Evolution of surface velocities and ice discharge of Larsen B outlet glaciers from 1995 to 2013
We use repeat-pass SAR data to produce detailed maps of surface motion covering the glaciers draining into the former Larsen B ice shelf, Antarctic Peninsula, for different epochs between 1995 and 2013. We combine the velocity maps with estimates of ice thickness to analyze fluctuations of ice disch...
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Language: | English |
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European Geosciences Union
2015
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Online Access: | http://nora.nerc.ac.uk/id/eprint/509448/ https://nora.nerc.ac.uk/id/eprint/509448/1/tc-9-957-2015.pdf https://doi.org/10.5194/tc-9-957-2015 |
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ftnerc:oai:nora.nerc.ac.uk:509448 2023-05-15T13:48:09+02:00 Evolution of surface velocities and ice discharge of Larsen B outlet glaciers from 1995 to 2013 Wuite, J. Rott, H. Hetzenecker, M. Floricioiu, D. De Rydt, J. Gudmundsson, G.H. Nagler, T. Kern, M. 2015-05-09 text http://nora.nerc.ac.uk/id/eprint/509448/ https://nora.nerc.ac.uk/id/eprint/509448/1/tc-9-957-2015.pdf https://doi.org/10.5194/tc-9-957-2015 en eng European Geosciences Union https://nora.nerc.ac.uk/id/eprint/509448/1/tc-9-957-2015.pdf Wuite, J.; Rott, H.; Hetzenecker, M.; Floricioiu, D.; De Rydt, J.; Gudmundsson, G.H. orcid:0000-0003-4236-5369 Nagler, T.; Kern, M. 2015 Evolution of surface velocities and ice discharge of Larsen B outlet glaciers from 1995 to 2013. The Cryosphere, 9. 957-969. https://doi.org/10.5194/tc-9-957-2015 <https://doi.org/10.5194/tc-9-957-2015> cc_by CC-BY Publication - Article PeerReviewed 2015 ftnerc https://doi.org/10.5194/tc-9-957-2015 2023-02-04T19:40:49Z We use repeat-pass SAR data to produce detailed maps of surface motion covering the glaciers draining into the former Larsen B ice shelf, Antarctic Peninsula, for different epochs between 1995 and 2013. We combine the velocity maps with estimates of ice thickness to analyze fluctuations of ice discharge. The collapse of the central and northern sections of the ice shelf in 2002 led to a near-immediate acceleration of tributary glaciers as well as of the remnant ice shelf in Scar Inlet. Velocities of the glaciers discharging directly into the ocean remain to date well above the velocities of the pre-collapse period. The response of individual glaciers differs and velocities show significant temporal fluctuations, implying major variations in ice discharge and mass balance as well. Due to reduced velocity and ice thickness the ice discharge of Crane Glacier decreased from 5.02 Gt a−1 in 2007 to 1.72 Gt a−1 in 2013, whereas Hektoria and Green glaciers continue to show large temporal fluctuations in response to successive stages of frontal retreat. The velocity on Scar Inlet ice shelf increased two- to three fold since 1995, with the largest increase in the first years after the break-up of the main section of Larsen B. Flask and Leppard glaciers, the largest tributaries to Scar Inlet ice shelf, accelerated. In 2013 their discharge was 38% and 46%, higher than in 1995. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Crane Glacier Ice Shelf The Cryosphere Natural Environment Research Council: NERC Open Research Archive Antarctic Antarctic Peninsula Scar Inlet ENVELOPE(-61.867,-61.867,-65.933,-65.933) Crane Glacier ENVELOPE(-62.714,-62.714,-65.393,-65.393) The Cryosphere 9 3 957 969 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
We use repeat-pass SAR data to produce detailed maps of surface motion covering the glaciers draining into the former Larsen B ice shelf, Antarctic Peninsula, for different epochs between 1995 and 2013. We combine the velocity maps with estimates of ice thickness to analyze fluctuations of ice discharge. The collapse of the central and northern sections of the ice shelf in 2002 led to a near-immediate acceleration of tributary glaciers as well as of the remnant ice shelf in Scar Inlet. Velocities of the glaciers discharging directly into the ocean remain to date well above the velocities of the pre-collapse period. The response of individual glaciers differs and velocities show significant temporal fluctuations, implying major variations in ice discharge and mass balance as well. Due to reduced velocity and ice thickness the ice discharge of Crane Glacier decreased from 5.02 Gt a−1 in 2007 to 1.72 Gt a−1 in 2013, whereas Hektoria and Green glaciers continue to show large temporal fluctuations in response to successive stages of frontal retreat. The velocity on Scar Inlet ice shelf increased two- to three fold since 1995, with the largest increase in the first years after the break-up of the main section of Larsen B. Flask and Leppard glaciers, the largest tributaries to Scar Inlet ice shelf, accelerated. In 2013 their discharge was 38% and 46%, higher than in 1995. |
format |
Article in Journal/Newspaper |
author |
Wuite, J. Rott, H. Hetzenecker, M. Floricioiu, D. De Rydt, J. Gudmundsson, G.H. Nagler, T. Kern, M. |
spellingShingle |
Wuite, J. Rott, H. Hetzenecker, M. Floricioiu, D. De Rydt, J. Gudmundsson, G.H. Nagler, T. Kern, M. Evolution of surface velocities and ice discharge of Larsen B outlet glaciers from 1995 to 2013 |
author_facet |
Wuite, J. Rott, H. Hetzenecker, M. Floricioiu, D. De Rydt, J. Gudmundsson, G.H. Nagler, T. Kern, M. |
author_sort |
Wuite, J. |
title |
Evolution of surface velocities and ice discharge of Larsen B outlet glaciers from 1995 to 2013 |
title_short |
Evolution of surface velocities and ice discharge of Larsen B outlet glaciers from 1995 to 2013 |
title_full |
Evolution of surface velocities and ice discharge of Larsen B outlet glaciers from 1995 to 2013 |
title_fullStr |
Evolution of surface velocities and ice discharge of Larsen B outlet glaciers from 1995 to 2013 |
title_full_unstemmed |
Evolution of surface velocities and ice discharge of Larsen B outlet glaciers from 1995 to 2013 |
title_sort |
evolution of surface velocities and ice discharge of larsen b outlet glaciers from 1995 to 2013 |
publisher |
European Geosciences Union |
publishDate |
2015 |
url |
http://nora.nerc.ac.uk/id/eprint/509448/ https://nora.nerc.ac.uk/id/eprint/509448/1/tc-9-957-2015.pdf https://doi.org/10.5194/tc-9-957-2015 |
long_lat |
ENVELOPE(-61.867,-61.867,-65.933,-65.933) ENVELOPE(-62.714,-62.714,-65.393,-65.393) |
geographic |
Antarctic Antarctic Peninsula Scar Inlet Crane Glacier |
geographic_facet |
Antarctic Antarctic Peninsula Scar Inlet Crane Glacier |
genre |
Antarc* Antarctic Antarctic Peninsula Crane Glacier Ice Shelf The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Crane Glacier Ice Shelf The Cryosphere |
op_relation |
https://nora.nerc.ac.uk/id/eprint/509448/1/tc-9-957-2015.pdf Wuite, J.; Rott, H.; Hetzenecker, M.; Floricioiu, D.; De Rydt, J.; Gudmundsson, G.H. orcid:0000-0003-4236-5369 Nagler, T.; Kern, M. 2015 Evolution of surface velocities and ice discharge of Larsen B outlet glaciers from 1995 to 2013. The Cryosphere, 9. 957-969. https://doi.org/10.5194/tc-9-957-2015 <https://doi.org/10.5194/tc-9-957-2015> |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-9-957-2015 |
container_title |
The Cryosphere |
container_volume |
9 |
container_issue |
3 |
container_start_page |
957 |
op_container_end_page |
969 |
_version_ |
1766248794001768448 |