Glacier area and length changes in Norway from repeat inventories
In this study, we assess glacier area and length changes in mainland Norway from repeat Landsat TM/ETM+-derived inventories and digitized topographic maps. The multi-temporal glacier inventory consists of glacier outlines from three time ranges: 1947 to 1985 (GI n50 ), 1988 to 1997 (GI 1990 ), and 1...
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ftdoajarticles:oai:doaj.org/article:8a566b7fc0fe4755ac48038693ed5475 2023-05-15T16:21:50+02:00 Glacier area and length changes in Norway from repeat inventories S. H. Winsvold L. M. Andreassen C. Kienholz 2014-10-01T00:00:00Z https://doi.org/10.5194/tc-8-1885-2014 https://doaj.org/article/8a566b7fc0fe4755ac48038693ed5475 EN eng Copernicus Publications http://www.the-cryosphere.net/8/1885/2014/tc-8-1885-2014.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-8-1885-2014 https://doaj.org/article/8a566b7fc0fe4755ac48038693ed5475 The Cryosphere, Vol 8, Iss 5, Pp 1885-1903 (2014) Environmental sciences GE1-350 Geology QE1-996.5 article 2014 ftdoajarticles https://doi.org/10.5194/tc-8-1885-2014 2022-12-31T15:38:02Z In this study, we assess glacier area and length changes in mainland Norway from repeat Landsat TM/ETM+-derived inventories and digitized topographic maps. The multi-temporal glacier inventory consists of glacier outlines from three time ranges: 1947 to 1985 (GI n50 ), 1988 to 1997 (GI 1990 ), and 1999 to 2006 (GI 2000 ). For the northernmost regions, we include an additional inventory (GI 1900 ) based on historic maps surveyed between 1895 and 1907. Area and length changes are assessed per glacier unit, 36 subregions, and for three main parts of Norway: southern, central, and northern. The results show a decrease in the glacierized area from 2994 km 2 in GI n50 to 2668 km 2 in GI 2000 (total 2722 glacier units), corresponding to an area reduction of −326 km 2 , or −11% of the initial GI n50 area. The average length change for the full epoch (within GI n50 and GI 2000 ) is −240 m. Overall, the comparison reveals both area and length reductions as general patterns, even though some glaciers have advanced. The three northernmost subregions show the highest retreat rates, whereas the central part of Norway shows the lowest change rates. Glacier area and length changes indicate that glaciers in maritime areas in southern Norway have retreated more than glaciers in the interior, and glaciers in the north have retreated more than southern glaciers. These observed spatial trends in glacier change are related to a combination of several factors such as glacier geometry, elevation, and continentality, especially in southern Norway. Article in Journal/Newspaper glacier The Cryosphere Directory of Open Access Journals: DOAJ Articles Norway The Cryosphere 8 5 1885 1903 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 S. H. Winsvold L. M. Andreassen C. Kienholz Glacier area and length changes in Norway from repeat inventories |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
In this study, we assess glacier area and length changes in mainland Norway from repeat Landsat TM/ETM+-derived inventories and digitized topographic maps. The multi-temporal glacier inventory consists of glacier outlines from three time ranges: 1947 to 1985 (GI n50 ), 1988 to 1997 (GI 1990 ), and 1999 to 2006 (GI 2000 ). For the northernmost regions, we include an additional inventory (GI 1900 ) based on historic maps surveyed between 1895 and 1907. Area and length changes are assessed per glacier unit, 36 subregions, and for three main parts of Norway: southern, central, and northern. The results show a decrease in the glacierized area from 2994 km 2 in GI n50 to 2668 km 2 in GI 2000 (total 2722 glacier units), corresponding to an area reduction of −326 km 2 , or −11% of the initial GI n50 area. The average length change for the full epoch (within GI n50 and GI 2000 ) is −240 m. Overall, the comparison reveals both area and length reductions as general patterns, even though some glaciers have advanced. The three northernmost subregions show the highest retreat rates, whereas the central part of Norway shows the lowest change rates. Glacier area and length changes indicate that glaciers in maritime areas in southern Norway have retreated more than glaciers in the interior, and glaciers in the north have retreated more than southern glaciers. These observed spatial trends in glacier change are related to a combination of several factors such as glacier geometry, elevation, and continentality, especially in southern Norway. |
format |
Article in Journal/Newspaper |
author |
S. H. Winsvold L. M. Andreassen C. Kienholz |
author_facet |
S. H. Winsvold L. M. Andreassen C. Kienholz |
author_sort |
S. H. Winsvold |
title |
Glacier area and length changes in Norway from repeat inventories |
title_short |
Glacier area and length changes in Norway from repeat inventories |
title_full |
Glacier area and length changes in Norway from repeat inventories |
title_fullStr |
Glacier area and length changes in Norway from repeat inventories |
title_full_unstemmed |
Glacier area and length changes in Norway from repeat inventories |
title_sort |
glacier area and length changes in norway from repeat inventories |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/tc-8-1885-2014 https://doaj.org/article/8a566b7fc0fe4755ac48038693ed5475 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
glacier The Cryosphere |
genre_facet |
glacier The Cryosphere |
op_source |
The Cryosphere, Vol 8, Iss 5, Pp 1885-1903 (2014) |
op_relation |
http://www.the-cryosphere.net/8/1885/2014/tc-8-1885-2014.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-8-1885-2014 https://doaj.org/article/8a566b7fc0fe4755ac48038693ed5475 |
op_doi |
https://doi.org/10.5194/tc-8-1885-2014 |
container_title |
The Cryosphere |
container_volume |
8 |
container_issue |
5 |
container_start_page |
1885 |
op_container_end_page |
1903 |
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1766009808230547456 |