Massive subsurface ice formed by refreezing of ice-shelf melt ponds
Surface melt ponds form intermittently on several Antarctic ice shelves. Although implicatedin ice-shelf break up, the consequences of such ponding for ice formation and ice-shelfstructure have not been evaluated. Here we report the discovery of a massive subsurface icelayer, at least 16 km across,...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/231741 2023-05-15T13:50:15+02:00 Massive subsurface ice formed by refreezing of ice-shelf melt ponds Hubbard, Bryn Philippe, Morgane Tison, Jean-Louis 2016-06-10 2 full-text file(s): application/pdf | application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/231741 https://dipot.ulb.ac.be/dspace/bitstream/2013/231741/4/doi_215368.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/231741/3/ncomms11897.pdf en eng uri/info:doi/10.1038/ncomms11897 uri/info:scp/84974625281 https://dipot.ulb.ac.be/dspace/bitstream/2013/231741/4/doi_215368.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/231741/3/ncomms11897.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/231741 2 full-text file(s): info:eu-repo/semantics/openAccess | info:eu-repo/semantics/restrictedAccess Nature communications, 7 Glaciologie info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2016 ftunivbruxelles 2022-06-12T21:30:17Z Surface melt ponds form intermittently on several Antarctic ice shelves. Although implicatedin ice-shelf break up, the consequences of such ponding for ice formation and ice-shelfstructure have not been evaluated. Here we report the discovery of a massive subsurface icelayer, at least 16 km across, several kilometres long and tens of metres deep, located in anarea of intense melting and intermittent ponding on Larsen C Ice Shelf, Antarctica. Wecombine borehole optical televiewer logging and radar measurements with remote sensingand firn modelling to investigate the layer, found to be ~10°C warmer and ~170 kg/m³ denser than anticipated in the absence of ponding and hitherto used in models of ice-shelffracture and flow. Surface ponding and ice layers such as the one we report are likely to formon a wider range of Antarctic ice shelves in response to climatic warming in forthcomingdecades. 0 SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Shelf Ice Shelves DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) Antarctic |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Glaciologie |
spellingShingle |
Glaciologie Hubbard, Bryn Philippe, Morgane Tison, Jean-Louis Massive subsurface ice formed by refreezing of ice-shelf melt ponds |
topic_facet |
Glaciologie |
description |
Surface melt ponds form intermittently on several Antarctic ice shelves. Although implicatedin ice-shelf break up, the consequences of such ponding for ice formation and ice-shelfstructure have not been evaluated. Here we report the discovery of a massive subsurface icelayer, at least 16 km across, several kilometres long and tens of metres deep, located in anarea of intense melting and intermittent ponding on Larsen C Ice Shelf, Antarctica. Wecombine borehole optical televiewer logging and radar measurements with remote sensingand firn modelling to investigate the layer, found to be ~10°C warmer and ~170 kg/m³ denser than anticipated in the absence of ponding and hitherto used in models of ice-shelffracture and flow. Surface ponding and ice layers such as the one we report are likely to formon a wider range of Antarctic ice shelves in response to climatic warming in forthcomingdecades. 0 SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Hubbard, Bryn Philippe, Morgane Tison, Jean-Louis |
author_facet |
Hubbard, Bryn Philippe, Morgane Tison, Jean-Louis |
author_sort |
Hubbard, Bryn |
title |
Massive subsurface ice formed by refreezing of ice-shelf melt ponds |
title_short |
Massive subsurface ice formed by refreezing of ice-shelf melt ponds |
title_full |
Massive subsurface ice formed by refreezing of ice-shelf melt ponds |
title_fullStr |
Massive subsurface ice formed by refreezing of ice-shelf melt ponds |
title_full_unstemmed |
Massive subsurface ice formed by refreezing of ice-shelf melt ponds |
title_sort |
massive subsurface ice formed by refreezing of ice-shelf melt ponds |
publishDate |
2016 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/231741 https://dipot.ulb.ac.be/dspace/bitstream/2013/231741/4/doi_215368.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/231741/3/ncomms11897.pdf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Shelf Ice Shelves |
genre_facet |
Antarc* Antarctic Antarctica Ice Shelf Ice Shelves |
op_source |
Nature communications, 7 |
op_relation |
uri/info:doi/10.1038/ncomms11897 uri/info:scp/84974625281 https://dipot.ulb.ac.be/dspace/bitstream/2013/231741/4/doi_215368.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/231741/3/ncomms11897.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/231741 |
op_rights |
2 full-text file(s): info:eu-repo/semantics/openAccess | info:eu-repo/semantics/restrictedAccess |
_version_ |
1766253284642783232 |