Ocean forced variability of Totten Glacier mass loss
A large volume of the East Antarctic Ice Sheet drains through the Totten Glacier (TG) and is thought to be a potential source of substantial global sea level rise over the coming centuries. We show the surface velocity and height of the floating part of TG, which buttresses the grounded component, h...
Published in: | Geological Society, London, Special Publications |
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Main Authors: | , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
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2017
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Online Access: | https://hdl.handle.net/1983/27694a07-b3c7-45fd-bdfb-74eb6b09c3e0 https://research-information.bris.ac.uk/en/publications/27694a07-b3c7-45fd-bdfb-74eb6b09c3e0 https://doi.org/10.1144/SP461.6 https://research-information.bris.ac.uk/ws/files/130639792/SP461.6.full.pdf |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/27694a07-b3c7-45fd-bdfb-74eb6b09c3e0 2024-04-28T08:00:33+00:00 Ocean forced variability of Totten Glacier mass loss Roberts, Jason L. Galton-fenzi, Benjamin K Paolo, Fernando S Donnelly, Claire B Gwyther, David E Padman, Laurie Young, Duncan Warner, Roland Greenbaum, Jamin Fricker, Helen A Payne, Antony J Cornford, Stephen Le Brocq, Anne Ommen, Tas Van Blankenship, Don Siegert, Martin J 2017-08-23 application/pdf https://hdl.handle.net/1983/27694a07-b3c7-45fd-bdfb-74eb6b09c3e0 https://research-information.bris.ac.uk/en/publications/27694a07-b3c7-45fd-bdfb-74eb6b09c3e0 https://doi.org/10.1144/SP461.6 https://research-information.bris.ac.uk/ws/files/130639792/SP461.6.full.pdf eng eng https://research-information.bris.ac.uk/en/publications/27694a07-b3c7-45fd-bdfb-74eb6b09c3e0 info:eu-repo/semantics/openAccess Roberts , J L , Galton-fenzi , B K , Paolo , F S , Donnelly , C B , Gwyther , D E , Padman , L , Young , D , Warner , R , Greenbaum , J , Fricker , H A , Payne , A J , Cornford , S , Le Brocq , A , Ommen , T V , Blankenship , D & Siegert , M J 2017 , ' Ocean forced variability of Totten Glacier mass loss ' , Geological Society Special Publications , vol. 461 , pp. 175-186 . https://doi.org/10.1144/SP461.6 article 2017 ftubristolcris https://doi.org/10.1144/SP461.6 2024-04-09T23:58:07Z A large volume of the East Antarctic Ice Sheet drains through the Totten Glacier (TG) and is thought to be a potential source of substantial global sea level rise over the coming centuries. We show the surface velocity and height of the floating part of TG, which buttresses the grounded component, have varied substantially over two decades (1989–2011), with variations in surface height strongly anti-correlated with simulated basal melt rates (r=0.70, p<0.05). Coupled glacier/ice-shelf simulations confirm ice flow and thickness respond to both basal melting of the ice shelf and grounding on bed obstacles. We conclude the observed variability of TG is primarily ocean-driven. Ocean warming in this region will lead to enhanced ice-sheet dynamism and loss of upstream grounded ice. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Ice Shelf Totten Glacier University of Bristol: Bristol Research Geological Society, London, Special Publications 461 1 175 186 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
description |
A large volume of the East Antarctic Ice Sheet drains through the Totten Glacier (TG) and is thought to be a potential source of substantial global sea level rise over the coming centuries. We show the surface velocity and height of the floating part of TG, which buttresses the grounded component, have varied substantially over two decades (1989–2011), with variations in surface height strongly anti-correlated with simulated basal melt rates (r=0.70, p<0.05). Coupled glacier/ice-shelf simulations confirm ice flow and thickness respond to both basal melting of the ice shelf and grounding on bed obstacles. We conclude the observed variability of TG is primarily ocean-driven. Ocean warming in this region will lead to enhanced ice-sheet dynamism and loss of upstream grounded ice. |
format |
Article in Journal/Newspaper |
author |
Roberts, Jason L. Galton-fenzi, Benjamin K Paolo, Fernando S Donnelly, Claire B Gwyther, David E Padman, Laurie Young, Duncan Warner, Roland Greenbaum, Jamin Fricker, Helen A Payne, Antony J Cornford, Stephen Le Brocq, Anne Ommen, Tas Van Blankenship, Don Siegert, Martin J |
spellingShingle |
Roberts, Jason L. Galton-fenzi, Benjamin K Paolo, Fernando S Donnelly, Claire B Gwyther, David E Padman, Laurie Young, Duncan Warner, Roland Greenbaum, Jamin Fricker, Helen A Payne, Antony J Cornford, Stephen Le Brocq, Anne Ommen, Tas Van Blankenship, Don Siegert, Martin J Ocean forced variability of Totten Glacier mass loss |
author_facet |
Roberts, Jason L. Galton-fenzi, Benjamin K Paolo, Fernando S Donnelly, Claire B Gwyther, David E Padman, Laurie Young, Duncan Warner, Roland Greenbaum, Jamin Fricker, Helen A Payne, Antony J Cornford, Stephen Le Brocq, Anne Ommen, Tas Van Blankenship, Don Siegert, Martin J |
author_sort |
Roberts, Jason L. |
title |
Ocean forced variability of Totten Glacier mass loss |
title_short |
Ocean forced variability of Totten Glacier mass loss |
title_full |
Ocean forced variability of Totten Glacier mass loss |
title_fullStr |
Ocean forced variability of Totten Glacier mass loss |
title_full_unstemmed |
Ocean forced variability of Totten Glacier mass loss |
title_sort |
ocean forced variability of totten glacier mass loss |
publishDate |
2017 |
url |
https://hdl.handle.net/1983/27694a07-b3c7-45fd-bdfb-74eb6b09c3e0 https://research-information.bris.ac.uk/en/publications/27694a07-b3c7-45fd-bdfb-74eb6b09c3e0 https://doi.org/10.1144/SP461.6 https://research-information.bris.ac.uk/ws/files/130639792/SP461.6.full.pdf |
genre |
Antarc* Antarctic Ice Sheet Ice Shelf Totten Glacier |
genre_facet |
Antarc* Antarctic Ice Sheet Ice Shelf Totten Glacier |
op_source |
Roberts , J L , Galton-fenzi , B K , Paolo , F S , Donnelly , C B , Gwyther , D E , Padman , L , Young , D , Warner , R , Greenbaum , J , Fricker , H A , Payne , A J , Cornford , S , Le Brocq , A , Ommen , T V , Blankenship , D & Siegert , M J 2017 , ' Ocean forced variability of Totten Glacier mass loss ' , Geological Society Special Publications , vol. 461 , pp. 175-186 . https://doi.org/10.1144/SP461.6 |
op_relation |
https://research-information.bris.ac.uk/en/publications/27694a07-b3c7-45fd-bdfb-74eb6b09c3e0 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1144/SP461.6 |
container_title |
Geological Society, London, Special Publications |
container_volume |
461 |
container_issue |
1 |
container_start_page |
175 |
op_container_end_page |
186 |
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