Mass balance of the Sor 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...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/321826 2023-11-12T04:03:14+01:00 Mass balance of the Sor Rondane glacial system, East Antarctica Callens, Denis Thonnard, Nicolas Lenaerts, Jan T. M. van Wessem, Jan M. van de Berg, Willem Jan Matsuoka, Kenichi Pattyn, Frank Sub Dynamics Meteorology Marine and Atmospheric Research 2015 application/pdf https://dspace.library.uu.nl/handle/1874/321826 en eng 0260-3055 https://dspace.library.uu.nl/handle/1874/321826 info:eu-repo/semantics/OpenAccess Accumulation Atmosphere/ice/ocean interactions Ice-sheet mass balance Radio-echo sounding Earth-Surface Processes Article 2015 ftunivutrecht 2023-11-01T23:13:11Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica Ice Sheet Utrecht University Repository Antarctic Dronning Maud Land East Antarctica Sor-Rondane ENVELOPE(25.000,25.000,-72.000,-72.000) The Antarctic |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
topic |
Accumulation Atmosphere/ice/ocean interactions Ice-sheet mass balance Radio-echo sounding Earth-Surface Processes |
spellingShingle |
Accumulation Atmosphere/ice/ocean interactions Ice-sheet mass balance Radio-echo sounding Earth-Surface Processes Callens, Denis Thonnard, Nicolas Lenaerts, Jan T. M. van Wessem, Jan M. van de Berg, Willem Jan Matsuoka, Kenichi Pattyn, Frank Mass balance of the Sor Rondane glacial system, East Antarctica |
topic_facet |
Accumulation Atmosphere/ice/ocean interactions Ice-sheet mass balance Radio-echo sounding Earth-Surface Processes |
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. |
author2 |
Sub Dynamics Meteorology Marine and Atmospheric Research |
format |
Article in Journal/Newspaper |
author |
Callens, Denis Thonnard, Nicolas Lenaerts, Jan T. M. van Wessem, Jan M. van de Berg, Willem Jan Matsuoka, Kenichi Pattyn, Frank |
author_facet |
Callens, Denis Thonnard, Nicolas Lenaerts, Jan T. M. van Wessem, Jan M. van de Berg, Willem Jan Matsuoka, Kenichi Pattyn, Frank |
author_sort |
Callens, Denis |
title |
Mass balance of the Sor Rondane glacial system, East Antarctica |
title_short |
Mass balance of the Sor Rondane glacial system, East Antarctica |
title_full |
Mass balance of the Sor Rondane glacial system, East Antarctica |
title_fullStr |
Mass balance of the Sor Rondane glacial system, East Antarctica |
title_full_unstemmed |
Mass balance of the Sor Rondane glacial system, East Antarctica |
title_sort |
mass balance of the sor rondane glacial system, east antarctica |
publishDate |
2015 |
url |
https://dspace.library.uu.nl/handle/1874/321826 |
long_lat |
ENVELOPE(25.000,25.000,-72.000,-72.000) |
geographic |
Antarctic Dronning Maud Land East Antarctica Sor-Rondane The Antarctic |
geographic_facet |
Antarctic Dronning Maud Land East Antarctica Sor-Rondane The Antarctic |
genre |
Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica Ice Sheet |
op_relation |
0260-3055 https://dspace.library.uu.nl/handle/1874/321826 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782336555014160384 |