Melting Characteristics of Snow Cover on Tidewater Glaciers in Hornsund Fjord, Svalbard
In recent years, the Svalbard area, especially its southern section, has been characterised by an exceptionally thin snow cover, which has a significant impact of the annual mass balance of glaciers. The objective of this study was to determine melting processes of the snow cover deposited on 11 gla...
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ftmdpi:oai:mdpi.com:/2073-4441/9/10/804/ 2023-08-20T04:04:47+02:00 Melting Characteristics of Snow Cover on Tidewater Glaciers in Hornsund Fjord, Svalbard Michał Laska Barbara Barzycka Bartłomiej Luks agris 2017-10-19 application/pdf https://doi.org/10.3390/w9100804 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/w9100804 https://creativecommons.org/licenses/by/4.0/ Water; Volume 9; Issue 10; Pages: 804 Landsat 8 supervised classification Snow-Covered Area freshwater Arctic climate change Text 2017 ftmdpi https://doi.org/10.3390/w9100804 2023-07-31T21:15:25Z In recent years, the Svalbard area, especially its southern section, has been characterised by an exceptionally thin snow cover, which has a significant impact of the annual mass balance of glaciers. The objective of this study was to determine melting processes of the snow cover deposited on 11 glaciers that terminate into Hornsund Fjord during the melting period of 2014. The study included analyses of snow pits and snow cores, meteorological data collected from automatic weather stations and Polish Polar Station Hornsund, and supervised classification of six Landsat 8 images for assessing the progress of snow cover melting. The calculated Snow-Covered Area (SCA) varied from 98% at the beginning of the melting season to 43% at the end of August. The melting vertical gradient on Hansbreen was −0.34 m 100 m−1, leading to surface melting of −1.4 cm water equivalent (w.e.) day−1 in the ablation zone (c. 200 m a.s.l. (above sea level)) and −0.7 cm w.e. day−1 in the accumulation zone (c. 400 m a.s.l.). Furthermore, the study identified several observed features such as low snow depth in the accumulation zone of the Hornsund glaciers, a large proportion of the snow layers (12–27%) produced by rain-on-snow events, and a frequent occurrence of summer thermal inversions (80% annually), indicating that the area is experiencing intensive climate changes. Text Arctic Climate change Hornsund Svalbard MDPI Open Access Publishing Arctic Hansbreen ENVELOPE(15.650,15.650,77.075,77.075) Hornsund ENVELOPE(15.865,15.865,76.979,76.979) Svalbard Water 9 10 804 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
Landsat 8 supervised classification Snow-Covered Area freshwater Arctic climate change |
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Landsat 8 supervised classification Snow-Covered Area freshwater Arctic climate change Michał Laska Barbara Barzycka Bartłomiej Luks Melting Characteristics of Snow Cover on Tidewater Glaciers in Hornsund Fjord, Svalbard |
topic_facet |
Landsat 8 supervised classification Snow-Covered Area freshwater Arctic climate change |
description |
In recent years, the Svalbard area, especially its southern section, has been characterised by an exceptionally thin snow cover, which has a significant impact of the annual mass balance of glaciers. The objective of this study was to determine melting processes of the snow cover deposited on 11 glaciers that terminate into Hornsund Fjord during the melting period of 2014. The study included analyses of snow pits and snow cores, meteorological data collected from automatic weather stations and Polish Polar Station Hornsund, and supervised classification of six Landsat 8 images for assessing the progress of snow cover melting. The calculated Snow-Covered Area (SCA) varied from 98% at the beginning of the melting season to 43% at the end of August. The melting vertical gradient on Hansbreen was −0.34 m 100 m−1, leading to surface melting of −1.4 cm water equivalent (w.e.) day−1 in the ablation zone (c. 200 m a.s.l. (above sea level)) and −0.7 cm w.e. day−1 in the accumulation zone (c. 400 m a.s.l.). Furthermore, the study identified several observed features such as low snow depth in the accumulation zone of the Hornsund glaciers, a large proportion of the snow layers (12–27%) produced by rain-on-snow events, and a frequent occurrence of summer thermal inversions (80% annually), indicating that the area is experiencing intensive climate changes. |
format |
Text |
author |
Michał Laska Barbara Barzycka Bartłomiej Luks |
author_facet |
Michał Laska Barbara Barzycka Bartłomiej Luks |
author_sort |
Michał Laska |
title |
Melting Characteristics of Snow Cover on Tidewater Glaciers in Hornsund Fjord, Svalbard |
title_short |
Melting Characteristics of Snow Cover on Tidewater Glaciers in Hornsund Fjord, Svalbard |
title_full |
Melting Characteristics of Snow Cover on Tidewater Glaciers in Hornsund Fjord, Svalbard |
title_fullStr |
Melting Characteristics of Snow Cover on Tidewater Glaciers in Hornsund Fjord, Svalbard |
title_full_unstemmed |
Melting Characteristics of Snow Cover on Tidewater Glaciers in Hornsund Fjord, Svalbard |
title_sort |
melting characteristics of snow cover on tidewater glaciers in hornsund fjord, svalbard |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2017 |
url |
https://doi.org/10.3390/w9100804 |
op_coverage |
agris |
long_lat |
ENVELOPE(15.650,15.650,77.075,77.075) ENVELOPE(15.865,15.865,76.979,76.979) |
geographic |
Arctic Hansbreen Hornsund Svalbard |
geographic_facet |
Arctic Hansbreen Hornsund Svalbard |
genre |
Arctic Climate change Hornsund Svalbard |
genre_facet |
Arctic Climate change Hornsund Svalbard |
op_source |
Water; Volume 9; Issue 10; Pages: 804 |
op_relation |
https://dx.doi.org/10.3390/w9100804 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/w9100804 |
container_title |
Water |
container_volume |
9 |
container_issue |
10 |
container_start_page |
804 |
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