Glacier change in the Cariboo Mountains, British Columbia, Canada (1952–2005)
We applied photogrammetric methods with aerial photography from 11 different years between 1946 and 2005 to assess changes in area and volume of 33 glaciers in the Cariboo Mountains of British Columbia for the latter half of the 20th century. These are used to identify changes in extent and elevatio...
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fttriple:oai:gotriple.eu:oai:doaj.org/article:c58e029a977e400c99028296d3b3ec90 2023-05-15T18:32:21+02:00 Glacier change in the Cariboo Mountains, British Columbia, Canada (1952–2005) M. J. Beedle B. Menounos R. Wheate 2015-01-01 https://doi.org/10.5194/tc-9-65-2015 http://www.the-cryosphere.net/9/65/2015/tc-9-65-2015.pdf https://doaj.org/article/c58e029a977e400c99028296d3b3ec90 en eng Copernicus Publications 1994-0416 1994-0424 doi:10.5194/tc-9-65-2015 http://www.the-cryosphere.net/9/65/2015/tc-9-65-2015.pdf https://doaj.org/article/c58e029a977e400c99028296d3b3ec90 undefined The Cryosphere, Vol 9, Iss 1, Pp 65-80 (2015) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2015 fttriple https://doi.org/10.5194/tc-9-65-2015 2023-01-22T18:19:42Z We applied photogrammetric methods with aerial photography from 11 different years between 1946 and 2005 to assess changes in area and volume of 33 glaciers in the Cariboo Mountains of British Columbia for the latter half of the 20th century. These are used to identify changes in extent and elevation primarily for the periods 1952–1985, 1985–2005, and 1952–2005. All glaciers receded during the period 1952–2005; area retreat averaged −0.19 ± 0.05 % a−1. From 1952 to 1985, nine glaciers advanced; following 1985, retreat rates accelerated to −0.41 ± 0.12% a−1. Thinning rates of a subset of seven glaciers likewise accelerated, from −0.14 ± 0.04 m w.e. a−1 (1952–1985) to −0.50 ± 0.07 m w.e. a−1 for the period 1985–2005. Temperatures increased from the earlier to the latter period for the ablation (+0.38 °C) and accumulation (+0.87 °C) seasons, and average precipitation decreased, particularly in the accumulation season (−32 mm, −3.2%). Our comparison of surface area change with glacier morphometry corroborates previous studies that show primary relations between extent change and surface area. We also find that the strength and sign of these relations varied for different epochs. Our results also indicate that the 1985 glacier extent for the study area reported previously by other studies may be slightly overestimated due to errant mapping of late-lying snow cover. Article in Journal/Newspaper The Cryosphere Unknown British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Canada The Cryosphere 9 1 65 80 |
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English |
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geo envir |
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geo envir M. J. Beedle B. Menounos R. Wheate Glacier change in the Cariboo Mountains, British Columbia, Canada (1952–2005) |
topic_facet |
geo envir |
description |
We applied photogrammetric methods with aerial photography from 11 different years between 1946 and 2005 to assess changes in area and volume of 33 glaciers in the Cariboo Mountains of British Columbia for the latter half of the 20th century. These are used to identify changes in extent and elevation primarily for the periods 1952–1985, 1985–2005, and 1952–2005. All glaciers receded during the period 1952–2005; area retreat averaged −0.19 ± 0.05 % a−1. From 1952 to 1985, nine glaciers advanced; following 1985, retreat rates accelerated to −0.41 ± 0.12% a−1. Thinning rates of a subset of seven glaciers likewise accelerated, from −0.14 ± 0.04 m w.e. a−1 (1952–1985) to −0.50 ± 0.07 m w.e. a−1 for the period 1985–2005. Temperatures increased from the earlier to the latter period for the ablation (+0.38 °C) and accumulation (+0.87 °C) seasons, and average precipitation decreased, particularly in the accumulation season (−32 mm, −3.2%). Our comparison of surface area change with glacier morphometry corroborates previous studies that show primary relations between extent change and surface area. We also find that the strength and sign of these relations varied for different epochs. Our results also indicate that the 1985 glacier extent for the study area reported previously by other studies may be slightly overestimated due to errant mapping of late-lying snow cover. |
format |
Article in Journal/Newspaper |
author |
M. J. Beedle B. Menounos R. Wheate |
author_facet |
M. J. Beedle B. Menounos R. Wheate |
author_sort |
M. J. Beedle |
title |
Glacier change in the Cariboo Mountains, British Columbia, Canada (1952–2005) |
title_short |
Glacier change in the Cariboo Mountains, British Columbia, Canada (1952–2005) |
title_full |
Glacier change in the Cariboo Mountains, British Columbia, Canada (1952–2005) |
title_fullStr |
Glacier change in the Cariboo Mountains, British Columbia, Canada (1952–2005) |
title_full_unstemmed |
Glacier change in the Cariboo Mountains, British Columbia, Canada (1952–2005) |
title_sort |
glacier change in the cariboo mountains, british columbia, canada (1952–2005) |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/tc-9-65-2015 http://www.the-cryosphere.net/9/65/2015/tc-9-65-2015.pdf https://doaj.org/article/c58e029a977e400c99028296d3b3ec90 |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) |
geographic |
British Columbia Canada |
geographic_facet |
British Columbia Canada |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
The Cryosphere, Vol 9, Iss 1, Pp 65-80 (2015) |
op_relation |
1994-0416 1994-0424 doi:10.5194/tc-9-65-2015 http://www.the-cryosphere.net/9/65/2015/tc-9-65-2015.pdf https://doaj.org/article/c58e029a977e400c99028296d3b3ec90 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-9-65-2015 |
container_title |
The Cryosphere |
container_volume |
9 |
container_issue |
1 |
container_start_page |
65 |
op_container_end_page |
80 |
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1766216454613499904 |