Ice-Cliff Morphometry in Identifying the Surge Phenomenon of Tidewater Glaciers (Spitsbergen, Svalbard)
In this study, 110 tidewater glaciers from Spitsbergen were studied to characterize the frontal zone using morphometric indicators. In addition, their time variability was also determined based on features of the active phase of glacier surges. Landsat satellite imagery and topographic maps were use...
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ftmdpi:oai:mdpi.com:/2076-3263/10/9/328/ 2023-08-20T04:06:43+02:00 Ice-Cliff Morphometry in Identifying the Surge Phenomenon of Tidewater Glaciers (Spitsbergen, Svalbard) Joanna Ewa Szafraniec agris 2020-08-20 application/pdf https://doi.org/10.3390/geosciences10090328 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/geosciences10090328 https://creativecommons.org/licenses/by/4.0/ Geosciences; Volume 10; Issue 9; Pages: 328 ice-cliff morphometry “glacier buttress system” glacier surge Spitsbergen tidewater glaciers Text 2020 ftmdpi https://doi.org/10.3390/geosciences10090328 2023-07-31T23:57:22Z In this study, 110 tidewater glaciers from Spitsbergen were studied to characterize the frontal zone using morphometric indicators. In addition, their time variability was also determined based on features of the active phase of glacier surges. Landsat satellite imagery and topographic maps were used for digitalization of the ice-cliffs line. In recent years (2014–2017) all the glaciers studied can be thus classified as: stagnant (33%), retreating and deeply recessing (33%), starting to move forward/fulfilling the frontal zone (23%), and surging (11%). Indicators of the glacier frontal zone (CfD and CfE) allow to identify the beginning and the end of the active phase through changes in their values by ca. 0.05–0.06 by the year and get even bigger for large glaciers as opposed to typical interannual differences within the limits of ±0.01 to 0.02. The active phase lasted an average of 6–10 years. The presence of a “glacier buttress system” and the “pointed arch” structure of the ice-cliff seem to be an important factor regulating the tidewater glacier stability. Text glacier Svalbard Tidewater Spitsbergen MDPI Open Access Publishing Buttress ENVELOPE(-57.083,-57.083,-63.550,-63.550) Svalbard Geosciences 10 9 328 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
ice-cliff morphometry “glacier buttress system” glacier surge Spitsbergen tidewater glaciers |
spellingShingle |
ice-cliff morphometry “glacier buttress system” glacier surge Spitsbergen tidewater glaciers Joanna Ewa Szafraniec Ice-Cliff Morphometry in Identifying the Surge Phenomenon of Tidewater Glaciers (Spitsbergen, Svalbard) |
topic_facet |
ice-cliff morphometry “glacier buttress system” glacier surge Spitsbergen tidewater glaciers |
description |
In this study, 110 tidewater glaciers from Spitsbergen were studied to characterize the frontal zone using morphometric indicators. In addition, their time variability was also determined based on features of the active phase of glacier surges. Landsat satellite imagery and topographic maps were used for digitalization of the ice-cliffs line. In recent years (2014–2017) all the glaciers studied can be thus classified as: stagnant (33%), retreating and deeply recessing (33%), starting to move forward/fulfilling the frontal zone (23%), and surging (11%). Indicators of the glacier frontal zone (CfD and CfE) allow to identify the beginning and the end of the active phase through changes in their values by ca. 0.05–0.06 by the year and get even bigger for large glaciers as opposed to typical interannual differences within the limits of ±0.01 to 0.02. The active phase lasted an average of 6–10 years. The presence of a “glacier buttress system” and the “pointed arch” structure of the ice-cliff seem to be an important factor regulating the tidewater glacier stability. |
format |
Text |
author |
Joanna Ewa Szafraniec |
author_facet |
Joanna Ewa Szafraniec |
author_sort |
Joanna Ewa Szafraniec |
title |
Ice-Cliff Morphometry in Identifying the Surge Phenomenon of Tidewater Glaciers (Spitsbergen, Svalbard) |
title_short |
Ice-Cliff Morphometry in Identifying the Surge Phenomenon of Tidewater Glaciers (Spitsbergen, Svalbard) |
title_full |
Ice-Cliff Morphometry in Identifying the Surge Phenomenon of Tidewater Glaciers (Spitsbergen, Svalbard) |
title_fullStr |
Ice-Cliff Morphometry in Identifying the Surge Phenomenon of Tidewater Glaciers (Spitsbergen, Svalbard) |
title_full_unstemmed |
Ice-Cliff Morphometry in Identifying the Surge Phenomenon of Tidewater Glaciers (Spitsbergen, Svalbard) |
title_sort |
ice-cliff morphometry in identifying the surge phenomenon of tidewater glaciers (spitsbergen, svalbard) |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2020 |
url |
https://doi.org/10.3390/geosciences10090328 |
op_coverage |
agris |
long_lat |
ENVELOPE(-57.083,-57.083,-63.550,-63.550) |
geographic |
Buttress Svalbard |
geographic_facet |
Buttress Svalbard |
genre |
glacier Svalbard Tidewater Spitsbergen |
genre_facet |
glacier Svalbard Tidewater Spitsbergen |
op_source |
Geosciences; Volume 10; Issue 9; Pages: 328 |
op_relation |
https://dx.doi.org/10.3390/geosciences10090328 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/geosciences10090328 |
container_title |
Geosciences |
container_volume |
10 |
container_issue |
9 |
container_start_page |
328 |
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1774718007194419200 |