doi.org/10.1017/jog.2022.119 2023-07-30T00:36:44Z 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 Arctic Ellesmere Island glacier* Journal of Glaciology Directory of Open Access Journals: DOAJ Articles Arctic Bowman Glacier ENVELOPE(-162.000,-162.000,-85.567,-85.567) Canada Ellesmere Island Journal of Glaciology 1 14 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic glaciology glacier mass balance glacier volume Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Arctic glaciology glacier mass balance glacier volume Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Dorota Medrzycka Luke Copland Brice Noël Rapid demise and committed loss of Bowman Glacier, northern Ellesmere Island, Arctic Canada |
topic_facet |
Arctic glaciology glacier mass balance glacier volume Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
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 |
Dorota Medrzycka Luke Copland Brice Noël |
author_facet |
Dorota Medrzycka Luke Copland Brice Noël |
author_sort |
Dorota Medrzycka |
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 |
publishDate |
2023 |
url |
https://doi.org/10.1017/jog.2022.119 https://doaj.org/article/34e475ea3a7b41978e1ba30d3e30cc7c |
long_lat |
ENVELOPE(-162.000,-162.000,-85.567,-85.567) |
geographic |
Arctic Bowman Glacier Canada Ellesmere Island |
geographic_facet |
Arctic Bowman Glacier Canada Ellesmere Island |
genre |
Arctic Ellesmere Island glacier* Journal of Glaciology |
genre_facet |
Arctic Ellesmere Island glacier* Journal of Glaciology |
op_source |
Journal of Glaciology, Vol 69, Pp 997-1010 (2023) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143022001198/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2022.119 0022-1430 1727-5652 https://doaj.org/article/34e475ea3a7b41978e1ba30d3e30cc7c |
op_doi |
https://doi.org/10.1017/jog.2022.119 |
container_title |
Journal of Glaciology |
container_start_page |
1 |
op_container_end_page |
14 |
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1774714451924090880 |