Evolution of ice-shelf channels in Antarctic ice shelves
Ice shelves buttress the continental ice flux andmediate ice–ocean interactions. They are often traversed bychannels in which basal melting is enhanced, impacting iceshelfstability. Here, channel evolution is investigated using atransient, three-dimensional full Stokes model and geophysicaldata coll...
Main Author: | |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2015
|
Subjects: | |
Online Access: | http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/200143 https://dipot.ulb.ac.be/dspace/bitstream/2013/200143/3/Drews2015b.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/200143/4/doi_183770.pdf |
id |
ftunivbruxelles:oai:dipot.ulb.ac.be:2013/200143 |
---|---|
record_format |
openpolar |
spelling |
ftunivbruxelles:oai:dipot.ulb.ac.be:2013/200143 2023-05-15T13:55:32+02:00 Evolution of ice-shelf channels in Antarctic ice shelves Drews, Reinhard 2015-06-04 2 full-text file(s): application/pdf | application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/200143 https://dipot.ulb.ac.be/dspace/bitstream/2013/200143/3/Drews2015b.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/200143/4/doi_183770.pdf en eng uri/info:doi/10.5194/tc-9-1169-2015 uri/info:scp/84930947880 https://dipot.ulb.ac.be/dspace/bitstream/2013/200143/3/Drews2015b.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/200143/4/doi_183770.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/200143 2 full-text file(s): info:eu-repo/semantics/openAccess | info:eu-repo/semantics/openAccess The Cryosphere, 9 (3 Géographie physique info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2015 ftunivbruxelles 2022-06-12T20:38:53Z Ice shelves buttress the continental ice flux andmediate ice–ocean interactions. They are often traversed bychannels in which basal melting is enhanced, impacting iceshelfstability. Here, channel evolution is investigated using atransient, three-dimensional full Stokes model and geophysicaldata collected on the Roi Baudouin Ice Shelf (RBIS),Antarctica. The modeling confirms basal melting as a feasiblemechanism for channel creation, although channels mayalso advect without melting for many tens of kilometers.Channels can be out of hydrostatic equilibrium dependingon their width and the upstream melt history. Inverting surfaceelevation for ice thickness using hydrostatic equilibriumin those areas is erroneous, and corresponding observationalevidence is presented at RBIS by comparing the hydrostaticallyinverted ice thickness with radar measurements. Themodel shows that channelized melting imprints the flow fieldcharacteristically, which can result in enhanced horizontalshearing across channels. This is exemplified for a channelat RBIS using observed surface velocities and opens up thepossibility to classify channelized melting from space, an importantstep towards incorporating these effects in ice–oceanmodels. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Shelf Ice Shelves The Cryosphere DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) Antarctic Buttress ENVELOPE(-57.083,-57.083,-63.550,-63.550) Roi Baudouin ENVELOPE(24.461,24.461,-70.438,-70.438) |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Géographie physique |
spellingShingle |
Géographie physique Drews, Reinhard Evolution of ice-shelf channels in Antarctic ice shelves |
topic_facet |
Géographie physique |
description |
Ice shelves buttress the continental ice flux andmediate ice–ocean interactions. They are often traversed bychannels in which basal melting is enhanced, impacting iceshelfstability. Here, channel evolution is investigated using atransient, three-dimensional full Stokes model and geophysicaldata collected on the Roi Baudouin Ice Shelf (RBIS),Antarctica. The modeling confirms basal melting as a feasiblemechanism for channel creation, although channels mayalso advect without melting for many tens of kilometers.Channels can be out of hydrostatic equilibrium dependingon their width and the upstream melt history. Inverting surfaceelevation for ice thickness using hydrostatic equilibriumin those areas is erroneous, and corresponding observationalevidence is presented at RBIS by comparing the hydrostaticallyinverted ice thickness with radar measurements. Themodel shows that channelized melting imprints the flow fieldcharacteristically, which can result in enhanced horizontalshearing across channels. This is exemplified for a channelat RBIS using observed surface velocities and opens up thepossibility to classify channelized melting from space, an importantstep towards incorporating these effects in ice–oceanmodels. SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Drews, Reinhard |
author_facet |
Drews, Reinhard |
author_sort |
Drews, Reinhard |
title |
Evolution of ice-shelf channels in Antarctic ice shelves |
title_short |
Evolution of ice-shelf channels in Antarctic ice shelves |
title_full |
Evolution of ice-shelf channels in Antarctic ice shelves |
title_fullStr |
Evolution of ice-shelf channels in Antarctic ice shelves |
title_full_unstemmed |
Evolution of ice-shelf channels in Antarctic ice shelves |
title_sort |
evolution of ice-shelf channels in antarctic ice shelves |
publishDate |
2015 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/200143 https://dipot.ulb.ac.be/dspace/bitstream/2013/200143/3/Drews2015b.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/200143/4/doi_183770.pdf |
long_lat |
ENVELOPE(-57.083,-57.083,-63.550,-63.550) ENVELOPE(24.461,24.461,-70.438,-70.438) |
geographic |
Antarctic Buttress Roi Baudouin |
geographic_facet |
Antarctic Buttress Roi Baudouin |
genre |
Antarc* Antarctic Antarctica Ice Shelf Ice Shelves The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica Ice Shelf Ice Shelves The Cryosphere |
op_source |
The Cryosphere, 9 (3 |
op_relation |
uri/info:doi/10.5194/tc-9-1169-2015 uri/info:scp/84930947880 https://dipot.ulb.ac.be/dspace/bitstream/2013/200143/3/Drews2015b.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/200143/4/doi_183770.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/200143 |
op_rights |
2 full-text file(s): info:eu-repo/semantics/openAccess | info:eu-repo/semantics/openAccess |
_version_ |
1766262203427586048 |