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dc.contributor.author
Sun, Shao
dc.contributor.author
Cornford, Stephen L.
dc.contributor.author
Gwyther, David E.
dc.contributor.author
Gladstone, Rupert M.
dc.contributor.author
Galton-Fenzi, Benjamin K.
dc.contributor.author
Zhao, Liyun
dc.contributor.author
Moore, John C.
dc.date.accessioned
2019-06-07T08:51:47Z
dc.date.available
2017-06-12T17:05:23Z
dc.date.available
2019-06-07T08:51:47Z
dc.date.issued
2016-09
dc.identifier.issn
0260-3055
dc.identifier.other
10.1017/aog.2016.27
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/123677
dc.identifier.doi
10.3929/ethz-b-000123677
dc.description.abstract
The grounded ice in the Totten and Dalton glaciers is an essential component of the buttressing for the marine-based Aurora basin, and hence their stability is important to the future rate of mass loss from East Antarctica. Totten and Vanderford glaciers are joined by a deep east-west running subglacial trench between the continental ice sheet and Law Dome, while a shallower trench links the Totten and Dalton glaciers. All three glaciers flow into the ocean close to the Antarctic circle and experience ocean-driven ice shelf melt rates comparable with the Amundsen Sea Embayment. We investigate this combination of trenches and ice shelves with the BISICLES adaptive mesh ice-sheet model and ocean-forcing melt rates derived from two global climate models. We find that ice shelf ablation at a rate comparable with the present day is sufficient to cause widespread grounding line retreat in an east-west direction across Totten and Dalton glaciers, with projected future warming causing faster retreat. Meanwhile, southward retreat is limited by the shallower ocean facing slopes between the coast and the bulk of the Aurora sub-glacial trench. However the two climate models produce completely different future ice shelf basal melt rates in this region: HadCM3 drives increasing sub-ice shelf melting to ~2150, while ECHAM5 shows little or no increase in sub-ice shelf melting under the two greenhouse gas forcing scenarios.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Cambridge University Press
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Ice-sheet modelling
en_US
dc.subject
Atmosphere/ice/ocean interactions
en_US
dc.title
Impact of ocean forcing on the Aurora Basin in the 21st and 22nd centuries
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2016-09-19
ethz.journal.title
Annals of Glaciology
ethz.journal.volume
57
en_US
ethz.journal.issue
73
en_US
ethz.pages.start
79
en_US
ethz.pages.end
86
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.identifier.nebis
000011350
ethz.publication.place
Cambridge
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2017-06-12T17:05:57Z
ethz.source
ECIT
ethz.identifier.importid
imp593654f04f4ea16189
ethz.ecitpid
pub:186103
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-18T17:58:43Z
ethz.rosetta.lastUpdated
2019-06-07T08:51:57Z
ethz.rosetta.versionExported
true
ethz.COinS
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