Structural evolution during a surge in the Paulabreen glacier system, Svalbard
Abstract We assess the evolution of glaciological structures during the 2003–05 surge in the Paulabreen glacier system, Svalbard. Glaciological structures on the glacier surface were mapped using aerial photographs captured in the early stages of the surge (2003) and 5 years after surge termination...
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Cambridge University Press (CUP)
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Online Access: | http://dx.doi.org/10.1017/jog.2022.53 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143022000533 |
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crcambridgeupr:10.1017/jog.2022.53 2024-06-23T07:53:04+00:00 Structural evolution during a surge in the Paulabreen glacier system, Svalbard Lovell, Harold Fleming, Edward J. Norges Forskningsråd Natural Environment Research Council Natural Environment Research Council 2022 http://dx.doi.org/10.1017/jog.2022.53 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143022000533 en eng Cambridge University Press (CUP) https://creativecommons.org/licenses/by/4.0/ Journal of Glaciology volume 69, issue 273, page 141-152 ISSN 0022-1430 1727-5652 journal-article 2022 crcambridgeupr https://doi.org/10.1017/jog.2022.53 2024-06-12T04:04:33Z Abstract We assess the evolution of glaciological structures during the 2003–05 surge in the Paulabreen glacier system, Svalbard. Glaciological structures on the glacier surface were mapped using aerial photographs captured in the early stages of the surge (2003) and 5 years after surge termination (2011). Three-dimensional measurements of glaciological structures were collected at the tidewater front in 2013. These datasets document the physical changes during (1) the late quiescent phase; (2) the early phase of the surge as the surge front propagated down Skobreen and advanced into Paulabreen and (3) the final stages of the surge following the surge front reaching the glacier terminus. Crevasse patterns and clusters of arcuate shear planes record zones of compressive and extensional flow associated with the downglacier progression of the surge front. The transfer of surging ice from Skobreen into Paulabreen caused lateral displacement of the medial moraines to the northeast. At the ice front, this movement tilted glaciological structures in the same direction. Structures at the southwest margin record strike–slip faulting and the elevation of debris into the ice in a zone of compression and transpression. We summarise these observations in a schematic reconstruction of structural evolution during the surge. Article in Journal/Newspaper glacier Journal of Glaciology Svalbard Tidewater Cambridge University Press Paulabreen ENVELOPE(17.227,17.227,77.755,77.755) Svalbard Journal of Glaciology 1 12 |
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Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract We assess the evolution of glaciological structures during the 2003–05 surge in the Paulabreen glacier system, Svalbard. Glaciological structures on the glacier surface were mapped using aerial photographs captured in the early stages of the surge (2003) and 5 years after surge termination (2011). Three-dimensional measurements of glaciological structures were collected at the tidewater front in 2013. These datasets document the physical changes during (1) the late quiescent phase; (2) the early phase of the surge as the surge front propagated down Skobreen and advanced into Paulabreen and (3) the final stages of the surge following the surge front reaching the glacier terminus. Crevasse patterns and clusters of arcuate shear planes record zones of compressive and extensional flow associated with the downglacier progression of the surge front. The transfer of surging ice from Skobreen into Paulabreen caused lateral displacement of the medial moraines to the northeast. At the ice front, this movement tilted glaciological structures in the same direction. Structures at the southwest margin record strike–slip faulting and the elevation of debris into the ice in a zone of compression and transpression. We summarise these observations in a schematic reconstruction of structural evolution during the surge. |
author2 |
Norges Forskningsråd Natural Environment Research Council Natural Environment Research Council |
format |
Article in Journal/Newspaper |
author |
Lovell, Harold Fleming, Edward J. |
spellingShingle |
Lovell, Harold Fleming, Edward J. Structural evolution during a surge in the Paulabreen glacier system, Svalbard |
author_facet |
Lovell, Harold Fleming, Edward J. |
author_sort |
Lovell, Harold |
title |
Structural evolution during a surge in the Paulabreen glacier system, Svalbard |
title_short |
Structural evolution during a surge in the Paulabreen glacier system, Svalbard |
title_full |
Structural evolution during a surge in the Paulabreen glacier system, Svalbard |
title_fullStr |
Structural evolution during a surge in the Paulabreen glacier system, Svalbard |
title_full_unstemmed |
Structural evolution during a surge in the Paulabreen glacier system, Svalbard |
title_sort |
structural evolution during a surge in the paulabreen glacier system, svalbard |
publisher |
Cambridge University Press (CUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1017/jog.2022.53 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143022000533 |
long_lat |
ENVELOPE(17.227,17.227,77.755,77.755) |
geographic |
Paulabreen Svalbard |
geographic_facet |
Paulabreen Svalbard |
genre |
glacier Journal of Glaciology Svalbard Tidewater |
genre_facet |
glacier Journal of Glaciology Svalbard Tidewater |
op_source |
Journal of Glaciology volume 69, issue 273, page 141-152 ISSN 0022-1430 1727-5652 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2022.53 |
container_title |
Journal of Glaciology |
container_start_page |
1 |
op_container_end_page |
12 |
_version_ |
1802644553820274688 |