Spatial and temporal variability of Glacier surface velocities and outlet areas on James Ross island, northern Antarctic Peninsula
peer reviewed The northern Antarctic Peninsula was affected by a significant warming over the second half of the 20th century and the collapse of several ice shelves. Local climate conditions on James Ross Island on the northeastern coast can differ strongly from the main part of the Antarctic Penin...
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ftorbi:oai:orbi.ulg.ac.be:2268/239068 2024-10-13T14:02:57+00:00 Spatial and temporal variability of Glacier surface velocities and outlet areas on James Ross island, northern Antarctic Peninsula Lippl, Stefan Friedl, Peter Kittel, Christoph Marinsek, Sebastián Seehaus, Thorsten C. Braun, Matthias H. 2019-08-28 https://orbi.uliege.be/handle/2268/239068 https://orbi.uliege.be/bitstream/2268/239068/1/geosciences-09-00374-v2.pdf https://doi.org/10.3390/geosciences9090374 en eng MDPI Open Access Publishing urn:issn:2076-3263 https://orbi.uliege.be/handle/2268/239068 info:hdl:2268/239068 doi:10.3390/geosciences9090374 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Geosciences (2019-08-28) James Ross Island Antarctic Peninsula glacier area changes glacier velocities Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2019 ftorbi https://doi.org/10.3390/geosciences9090374 2024-09-30T14:23:32Z peer reviewed The northern Antarctic Peninsula was affected by a significant warming over the second half of the 20th century and the collapse of several ice shelves. Local climate conditions on James Ross Island on the northeastern coast can differ strongly from the main part of the Antarctic Peninsula. This paper reports the spatial and temporal variability of glacier surface velocities and the area of their outlets throughout James Ross Island, and evaluates potential relationships with atmospheric and oceanic conditions. Velocity estimates were retrieved from intensity feature tracking of scenes from satellite synthetic aperture radar sensors TerraSAR-X and TanDEM-X between 2014 and 2018, which were validated against ground observations. Calving front positions back to 1945 were used to calculate outlet area changes for the glaciers by using a common-box approach. The annual recession rates of almost all investigated glacier calving fronts decelerated for the time periods 2009–2014 and 2014–2018 in comparison to the period 1988–2009, but their velocity patterns differed. Analysis of atmospheric conditions failed to explain the different patterns in velocity and area changes. We suggest a strong influence from local bathymetric conditions. Future investigations of the oceanic conditions would be necessary for a profound understanding of the super-position of different influencing factors. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Ice Shelves James Ross Island Ross Island University of Liège: ORBi (Open Repository and Bibliography) Antarctic The Antarctic Antarctic Peninsula Ross Island Geosciences 9 9 374 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
James Ross Island Antarctic Peninsula glacier area changes glacier velocities Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
James Ross Island Antarctic Peninsula glacier area changes glacier velocities Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Lippl, Stefan Friedl, Peter Kittel, Christoph Marinsek, Sebastián Seehaus, Thorsten C. Braun, Matthias H. Spatial and temporal variability of Glacier surface velocities and outlet areas on James Ross island, northern Antarctic Peninsula |
topic_facet |
James Ross Island Antarctic Peninsula glacier area changes glacier velocities Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed The northern Antarctic Peninsula was affected by a significant warming over the second half of the 20th century and the collapse of several ice shelves. Local climate conditions on James Ross Island on the northeastern coast can differ strongly from the main part of the Antarctic Peninsula. This paper reports the spatial and temporal variability of glacier surface velocities and the area of their outlets throughout James Ross Island, and evaluates potential relationships with atmospheric and oceanic conditions. Velocity estimates were retrieved from intensity feature tracking of scenes from satellite synthetic aperture radar sensors TerraSAR-X and TanDEM-X between 2014 and 2018, which were validated against ground observations. Calving front positions back to 1945 were used to calculate outlet area changes for the glaciers by using a common-box approach. The annual recession rates of almost all investigated glacier calving fronts decelerated for the time periods 2009–2014 and 2014–2018 in comparison to the period 1988–2009, but their velocity patterns differed. Analysis of atmospheric conditions failed to explain the different patterns in velocity and area changes. We suggest a strong influence from local bathymetric conditions. Future investigations of the oceanic conditions would be necessary for a profound understanding of the super-position of different influencing factors. |
format |
Article in Journal/Newspaper |
author |
Lippl, Stefan Friedl, Peter Kittel, Christoph Marinsek, Sebastián Seehaus, Thorsten C. Braun, Matthias H. |
author_facet |
Lippl, Stefan Friedl, Peter Kittel, Christoph Marinsek, Sebastián Seehaus, Thorsten C. Braun, Matthias H. |
author_sort |
Lippl, Stefan |
title |
Spatial and temporal variability of Glacier surface velocities and outlet areas on James Ross island, northern Antarctic Peninsula |
title_short |
Spatial and temporal variability of Glacier surface velocities and outlet areas on James Ross island, northern Antarctic Peninsula |
title_full |
Spatial and temporal variability of Glacier surface velocities and outlet areas on James Ross island, northern Antarctic Peninsula |
title_fullStr |
Spatial and temporal variability of Glacier surface velocities and outlet areas on James Ross island, northern Antarctic Peninsula |
title_full_unstemmed |
Spatial and temporal variability of Glacier surface velocities and outlet areas on James Ross island, northern Antarctic Peninsula |
title_sort |
spatial and temporal variability of glacier surface velocities and outlet areas on james ross island, northern antarctic peninsula |
publisher |
MDPI Open Access Publishing |
publishDate |
2019 |
url |
https://orbi.uliege.be/handle/2268/239068 https://orbi.uliege.be/bitstream/2268/239068/1/geosciences-09-00374-v2.pdf https://doi.org/10.3390/geosciences9090374 |
geographic |
Antarctic The Antarctic Antarctic Peninsula Ross Island |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Ross Island |
genre |
Antarc* Antarctic Antarctic Peninsula Ice Shelves James Ross Island Ross Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Ice Shelves James Ross Island Ross Island |
op_source |
Geosciences (2019-08-28) |
op_relation |
urn:issn:2076-3263 https://orbi.uliege.be/handle/2268/239068 info:hdl:2268/239068 doi:10.3390/geosciences9090374 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3390/geosciences9090374 |
container_title |
Geosciences |
container_volume |
9 |
container_issue |
9 |
container_start_page |
374 |
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1812819389138862080 |