Topographic control of equilibrium-line altitude depression on reconstructed 'Little Ice Age' glaciers, Grovabreen, western Norway
'Little Ice Age' marginal moraines in the Grovabreen area, inner Sunnfjord, are mapped and described. The modem and 'Little Ice Age' (mid-eighteenth century) equilibrium-line altitude (ELA) of the plateau glacier Grovabreen is calculated by the use of an accumulation-area ratio (...
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Online Access: | http://dx.doi.org/10.1177/095968369600600110 http://journals.sagepub.com/doi/pdf/10.1177/095968369600600110 |
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crsagepubl:10.1177/095968369600600110 2024-04-28T08:20:11+00:00 Topographic control of equilibrium-line altitude depression on reconstructed 'Little Ice Age' glaciers, Grovabreen, western Norway Aa, Asbjørn Rune 1996 http://dx.doi.org/10.1177/095968369600600110 http://journals.sagepub.com/doi/pdf/10.1177/095968369600600110 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 6, issue 1, page 82-89 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 1996 crsagepubl https://doi.org/10.1177/095968369600600110 2024-04-09T08:00:37Z 'Little Ice Age' marginal moraines in the Grovabreen area, inner Sunnfjord, are mapped and described. The modem and 'Little Ice Age' (mid-eighteenth century) equilibrium-line altitude (ELA) of the plateau glacier Grovabreen is calculated by the use of an accumulation-area ratio (AAR) of 0.6, giving a 'Little Ice Age' ELA depression of 125 m. AAR-ELA depression of the 'Little Ice Age' glaciers is also calculated for northern and southern outlet glaciers. Different estimates are considered to be the result of topographic differences. Other methods, such as the mean elevation of glaciers (MEG) and the toe-to-headwall altitude ratio (THAR), gave ELA depressions of 260 m and 315 m, respectively. These differences, due to topographic conditions, indicate that only glaciers with a uniform slope should be used to calculate the regional ELA of former glaciers. Article in Journal/Newspaper glacier SAGE Publications The Holocene 6 1 82 89 |
institution |
Open Polar |
collection |
SAGE Publications |
op_collection_id |
crsagepubl |
language |
English |
topic |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
spellingShingle |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change Aa, Asbjørn Rune Topographic control of equilibrium-line altitude depression on reconstructed 'Little Ice Age' glaciers, Grovabreen, western Norway |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
description |
'Little Ice Age' marginal moraines in the Grovabreen area, inner Sunnfjord, are mapped and described. The modem and 'Little Ice Age' (mid-eighteenth century) equilibrium-line altitude (ELA) of the plateau glacier Grovabreen is calculated by the use of an accumulation-area ratio (AAR) of 0.6, giving a 'Little Ice Age' ELA depression of 125 m. AAR-ELA depression of the 'Little Ice Age' glaciers is also calculated for northern and southern outlet glaciers. Different estimates are considered to be the result of topographic differences. Other methods, such as the mean elevation of glaciers (MEG) and the toe-to-headwall altitude ratio (THAR), gave ELA depressions of 260 m and 315 m, respectively. These differences, due to topographic conditions, indicate that only glaciers with a uniform slope should be used to calculate the regional ELA of former glaciers. |
format |
Article in Journal/Newspaper |
author |
Aa, Asbjørn Rune |
author_facet |
Aa, Asbjørn Rune |
author_sort |
Aa, Asbjørn Rune |
title |
Topographic control of equilibrium-line altitude depression on reconstructed 'Little Ice Age' glaciers, Grovabreen, western Norway |
title_short |
Topographic control of equilibrium-line altitude depression on reconstructed 'Little Ice Age' glaciers, Grovabreen, western Norway |
title_full |
Topographic control of equilibrium-line altitude depression on reconstructed 'Little Ice Age' glaciers, Grovabreen, western Norway |
title_fullStr |
Topographic control of equilibrium-line altitude depression on reconstructed 'Little Ice Age' glaciers, Grovabreen, western Norway |
title_full_unstemmed |
Topographic control of equilibrium-line altitude depression on reconstructed 'Little Ice Age' glaciers, Grovabreen, western Norway |
title_sort |
topographic control of equilibrium-line altitude depression on reconstructed 'little ice age' glaciers, grovabreen, western norway |
publisher |
SAGE Publications |
publishDate |
1996 |
url |
http://dx.doi.org/10.1177/095968369600600110 http://journals.sagepub.com/doi/pdf/10.1177/095968369600600110 |
genre |
glacier |
genre_facet |
glacier |
op_source |
The Holocene volume 6, issue 1, page 82-89 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/095968369600600110 |
container_title |
The Holocene |
container_volume |
6 |
container_issue |
1 |
container_start_page |
82 |
op_container_end_page |
89 |
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1797583220000161792 |