Mass balance of the Sør Rondane glacial system, East Antarctica
Mass changes of polar ice sheets have an important societal impact, because they affect global sea level. Estimating the current mass budget of ice sheets is equivalent to determining the balance between surface mass gain through precipitation and outflow across the grounding line. For the Antarctic...
Main Authors: | , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2015
|
Subjects: | |
Online Access: | http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/219627 https://dipot.ulb.ac.be/dspace/bitstream/2013/219627/3/doi_203254.pdf |
id |
ftunivbruxelles:oai:dipot.ulb.ac.be:2013/219627 |
---|---|
record_format |
openpolar |
spelling |
ftunivbruxelles:oai:dipot.ulb.ac.be:2013/219627 2023-05-15T13:29:19+02:00 Mass balance of the Sør Rondane glacial system, East Antarctica Callens, Denis Thonnard, Nicolas Lenaerts, Jan T M Van Wessem, Jan J.M. Van De Berg, Willem Jan Matsuoka, Kenichi Pattyn, Frank 2015 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/219627 https://dipot.ulb.ac.be/dspace/bitstream/2013/219627/3/doi_203254.pdf en eng uri/info:doi/10.3189/2015AoG70A010 uri/info:scp/84932177793 https://dipot.ulb.ac.be/dspace/bitstream/2013/219627/3/doi_203254.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/219627 1 full-text file(s): info:eu-repo/semantics/restrictedAccess Annals of glaciology, 56 (70 Géologie et minéralogie Accumulation Atmosphere/ice/ocean interactions Ice-sheet mass balance Radio-echo sounding info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2015 ftunivbruxelles 2022-06-12T22:09:21Z Mass changes of polar ice sheets have an important societal impact, because they affect global sea level. Estimating the current mass budget of ice sheets is equivalent to determining the balance between surface mass gain through precipitation and outflow across the grounding line. For the Antarctic ice sheet, grounding line outflow is governed by oceanic processes and outlet glacier dynamics. In this study, we compute the mass budget of major outlet glaciers in the eastern Dronning Maud Land sector of the Antarctic ice sheet using the input/output method. Input is given by recent surface accumulation estimates (SMB) of the whole drainage basin. The outflow at the grounding line is determined from the radar data of a recent airborne survey and satellite-based velocities using a flow model of combined plug flow and simple shear. This approach is an improvement on previous studies, as the ice thickness is measured, rather than being estimated from hydrostatic equilibrium. In line with the general thickening of the ice sheet over this sector, we estimate the regional mass balance in this area at 3.15 ± 8.23 Gt a -1 according to the most recent SMB model results. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica Ice Sheet DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) Antarctic Dronning Maud Land East Antarctica Sør-Rondane ENVELOPE(25.000,25.000,-72.000,-72.000) The Antarctic |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Géologie et minéralogie Accumulation Atmosphere/ice/ocean interactions Ice-sheet mass balance Radio-echo sounding |
spellingShingle |
Géologie et minéralogie Accumulation Atmosphere/ice/ocean interactions Ice-sheet mass balance Radio-echo sounding Callens, Denis Thonnard, Nicolas Lenaerts, Jan T M Van Wessem, Jan J.M. Van De Berg, Willem Jan Matsuoka, Kenichi Pattyn, Frank Mass balance of the Sør Rondane glacial system, East Antarctica |
topic_facet |
Géologie et minéralogie Accumulation Atmosphere/ice/ocean interactions Ice-sheet mass balance Radio-echo sounding |
description |
Mass changes of polar ice sheets have an important societal impact, because they affect global sea level. Estimating the current mass budget of ice sheets is equivalent to determining the balance between surface mass gain through precipitation and outflow across the grounding line. For the Antarctic ice sheet, grounding line outflow is governed by oceanic processes and outlet glacier dynamics. In this study, we compute the mass budget of major outlet glaciers in the eastern Dronning Maud Land sector of the Antarctic ice sheet using the input/output method. Input is given by recent surface accumulation estimates (SMB) of the whole drainage basin. The outflow at the grounding line is determined from the radar data of a recent airborne survey and satellite-based velocities using a flow model of combined plug flow and simple shear. This approach is an improvement on previous studies, as the ice thickness is measured, rather than being estimated from hydrostatic equilibrium. In line with the general thickening of the ice sheet over this sector, we estimate the regional mass balance in this area at 3.15 ± 8.23 Gt a -1 according to the most recent SMB model results. SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Callens, Denis Thonnard, Nicolas Lenaerts, Jan T M Van Wessem, Jan J.M. Van De Berg, Willem Jan Matsuoka, Kenichi Pattyn, Frank |
author_facet |
Callens, Denis Thonnard, Nicolas Lenaerts, Jan T M Van Wessem, Jan J.M. Van De Berg, Willem Jan Matsuoka, Kenichi Pattyn, Frank |
author_sort |
Callens, Denis |
title |
Mass balance of the Sør Rondane glacial system, East Antarctica |
title_short |
Mass balance of the Sør Rondane glacial system, East Antarctica |
title_full |
Mass balance of the Sør Rondane glacial system, East Antarctica |
title_fullStr |
Mass balance of the Sør Rondane glacial system, East Antarctica |
title_full_unstemmed |
Mass balance of the Sør Rondane glacial system, East Antarctica |
title_sort |
mass balance of the sør rondane glacial system, east antarctica |
publishDate |
2015 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/219627 https://dipot.ulb.ac.be/dspace/bitstream/2013/219627/3/doi_203254.pdf |
long_lat |
ENVELOPE(25.000,25.000,-72.000,-72.000) |
geographic |
Antarctic Dronning Maud Land East Antarctica Sør-Rondane The Antarctic |
geographic_facet |
Antarctic Dronning Maud Land East Antarctica Sør-Rondane The Antarctic |
genre |
Annals of Glaciology Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica Ice Sheet |
genre_facet |
Annals of Glaciology Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica Ice Sheet |
op_source |
Annals of glaciology, 56 (70 |
op_relation |
uri/info:doi/10.3189/2015AoG70A010 uri/info:scp/84932177793 https://dipot.ulb.ac.be/dspace/bitstream/2013/219627/3/doi_203254.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/219627 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/restrictedAccess |
_version_ |
1765999902326784000 |