Optimal Site Selection for a High-Resolution Ice Core Record in East Antarctica

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dc.contributor.utaustinauthorYoung, Duncan A.en_US
dc.contributor.utaustinauthorGrima, Cyrilen_US
dc.contributor.utaustinauthorBlankenship, Don D.en_US
dc.creatorVance, Tessa R.en_US
dc.creatorRoberts, Jason L.en_US
dc.creatorMoy, Andrew D.en_US
dc.creatorCurran, Mark A. J.en_US
dc.creatorTozer, Carly R.en_US
dc.creatorGallant, Ailie J. E.en_US
dc.creatorAbram, Nerilie J.en_US
dc.creatorvan Ommen, Tas D.en_US
dc.creatorYoung, Duncan A.en_US
dc.creatorGrima, Cyrilen_US
dc.creatorBlankenship, Don D.en_US
dc.creatorSiegert, Martin J.en_US
dc.date.accessioned2016-09-23T18:04:33Z
dc.date.available2016-09-23T18:04:33Z
dc.date.issued2016-03en_US
dc.description.abstractIce 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 In-grid Christensen Coast (50-100 degrees 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.en_US
dc.description.departmentEarth and Planetary Sciencesen_US
dc.description.sponsorshipUK Natural Environment Research Council NE/D003733/1en_US
dc.description.sponsorshipNSF ANT-0733025en_US
dc.description.sponsorshipJackson School of Geosciencesen_US
dc.description.sponsorshipG. Unger Vetlesen Foundationen_US
dc.description.sponsorshipAustralian Antarctic Division ASAC 3103, 4077, 4346en_US
dc.description.sponsorshipAustralian Government's Cooperative Research Centres Programme through the Antarctic Climate and Ecosystems Cooperative Research Centre (ACE CRC) PAGES WCRP Polar Climate Predictability Initiative (PCPI) Research Programen_US
dc.identifierdoi:10.15781/T29882P2D
dc.identifier.citationVance, Tessa R., Jason L. Roberts, Andrew D. Moy, Mark AJ Curran, Carly R. Tozer, Ailie JE Gallant, Nerilie J. Abram et al. "Optimal site selection for a high-resolution ice core record in East Antarctica." Climate of the Past 12, no. 3 (Mar., 2016): 595.en_US
dc.identifier.doi10.5194/cp-12-595-2016en_US
dc.identifier.issn1814-9324en_US
dc.identifier.urihttp://hdl.handle.net/2152/41007
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialClimate of the Pasten_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.rights.restrictionOpenen_US
dc.subjectlambert glacier basinen_US
dc.subjectsurface mass-balanceen_US
dc.subjectmulti-decadal variabilityen_US
dc.subjectsnow accumulation ratesen_US
dc.subjectsouthern annular modeen_US
dc.subjectwilhelm-ii-landen_US
dc.subjectlawen_US
dc.subjectdomeen_US
dc.subjectclimate variabilityen_US
dc.subjectsheeten_US
dc.subjectensoen_US
dc.subjectgeosciences, multidisciplinaryen_US
dc.subjectmeteorology & atmospheric sciencesen_US
dc.titleOptimal Site Selection for a High-Resolution Ice Core Record in East Antarcticaen_US
dc.typeArticleen_US

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