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 me...
Published in: | The Cryosphere |
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Online Access: | http://hdl.handle.net/2078.1/257963 https://doi.org/10.5194/tc-12-2167-2018 |
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ftunivlouvain:oai:dial.uclouvain.be:boreal:257963 2024-05-12T07:55:55+00:00 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 UCL - SST/ELI/ELIC - Earth & Climate 2018 http://hdl.handle.net/2078.1/257963 https://doi.org/10.5194/tc-12-2167-2018 eng eng Copernicus GmbH boreal:257963 http://hdl.handle.net/2078.1/257963 doi:10.5194/tc-12-2167-2018 urn:EISSN:1994-0424 info:eu-repo/semantics/openAccess The Cryosphere, Vol. 12, no.6, p. 2167-2174 (2018) Earth-Surface Processes Water Science and Technology info:eu-repo/semantics/article 2018 ftunivlouvain https://doi.org/10.5194/tc-12-2167-2018 2024-04-17T16:35:43Z 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 DIAL@UCLouvain (Université catholique de Louvain) East Antarctica The Cryosphere 12 6 2167 2174 |
institution |
Open Polar |
collection |
DIAL@UCLouvain (Université catholique de Louvain) |
op_collection_id |
ftunivlouvain |
language |
English |
topic |
Earth-Surface Processes Water Science and Technology |
spellingShingle |
Earth-Surface Processes Water Science and Technology 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 |
Earth-Surface Processes Water Science and Technology |
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. |
author2 |
UCL - SST/ELI/ELIC - Earth & Climate |
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 GmbH |
publishDate |
2018 |
url |
http://hdl.handle.net/2078.1/257963 https://doi.org/10.5194/tc-12-2167-2018 |
geographic |
East Antarctica |
geographic_facet |
East Antarctica |
genre |
Antarc* Antarctica East Antarctica The Cryosphere |
genre_facet |
Antarc* Antarctica East Antarctica The Cryosphere |
op_source |
The Cryosphere, Vol. 12, no.6, p. 2167-2174 (2018) |
op_relation |
boreal:257963 http://hdl.handle.net/2078.1/257963 doi:10.5194/tc-12-2167-2018 urn:EISSN:1994-0424 |
op_rights |
info:eu-repo/semantics/openAccess |
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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1798835800971935744 |