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...
Published in: | Arctic, Antarctic, and Alpine Research |
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Online Access: | http://dro.dur.ac.uk/31277/ http://dro.dur.ac.uk/31277/1/31277.pdf https://doi.org/10.1080/15230430.2020.1765520 |
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ftunivdurham:oai:dro.dur.ac.uk.OAI2:31277 2023-05-15T14:14:34+02:00 Timing of Little Ice Age maxima and subsequent glacier retreat in northern Troms and western Finnmark, northern Norway. Leigh, J. R. Stokes, C. R. Evans, D. J. A. Carr, R. J. Andreassen, L. M. 2020 application/pdf http://dro.dur.ac.uk/31277/ http://dro.dur.ac.uk/31277/1/31277.pdf https://doi.org/10.1080/15230430.2020.1765520 unknown Taylor & Francis dro:31277 issn:1523-0430 issn: 1938-4246 doi:10.1080/15230430.2020.1765520 http://dro.dur.ac.uk/31277/ https://doi.org/10.1080/15230430.2020.1765520 http://dro.dur.ac.uk/31277/1/31277.pdf © 2020 The Author(s). Published with license by Taylor & Francis Group, LLC. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. CC-BY Arctic, Antarctic, and Alpine research, 2020, Vol.52(1), pp.281-311 [Peer Reviewed Journal] Article PeerReviewed 2020 ftunivdurham https://doi.org/10.1080/15230430.2020.1765520 2020-07-16T22:22:28Z 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 Durham University: Durham Research Online Norway Rotsund ENVELOPE(20.590,20.590,69.778,69.778) Arctic, Antarctic, and Alpine Research 52 1 281 311 |
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Open Polar |
collection |
Durham University: Durham Research Online |
op_collection_id |
ftunivdurham |
language |
unknown |
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 |
Leigh, J. R. Stokes, C. R. Evans, D. J. A. Carr, R. J. Andreassen, L. M. |
spellingShingle |
Leigh, J. R. Stokes, C. R. Evans, D. J. A. Carr, R. J. Andreassen, L. M. Timing of Little Ice Age maxima and subsequent glacier retreat in northern Troms and western Finnmark, northern Norway. |
author_facet |
Leigh, J. R. Stokes, C. R. Evans, D. J. A. Carr, R. J. Andreassen, L. M. |
author_sort |
Leigh, J. R. |
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 |
publishDate |
2020 |
url |
http://dro.dur.ac.uk/31277/ http://dro.dur.ac.uk/31277/1/31277.pdf https://doi.org/10.1080/15230430.2020.1765520 |
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, 2020, Vol.52(1), pp.281-311 [Peer Reviewed Journal] |
op_relation |
dro:31277 issn:1523-0430 issn: 1938-4246 doi:10.1080/15230430.2020.1765520 http://dro.dur.ac.uk/31277/ https://doi.org/10.1080/15230430.2020.1765520 http://dro.dur.ac.uk/31277/1/31277.pdf |
op_rights |
© 2020 The Author(s). Published with license by Taylor & Francis Group, LLC. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
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_ |
1766286967201333248 |