Topographic Shelf Waves Control Seasonal Melting Near Antarctic Ice Shelf Grounding Lines
The buttressing potential of ice shelves is modulated by changes in subshelf melting, in response to changing ocean conditions. We analyze the temporal variability in subshelf melting using an autonomous phase-sensitive radio-echo sounder near the grounding line of the Roi Baudouin Ice Shelf in East...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/296667 2023-05-15T13:37:30+02:00 Topographic Shelf Waves Control Seasonal Melting Near Antarctic Ice Shelf Grounding Lines Sun, Sainan Hattermann, Tore Pattyn, Frank Nicholls, Keith Drews, Reinhard Berger, Sophie 2019-08-01 2 full-text file(s): application/pdf | application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/296667 https://dipot.ulb.ac.be/dspace/bitstream/2013/296667/4/Sun2019_GRL.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/296667/3/ApRES_GRL_revised2.pdf en eng uri/info:doi/10.1029/2019GL083881 uri/info:scp/85071465855 https://dipot.ulb.ac.be/dspace/bitstream/2013/296667/4/Sun2019_GRL.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/296667/3/ApRES_GRL_revised2.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/296667 2 full-text file(s): info:eu-repo/semantics/closedAccess | info:eu-repo/semantics/openAccess Geophysical research letters, 46 (16 Géographie physique Sciences de la terre et du cosmos info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2019 ftunivbruxelles 2022-06-12T22:09:21Z The buttressing potential of ice shelves is modulated by changes in subshelf melting, in response to changing ocean conditions. We analyze the temporal variability in subshelf melting using an autonomous phase-sensitive radio-echo sounder near the grounding line of the Roi Baudouin Ice Shelf in East Antarctica. When combined with additional oceanographic evidence of seasonal variations in the stratification and the amplification of diurnal tides around the shelf break topography (Gunnerus Bank), the results suggest an intricate mechanism in which topographic waves control the seasonal melt rate variability near the grounding line. This mechanism has not been considered before and has the potential to enhance local melt rates without advecting different water masses. As topographic waves seem to strengthen in a stratified ocean, the freshening of Antarctic surface water, predicted by observations and models, is likely to increase future basal melting in this area. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Shelf Ice Shelves DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) Antarctic East Antarctica Gunnerus Bank ENVELOPE(33.000,33.000,-68.000,-68.000) 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 Sciences de la terre et du cosmos |
spellingShingle |
Géographie physique Sciences de la terre et du cosmos Sun, Sainan Hattermann, Tore Pattyn, Frank Nicholls, Keith Drews, Reinhard Berger, Sophie Topographic Shelf Waves Control Seasonal Melting Near Antarctic Ice Shelf Grounding Lines |
topic_facet |
Géographie physique Sciences de la terre et du cosmos |
description |
The buttressing potential of ice shelves is modulated by changes in subshelf melting, in response to changing ocean conditions. We analyze the temporal variability in subshelf melting using an autonomous phase-sensitive radio-echo sounder near the grounding line of the Roi Baudouin Ice Shelf in East Antarctica. When combined with additional oceanographic evidence of seasonal variations in the stratification and the amplification of diurnal tides around the shelf break topography (Gunnerus Bank), the results suggest an intricate mechanism in which topographic waves control the seasonal melt rate variability near the grounding line. This mechanism has not been considered before and has the potential to enhance local melt rates without advecting different water masses. As topographic waves seem to strengthen in a stratified ocean, the freshening of Antarctic surface water, predicted by observations and models, is likely to increase future basal melting in this area. SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Sun, Sainan Hattermann, Tore Pattyn, Frank Nicholls, Keith Drews, Reinhard Berger, Sophie |
author_facet |
Sun, Sainan Hattermann, Tore Pattyn, Frank Nicholls, Keith Drews, Reinhard Berger, Sophie |
author_sort |
Sun, Sainan |
title |
Topographic Shelf Waves Control Seasonal Melting Near Antarctic Ice Shelf Grounding Lines |
title_short |
Topographic Shelf Waves Control Seasonal Melting Near Antarctic Ice Shelf Grounding Lines |
title_full |
Topographic Shelf Waves Control Seasonal Melting Near Antarctic Ice Shelf Grounding Lines |
title_fullStr |
Topographic Shelf Waves Control Seasonal Melting Near Antarctic Ice Shelf Grounding Lines |
title_full_unstemmed |
Topographic Shelf Waves Control Seasonal Melting Near Antarctic Ice Shelf Grounding Lines |
title_sort |
topographic shelf waves control seasonal melting near antarctic ice shelf grounding lines |
publishDate |
2019 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/296667 https://dipot.ulb.ac.be/dspace/bitstream/2013/296667/4/Sun2019_GRL.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/296667/3/ApRES_GRL_revised2.pdf |
long_lat |
ENVELOPE(33.000,33.000,-68.000,-68.000) ENVELOPE(24.461,24.461,-70.438,-70.438) |
geographic |
Antarctic East Antarctica Gunnerus Bank Roi Baudouin |
geographic_facet |
Antarctic East Antarctica Gunnerus Bank Roi Baudouin |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Shelf Ice Shelves |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Shelf Ice Shelves |
op_source |
Geophysical research letters, 46 (16 |
op_relation |
uri/info:doi/10.1029/2019GL083881 uri/info:scp/85071465855 https://dipot.ulb.ac.be/dspace/bitstream/2013/296667/4/Sun2019_GRL.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/296667/3/ApRES_GRL_revised2.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/296667 |
op_rights |
2 full-text file(s): info:eu-repo/semantics/closedAccess | info:eu-repo/semantics/openAccess |
_version_ |
1766092634548338688 |