Brief communication: Candidate sites of 1.5 Myr old ice 37 km southwest of the Dome C summit, East Antarctica
The search for ice as old as 1.5 Myr requires the identification of places that maximize our chances to retrieve old, well-resolved, undisturbed and datable ice. One of these locations is very likely southwest of the Dome C summit, where elevated bedrock makes the ice thin enough to limit basal melt...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00005424 2023-05-15T13:34:49+02:00 Brief communication: Candidate sites of 1.5 Myr old ice 37 km southwest of the Dome C summit, East Antarctica Passalacqua, Olivier Cavitte, Marie Gagliardini, Olivier Gillet-Chaulet, Fabien Parrenin, Frédéric Ritz, Catherine Young, Duncan 2018-06 electronic https://doi.org/10.5194/tc-12-2167-2018 https://noa.gwlb.de/receive/cop_mods_00005424 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00005381/tc-12-2167-2018.pdf https://tc.copernicus.org/articles/12/2167/2018/tc-12-2167-2018.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-12-2167-2018 https://noa.gwlb.de/receive/cop_mods_00005424 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00005381/tc-12-2167-2018.pdf https://tc.copernicus.org/articles/12/2167/2018/tc-12-2167-2018.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2018 ftnonlinearchiv https://doi.org/10.5194/tc-12-2167-2018 2022-02-08T22:59:33Z The search for ice as old as 1.5 Myr requires the identification of places that maximize our chances to retrieve old, well-resolved, undisturbed and datable ice. One of these locations is very likely southwest of the Dome C summit, where elevated bedrock makes the ice thin enough to limit basal melting. A 3-D ice flow simulation is used to calculate five selection criteria, which together delineate the areas with the most appropriate glaciological properties. These selected areas (a few square kilometers) lie on the flanks of a bedrock high, where a balance is found between risks of basal melting, stratigraphic disturbances and sufficient age resolution. Within these areas, several sites of potential 1.5 Myr old ice are proposed, situated on local bedrock summits or ridges. The trajectories of the ice particles towards these locations are short, and the ice flows over a smoothly undulating bedrock. These sites will help to choose where new high-resolution ground radar surveys should be conducted in upcoming field seasons. Article in Journal/Newspaper Antarc* Antarctica East Antarctica The Cryosphere Niedersächsisches Online-Archiv NOA East Antarctica The Cryosphere 12 6 2167 2174 |
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Niedersächsisches Online-Archiv NOA |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Passalacqua, Olivier Cavitte, Marie Gagliardini, Olivier Gillet-Chaulet, Fabien Parrenin, Frédéric Ritz, Catherine Young, Duncan Brief communication: Candidate sites of 1.5 Myr old ice 37 km southwest of the Dome C summit, East Antarctica |
topic_facet |
article Verlagsveröffentlichung |
description |
The search for ice as old as 1.5 Myr requires the identification of places that maximize our chances to retrieve old, well-resolved, undisturbed and datable ice. One of these locations is very likely southwest of the Dome C summit, where elevated bedrock makes the ice thin enough to limit basal melting. A 3-D ice flow simulation is used to calculate five selection criteria, which together delineate the areas with the most appropriate glaciological properties. These selected areas (a few square kilometers) lie on the flanks of a bedrock high, where a balance is found between risks of basal melting, stratigraphic disturbances and sufficient age resolution. Within these areas, several sites of potential 1.5 Myr old ice are proposed, situated on local bedrock summits or ridges. The trajectories of the ice particles towards these locations are short, and the ice flows over a smoothly undulating bedrock. These sites will help to choose where new high-resolution ground radar surveys should be conducted in upcoming field seasons. |
format |
Article in Journal/Newspaper |
author |
Passalacqua, Olivier Cavitte, Marie Gagliardini, Olivier Gillet-Chaulet, Fabien Parrenin, Frédéric Ritz, Catherine Young, Duncan |
author_facet |
Passalacqua, Olivier Cavitte, Marie Gagliardini, Olivier Gillet-Chaulet, Fabien Parrenin, Frédéric Ritz, Catherine Young, Duncan |
author_sort |
Passalacqua, Olivier |
title |
Brief communication: Candidate sites of 1.5 Myr old ice 37 km southwest of the Dome C summit, East Antarctica |
title_short |
Brief communication: Candidate sites of 1.5 Myr old ice 37 km southwest of the Dome C summit, East Antarctica |
title_full |
Brief communication: Candidate sites of 1.5 Myr old ice 37 km southwest of the Dome C summit, East Antarctica |
title_fullStr |
Brief communication: Candidate sites of 1.5 Myr old ice 37 km southwest of the Dome C summit, East Antarctica |
title_full_unstemmed |
Brief communication: Candidate sites of 1.5 Myr old ice 37 km southwest of the Dome C summit, East Antarctica |
title_sort |
brief communication: candidate sites of 1.5 myr old ice 37 km southwest of the dome c summit, east antarctica |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-12-2167-2018 https://noa.gwlb.de/receive/cop_mods_00005424 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00005381/tc-12-2167-2018.pdf https://tc.copernicus.org/articles/12/2167/2018/tc-12-2167-2018.pdf |
geographic |
East Antarctica |
geographic_facet |
East Antarctica |
genre |
Antarc* Antarctica East Antarctica The Cryosphere |
genre_facet |
Antarc* Antarctica East Antarctica 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-12-2167-2018 https://noa.gwlb.de/receive/cop_mods_00005424 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00005381/tc-12-2167-2018.pdf https://tc.copernicus.org/articles/12/2167/2018/tc-12-2167-2018.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-12-2167-2018 |
container_title |
The Cryosphere |
container_volume |
12 |
container_issue |
6 |
container_start_page |
2167 |
op_container_end_page |
2174 |
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1766058204564815872 |