Timing of Little Ice Age maxima and subsequent glacier retreat in northern Troms and western Finnmark, northern Norway
Glaciers are important indicators of climate change, and recent observations worldwide document increasing rates of mountain glacier recession. Here we present approximately 200 years of change in mountain glacier extent in northern Troms and western Finnmark, northern Norway. This was achieved thro...
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2020
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Online Access: | https://doi.org/10.1080/15230430.2020.1765520 https://doaj.org/article/b440cf6d994e4b3fafa96df6a2457682 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:b440cf6d994e4b3fafa96df6a2457682 2023-05-15T14:14:23+02:00 Timing of Little Ice Age maxima and subsequent glacier retreat in northern Troms and western Finnmark, northern Norway J. R. Leigh C. R. Stokes D. J. A. Evans R. J. Carr L. M. Andreassen 2020-01-01 https://doi.org/10.1080/15230430.2020.1765520 https://doaj.org/article/b440cf6d994e4b3fafa96df6a2457682 en eng Taylor & Francis Group 1523-0430 1938-4246 doi:10.1080/15230430.2020.1765520 https://doaj.org/article/b440cf6d994e4b3fafa96df6a2457682 undefined Arctic, Antarctic, and Alpine Research, Vol 52, Iss 1, Pp 281-311 (2020) glacier change remote sensing lichenometry ‘little ice age’ northern norway geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2020 fttriple https://doi.org/10.1080/15230430.2020.1765520 2023-01-22T18:31:37Z Glaciers are important indicators of climate change, and recent observations worldwide document increasing rates of mountain glacier recession. Here we present approximately 200 years of change in mountain glacier extent in northern Troms and western Finnmark, northern Norway. This was achieved through (1) mapping and lichenometric dating of major moraine systems within a subset of the main study area (the Rotsund Valley) and (2) mapping recent (post-1980s) changes in ice extent from remotely sensed data. Lichenometric dating reveals that the Little Ice Age (LIA) maximum occurred approximately 1814 (±41 years), which is before the early twentieth-century LIA maximum proposed on the nearby Lyngen Peninsula but younger than LIA maximum limits in southern and central Norway (mid-eighteenth century). Between LIA maximum and 1989, a small sample of measured glaciers (n = 15) shrank a total of 3.9 km2 (39 percent), and those that shrank by more than 50 percent are fronted by proglacial lakes. Between 1989 and 2018, the total area of glaciers within the study area (n = 219 in 1989) shrank by approximately 35 km2. Very small glaciers (<0.5 km2) show the highest relative rates of shrinkage, and 90 percent of mapped glaciers within the study area were less than 0.5 km2 in 2018. Article in Journal/Newspaper Antarctic and Alpine Research Arctic Finnmark glacier Lyngen Northern Norway Finnmark Lyngen Troms Unknown Norway Rotsund ENVELOPE(20.590,20.590,69.778,69.778) Arctic, Antarctic, and Alpine Research 52 1 281 311 |
institution |
Open Polar |
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Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
glacier change remote sensing lichenometry ‘little ice age’ northern norway geo envir |
spellingShingle |
glacier change remote sensing lichenometry ‘little ice age’ northern norway geo envir J. R. Leigh C. R. Stokes D. J. A. Evans R. J. Carr L. M. Andreassen Timing of Little Ice Age maxima and subsequent glacier retreat in northern Troms and western Finnmark, northern Norway |
topic_facet |
glacier change remote sensing lichenometry ‘little ice age’ northern norway geo envir |
description |
Glaciers are important indicators of climate change, and recent observations worldwide document increasing rates of mountain glacier recession. Here we present approximately 200 years of change in mountain glacier extent in northern Troms and western Finnmark, northern Norway. This was achieved through (1) mapping and lichenometric dating of major moraine systems within a subset of the main study area (the Rotsund Valley) and (2) mapping recent (post-1980s) changes in ice extent from remotely sensed data. Lichenometric dating reveals that the Little Ice Age (LIA) maximum occurred approximately 1814 (±41 years), which is before the early twentieth-century LIA maximum proposed on the nearby Lyngen Peninsula but younger than LIA maximum limits in southern and central Norway (mid-eighteenth century). Between LIA maximum and 1989, a small sample of measured glaciers (n = 15) shrank a total of 3.9 km2 (39 percent), and those that shrank by more than 50 percent are fronted by proglacial lakes. Between 1989 and 2018, the total area of glaciers within the study area (n = 219 in 1989) shrank by approximately 35 km2. Very small glaciers (<0.5 km2) show the highest relative rates of shrinkage, and 90 percent of mapped glaciers within the study area were less than 0.5 km2 in 2018. |
format |
Article in Journal/Newspaper |
author |
J. R. Leigh C. R. Stokes D. J. A. Evans R. J. Carr L. M. Andreassen |
author_facet |
J. R. Leigh C. R. Stokes D. J. A. Evans R. J. Carr L. M. Andreassen |
author_sort |
J. R. Leigh |
title |
Timing of Little Ice Age maxima and subsequent glacier retreat in northern Troms and western Finnmark, northern Norway |
title_short |
Timing of Little Ice Age maxima and subsequent glacier retreat in northern Troms and western Finnmark, northern Norway |
title_full |
Timing of Little Ice Age maxima and subsequent glacier retreat in northern Troms and western Finnmark, northern Norway |
title_fullStr |
Timing of Little Ice Age maxima and subsequent glacier retreat in northern Troms and western Finnmark, northern Norway |
title_full_unstemmed |
Timing of Little Ice Age maxima and subsequent glacier retreat in northern Troms and western Finnmark, northern Norway |
title_sort |
timing of little ice age maxima and subsequent glacier retreat in northern troms and western finnmark, northern norway |
publisher |
Taylor & Francis Group |
publishDate |
2020 |
url |
https://doi.org/10.1080/15230430.2020.1765520 https://doaj.org/article/b440cf6d994e4b3fafa96df6a2457682 |
long_lat |
ENVELOPE(20.590,20.590,69.778,69.778) |
geographic |
Norway Rotsund |
geographic_facet |
Norway Rotsund |
genre |
Antarctic and Alpine Research Arctic Finnmark glacier Lyngen Northern Norway Finnmark Lyngen Troms |
genre_facet |
Antarctic and Alpine Research Arctic Finnmark glacier Lyngen Northern Norway Finnmark Lyngen Troms |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 52, Iss 1, Pp 281-311 (2020) |
op_relation |
1523-0430 1938-4246 doi:10.1080/15230430.2020.1765520 https://doaj.org/article/b440cf6d994e4b3fafa96df6a2457682 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1080/15230430.2020.1765520 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
52 |
container_issue |
1 |
container_start_page |
281 |
op_container_end_page |
311 |
_version_ |
1766286873012994048 |