Optimal site selection for a high-resolution ice core record in East Antarctica
Ice cores provide some of the best-dated and most comprehensive proxy records, as they yield a vast and growing array of proxy indicators. Selecting a site for ice core drilling is nonetheless challenging, as the assessment of potential new sites needs to consider a variety of factors. Here, we demo...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00013888 2023-05-15T13:34:48+02:00 Optimal site selection for a high-resolution ice core record in East Antarctica Vance, Tessa R. Roberts, Jason L. Moy, Andrew D. Curran, Mark A. J. Tozer, Carly R. Gallant, Ailie J. E. Abram, Nerilie J. van Ommen, Tas D. Young, Duncan A. Grima, Cyril Blankenship, Don D. Siegert, Martin J. 2016-03 electronic https://doi.org/10.5194/cp-12-595-2016 https://noa.gwlb.de/receive/cop_mods_00013888 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013844/cp-12-595-2016.pdf https://cp.copernicus.org/articles/12/595/2016/cp-12-595-2016.pdf eng eng Copernicus Publications Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-12-595-2016 https://noa.gwlb.de/receive/cop_mods_00013888 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013844/cp-12-595-2016.pdf https://cp.copernicus.org/articles/12/595/2016/cp-12-595-2016.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2016 ftnonlinearchiv https://doi.org/10.5194/cp-12-595-2016 2022-02-08T22:55:25Z Ice cores provide some of the best-dated and most comprehensive proxy records, as they yield a vast and growing array of proxy indicators. Selecting a site for ice core drilling is nonetheless challenging, as the assessment of potential new sites needs to consider a variety of factors. Here, we demonstrate a systematic approach to site selection for a new East Antarctic high-resolution ice core record. Specifically, seven criteria are considered: (1) 2000-year-old ice at 300 m depth; (2) above 1000 m elevation; (3) a minimum accumulation rate of 250 mm years−1 IE (ice equivalent); (4) minimal surface reworking to preserve the deposited climate signal; (5) a site with minimal displacement or elevation change in ice at 300 m depth; (6) a strong teleconnection to midlatitude climate; and (7) an appropriately complementary relationship to the existing Law Dome record (a high-resolution record in East Antarctica). Once assessment of these physical characteristics identified promising regions, logistical considerations (for site access and ice core retrieval) were briefly considered. We use Antarctic surface mass balance syntheses, along with ground-truthing of satellite data by airborne radar surveys to produce all-of-Antarctica maps of surface roughness, age at specified depth, elevation and displacement change, and surface air temperature correlations to pinpoint promising locations. We also use the European Centre for Medium-Range Weather Forecast ERA 20th Century reanalysis (ERA-20C) to ensure that a site complementary to the Law Dome record is selected. We find three promising sites in the Indian Ocean sector of East Antarctica in the coastal zone from Enderby Land to the Ingrid Christensen Coast (50–100° E). Although we focus on East Antarctica for a new ice core site, the methodology is more generally applicable, and we include key parameters for all of Antarctica which may be useful for ice core site selection elsewhere and/or for other purposes. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Enderby Land ice core Ingrid Christensen Coast Niedersächsisches Online-Archiv NOA Antarctic Christensen ENVELOPE(47.867,47.867,-67.967,-67.967) East Antarctica Indian Ingrid Christensen Coast ENVELOPE(77.000,77.000,-69.500,-69.500) Law Dome ENVELOPE(112.833,112.833,-66.733,-66.733) Climate of the Past 12 3 595 610 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Vance, Tessa R. Roberts, Jason L. Moy, Andrew D. Curran, Mark A. J. Tozer, Carly R. Gallant, Ailie J. E. Abram, Nerilie J. van Ommen, Tas D. Young, Duncan A. Grima, Cyril Blankenship, Don D. Siegert, Martin J. Optimal site selection for a high-resolution ice core record in East Antarctica |
topic_facet |
article Verlagsveröffentlichung |
description |
Ice cores provide some of the best-dated and most comprehensive proxy records, as they yield a vast and growing array of proxy indicators. Selecting a site for ice core drilling is nonetheless challenging, as the assessment of potential new sites needs to consider a variety of factors. Here, we demonstrate a systematic approach to site selection for a new East Antarctic high-resolution ice core record. Specifically, seven criteria are considered: (1) 2000-year-old ice at 300 m depth; (2) above 1000 m elevation; (3) a minimum accumulation rate of 250 mm years−1 IE (ice equivalent); (4) minimal surface reworking to preserve the deposited climate signal; (5) a site with minimal displacement or elevation change in ice at 300 m depth; (6) a strong teleconnection to midlatitude climate; and (7) an appropriately complementary relationship to the existing Law Dome record (a high-resolution record in East Antarctica). Once assessment of these physical characteristics identified promising regions, logistical considerations (for site access and ice core retrieval) were briefly considered. We use Antarctic surface mass balance syntheses, along with ground-truthing of satellite data by airborne radar surveys to produce all-of-Antarctica maps of surface roughness, age at specified depth, elevation and displacement change, and surface air temperature correlations to pinpoint promising locations. We also use the European Centre for Medium-Range Weather Forecast ERA 20th Century reanalysis (ERA-20C) to ensure that a site complementary to the Law Dome record is selected. We find three promising sites in the Indian Ocean sector of East Antarctica in the coastal zone from Enderby Land to the Ingrid Christensen Coast (50–100° E). Although we focus on East Antarctica for a new ice core site, the methodology is more generally applicable, and we include key parameters for all of Antarctica which may be useful for ice core site selection elsewhere and/or for other purposes. |
format |
Article in Journal/Newspaper |
author |
Vance, Tessa R. Roberts, Jason L. Moy, Andrew D. Curran, Mark A. J. Tozer, Carly R. Gallant, Ailie J. E. Abram, Nerilie J. van Ommen, Tas D. Young, Duncan A. Grima, Cyril Blankenship, Don D. Siegert, Martin J. |
author_facet |
Vance, Tessa R. Roberts, Jason L. Moy, Andrew D. Curran, Mark A. J. Tozer, Carly R. Gallant, Ailie J. E. Abram, Nerilie J. van Ommen, Tas D. Young, Duncan A. Grima, Cyril Blankenship, Don D. Siegert, Martin J. |
author_sort |
Vance, Tessa R. |
title |
Optimal site selection for a high-resolution ice core record in East Antarctica |
title_short |
Optimal site selection for a high-resolution ice core record in East Antarctica |
title_full |
Optimal site selection for a high-resolution ice core record in East Antarctica |
title_fullStr |
Optimal site selection for a high-resolution ice core record in East Antarctica |
title_full_unstemmed |
Optimal site selection for a high-resolution ice core record in East Antarctica |
title_sort |
optimal site selection for a high-resolution ice core record in east antarctica |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/cp-12-595-2016 https://noa.gwlb.de/receive/cop_mods_00013888 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013844/cp-12-595-2016.pdf https://cp.copernicus.org/articles/12/595/2016/cp-12-595-2016.pdf |
long_lat |
ENVELOPE(47.867,47.867,-67.967,-67.967) ENVELOPE(77.000,77.000,-69.500,-69.500) ENVELOPE(112.833,112.833,-66.733,-66.733) |
geographic |
Antarctic Christensen East Antarctica Indian Ingrid Christensen Coast Law Dome |
geographic_facet |
Antarctic Christensen East Antarctica Indian Ingrid Christensen Coast Law Dome |
genre |
Antarc* Antarctic Antarctica East Antarctica Enderby Land ice core Ingrid Christensen Coast |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Enderby Land ice core Ingrid Christensen Coast |
op_relation |
Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-12-595-2016 https://noa.gwlb.de/receive/cop_mods_00013888 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013844/cp-12-595-2016.pdf https://cp.copernicus.org/articles/12/595/2016/cp-12-595-2016.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/cp-12-595-2016 |
container_title |
Climate of the Past |
container_volume |
12 |
container_issue |
3 |
container_start_page |
595 |
op_container_end_page |
610 |
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1766057722181058560 |