Basal melt of the southern Filchner Ice Shelf, Antarctica
Basal melt of ice shelves is a key factor governing discharge of ice from the Antarctic Ice Sheet as a result of its effects on buttressing. Here, we use radio echo sounding to determine the spatial variability of the basal melt rate of the southern Filchner Ice Shelf, Antarctica, along the inflow o...
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Copernicus Publications
2022
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00060784 2023-05-15T13:49:21+02:00 Basal melt of the southern Filchner Ice Shelf, Antarctica Zeising, Ole Steinhage, Daniel Nicholls, Keith W. Corr, Hugh F. J. Stewart, Craig L. Humbert, Angelika 2022-04 electronic https://doi.org/10.5194/tc-16-1469-2022 https://noa.gwlb.de/receive/cop_mods_00060784 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00060357/tc-16-1469-2022.pdf https://tc.copernicus.org/articles/16/1469/2022/tc-16-1469-2022.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-16-1469-2022 https://noa.gwlb.de/receive/cop_mods_00060784 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00060357/tc-16-1469-2022.pdf https://tc.copernicus.org/articles/16/1469/2022/tc-16-1469-2022.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2022 ftnonlinearchiv https://doi.org/10.5194/tc-16-1469-2022 2022-05-01T23:09:44Z Basal melt of ice shelves is a key factor governing discharge of ice from the Antarctic Ice Sheet as a result of its effects on buttressing. Here, we use radio echo sounding to determine the spatial variability of the basal melt rate of the southern Filchner Ice Shelf, Antarctica, along the inflow of Support Force Glacier. We find moderate melt rates with a maximum of 1.13 m a−1 about 50 km downstream of the grounding line. The variability of the melt rates over distances of a few kilometres is low (all but one < 0.15 m a−1 at < 2 km distance), indicating that measurements on coarse observational grids are able to yield a representative melt rate distribution. A comparison with remote-sensing-based melt rates revealed that, for the study area, large differences were due to inaccuracies in the estimation of vertical strain rates from remote sensing velocity fields. These inaccuracies can be overcome by using modern velocity fields. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ice Shelves Support Force Glacier The Cryosphere Niedersächsisches Online-Archiv NOA Antarctic Filchner Ice Shelf ENVELOPE(-40.000,-40.000,-79.000,-79.000) Support Force Glacier ENVELOPE(-47.500,-47.500,-83.083,-83.083) The Antarctic The Cryosphere 16 4 1469 1482 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Zeising, Ole Steinhage, Daniel Nicholls, Keith W. Corr, Hugh F. J. Stewart, Craig L. Humbert, Angelika Basal melt of the southern Filchner Ice Shelf, Antarctica |
topic_facet |
article Verlagsveröffentlichung |
description |
Basal melt of ice shelves is a key factor governing discharge of ice from the Antarctic Ice Sheet as a result of its effects on buttressing. Here, we use radio echo sounding to determine the spatial variability of the basal melt rate of the southern Filchner Ice Shelf, Antarctica, along the inflow of Support Force Glacier. We find moderate melt rates with a maximum of 1.13 m a−1 about 50 km downstream of the grounding line. The variability of the melt rates over distances of a few kilometres is low (all but one < 0.15 m a−1 at < 2 km distance), indicating that measurements on coarse observational grids are able to yield a representative melt rate distribution. A comparison with remote-sensing-based melt rates revealed that, for the study area, large differences were due to inaccuracies in the estimation of vertical strain rates from remote sensing velocity fields. These inaccuracies can be overcome by using modern velocity fields. |
format |
Article in Journal/Newspaper |
author |
Zeising, Ole Steinhage, Daniel Nicholls, Keith W. Corr, Hugh F. J. Stewart, Craig L. Humbert, Angelika |
author_facet |
Zeising, Ole Steinhage, Daniel Nicholls, Keith W. Corr, Hugh F. J. Stewart, Craig L. Humbert, Angelika |
author_sort |
Zeising, Ole |
title |
Basal melt of the southern Filchner Ice Shelf, Antarctica |
title_short |
Basal melt of the southern Filchner Ice Shelf, Antarctica |
title_full |
Basal melt of the southern Filchner Ice Shelf, Antarctica |
title_fullStr |
Basal melt of the southern Filchner Ice Shelf, Antarctica |
title_full_unstemmed |
Basal melt of the southern Filchner Ice Shelf, Antarctica |
title_sort |
basal melt of the southern filchner ice shelf, antarctica |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/tc-16-1469-2022 https://noa.gwlb.de/receive/cop_mods_00060784 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00060357/tc-16-1469-2022.pdf https://tc.copernicus.org/articles/16/1469/2022/tc-16-1469-2022.pdf |
long_lat |
ENVELOPE(-40.000,-40.000,-79.000,-79.000) ENVELOPE(-47.500,-47.500,-83.083,-83.083) |
geographic |
Antarctic Filchner Ice Shelf Support Force Glacier The Antarctic |
geographic_facet |
Antarctic Filchner Ice Shelf Support Force Glacier The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ice Shelves Support Force Glacier The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ice Shelves Support Force Glacier The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-16-1469-2022 https://noa.gwlb.de/receive/cop_mods_00060784 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00060357/tc-16-1469-2022.pdf https://tc.copernicus.org/articles/16/1469/2022/tc-16-1469-2022.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-16-1469-2022 |
container_title |
The Cryosphere |
container_volume |
16 |
container_issue |
4 |
container_start_page |
1469 |
op_container_end_page |
1482 |
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1766251222428286976 |