Uneven onset and pace of ice-dynamical imbalance in the Amundsen Sea Embayment, West Antarctica
We combine measurements acquired by five satellite altimeter missions to obtain an uninterrupted record of ice-sheet elevation change over the Amundsen Sea Embayment, West Antarctica, since 1992. Using these data, we examine the onset of surface lowering arising through ice-dynamical imbalance, and...
Published in: | Geophysical Research Letters |
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Language: | English |
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2017
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Online Access: | https://hdl.handle.net/1983/46be8911-05c8-46af-aae6-a1342b46750a https://research-information.bris.ac.uk/en/publications/46be8911-05c8-46af-aae6-a1342b46750a https://doi.org/10.1002/2016GL070733 https://research-information.bris.ac.uk/ws/files/103823708/Konrad_et_al_2017_Geophysical_Research_Letters.pdf https://research-information.bris.ac.uk/ws/files/104776458/grl55321_sup_0001_supinfo.pdf http://www.scopus.com/inward/record.url?eid=2-s2.0-85013029136&partnerID=MN8TOARS |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/46be8911-05c8-46af-aae6-a1342b46750a 2024-04-21T07:45:11+00:00 Uneven onset and pace of ice-dynamical imbalance in the Amundsen Sea Embayment, West Antarctica Konrad, Hannes Gilbert, Lin Cornford, Stephen Payne, Tony Hogg, Anna Muir, Alan Shepherd, Andrew 2017-01-28 application/pdf https://hdl.handle.net/1983/46be8911-05c8-46af-aae6-a1342b46750a https://research-information.bris.ac.uk/en/publications/46be8911-05c8-46af-aae6-a1342b46750a https://doi.org/10.1002/2016GL070733 https://research-information.bris.ac.uk/ws/files/103823708/Konrad_et_al_2017_Geophysical_Research_Letters.pdf https://research-information.bris.ac.uk/ws/files/104776458/grl55321_sup_0001_supinfo.pdf http://www.scopus.com/inward/record.url?eid=2-s2.0-85013029136&partnerID=MN8TOARS eng eng https://research-information.bris.ac.uk/en/publications/46be8911-05c8-46af-aae6-a1342b46750a info:eu-repo/semantics/openAccess Konrad , H , Gilbert , L , Cornford , S , Payne , T , Hogg , A , Muir , A & Shepherd , A 2017 , ' Uneven onset and pace of ice-dynamical imbalance in the Amundsen Sea Embayment, West Antarctica ' , Geophysical Research Letters , vol. 44 , no. 2 , pp. 910-918 . https://doi.org/10.1002/2016GL070733 Glacier retreat Amundsen Sea Satellite altimetry article 2017 ftubristolcris https://doi.org/10.1002/2016GL070733 2024-03-27T15:15:18Z We combine measurements acquired by five satellite altimeter missions to obtain an uninterrupted record of ice-sheet elevation change over the Amundsen Sea Embayment, West Antarctica, since 1992. Using these data, we examine the onset of surface lowering arising through ice-dynamical imbalance, and the pace at which it has propagated inland, by tracking elevation changes along glacier flowlines. Surface lowering has spread slowest (<6 km/yr) along the Pope, Smith, and Kohler (PSK) Glaciers, due to their small extent. Pine Island Glacier (PIG) is characterized by a continuous inland spreading of surface lowering, notably fast at rates of 13 to 15 km/yr along tributaries draining the southeastern lobe, possibly due to basal conditions or tributary geometry. Surface lowering on Thwaites Glacier (THG) has been episodic, and has spread inland fastest (10 to 12 km/yr) along its central flowlines. The current episodes of surface lowering started approximately 10 yr before the first measurements on PSK, around 1990 on PIG, and around 2000 on THG. Ice-dynamical imbalance across the sector has therefore been uneven during the satellite record. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctica Ice Sheet Pine Island Pine Island Glacier Thwaites Glacier West Antarctica University of Bristol: Bristol Research Geophysical Research Letters 44 2 910 918 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
Glacier retreat Amundsen Sea Satellite altimetry |
spellingShingle |
Glacier retreat Amundsen Sea Satellite altimetry Konrad, Hannes Gilbert, Lin Cornford, Stephen Payne, Tony Hogg, Anna Muir, Alan Shepherd, Andrew Uneven onset and pace of ice-dynamical imbalance in the Amundsen Sea Embayment, West Antarctica |
topic_facet |
Glacier retreat Amundsen Sea Satellite altimetry |
description |
We combine measurements acquired by five satellite altimeter missions to obtain an uninterrupted record of ice-sheet elevation change over the Amundsen Sea Embayment, West Antarctica, since 1992. Using these data, we examine the onset of surface lowering arising through ice-dynamical imbalance, and the pace at which it has propagated inland, by tracking elevation changes along glacier flowlines. Surface lowering has spread slowest (<6 km/yr) along the Pope, Smith, and Kohler (PSK) Glaciers, due to their small extent. Pine Island Glacier (PIG) is characterized by a continuous inland spreading of surface lowering, notably fast at rates of 13 to 15 km/yr along tributaries draining the southeastern lobe, possibly due to basal conditions or tributary geometry. Surface lowering on Thwaites Glacier (THG) has been episodic, and has spread inland fastest (10 to 12 km/yr) along its central flowlines. The current episodes of surface lowering started approximately 10 yr before the first measurements on PSK, around 1990 on PIG, and around 2000 on THG. Ice-dynamical imbalance across the sector has therefore been uneven during the satellite record. |
format |
Article in Journal/Newspaper |
author |
Konrad, Hannes Gilbert, Lin Cornford, Stephen Payne, Tony Hogg, Anna Muir, Alan Shepherd, Andrew |
author_facet |
Konrad, Hannes Gilbert, Lin Cornford, Stephen Payne, Tony Hogg, Anna Muir, Alan Shepherd, Andrew |
author_sort |
Konrad, Hannes |
title |
Uneven onset and pace of ice-dynamical imbalance in the Amundsen Sea Embayment, West Antarctica |
title_short |
Uneven onset and pace of ice-dynamical imbalance in the Amundsen Sea Embayment, West Antarctica |
title_full |
Uneven onset and pace of ice-dynamical imbalance in the Amundsen Sea Embayment, West Antarctica |
title_fullStr |
Uneven onset and pace of ice-dynamical imbalance in the Amundsen Sea Embayment, West Antarctica |
title_full_unstemmed |
Uneven onset and pace of ice-dynamical imbalance in the Amundsen Sea Embayment, West Antarctica |
title_sort |
uneven onset and pace of ice-dynamical imbalance in the amundsen sea embayment, west antarctica |
publishDate |
2017 |
url |
https://hdl.handle.net/1983/46be8911-05c8-46af-aae6-a1342b46750a https://research-information.bris.ac.uk/en/publications/46be8911-05c8-46af-aae6-a1342b46750a https://doi.org/10.1002/2016GL070733 https://research-information.bris.ac.uk/ws/files/103823708/Konrad_et_al_2017_Geophysical_Research_Letters.pdf https://research-information.bris.ac.uk/ws/files/104776458/grl55321_sup_0001_supinfo.pdf http://www.scopus.com/inward/record.url?eid=2-s2.0-85013029136&partnerID=MN8TOARS |
genre |
Amundsen Sea Antarc* Antarctica Ice Sheet Pine Island Pine Island Glacier Thwaites Glacier West Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctica Ice Sheet Pine Island Pine Island Glacier Thwaites Glacier West Antarctica |
op_source |
Konrad , H , Gilbert , L , Cornford , S , Payne , T , Hogg , A , Muir , A & Shepherd , A 2017 , ' Uneven onset and pace of ice-dynamical imbalance in the Amundsen Sea Embayment, West Antarctica ' , Geophysical Research Letters , vol. 44 , no. 2 , pp. 910-918 . https://doi.org/10.1002/2016GL070733 |
op_relation |
https://research-information.bris.ac.uk/en/publications/46be8911-05c8-46af-aae6-a1342b46750a |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2016GL070733 |
container_title |
Geophysical Research Letters |
container_volume |
44 |
container_issue |
2 |
container_start_page |
910 |
op_container_end_page |
918 |
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1796938767124135936 |