Painer Florian florian.painer@awi.de Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 Eberhard Karls Universität Tübingen https://www.uni-tuebingen.de/en/university.html https://ror.org/03a1kwz48 Drury Martyn R 0000-0002-2246-2009 Utrecht University UU https://www.uu.nl/ https://ror.org/04pp8hn57 Hamers Maartje F m.f.hamers@uu.nl Utrecht University UU https://www.uu.nl/ https://ror.org/04pp8hn57 Weikusat Ilka Ilka.Weikusat@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/ilka-weikusat.html 0000-0002-3023-6036 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 2026 Electron Backscatter Diffraction analysis on air hydrates of the EDML ice core dataset https://doi.pangaea.de/10.1594/PANGAEA.992544 2026-04-09T08:37:31 In the deeper part of polar ice sheets, air hydrates are the primary air inclusions. They trap most of the ancient air molecules used for paleoclimatic reconstructions in their crystal structure. This dataset presents the first Electron Backscatter Diffraction (EBSD) measurements on air hydrates included in the EDML ice core. The sample was originally located at 2045.3 m depth. EBSD is a technique to characterize the microstructure of materials, which includes the precise determination of crystallographic orientations of measured materials. The measurements were taken by Florian Painer, Martyn Drury and Maartje Hamers at the University of Utrecht. The aim was to investigate the crystallographic nature and measure the crystallographic orientation of air hydrates included in polar ice. We thank Eric Hellebrand and Erik Betz-Güttner for their support in operating the Cryo-SEM. Access to the Cryo-SEM at MINT-UU (Utrecht University) was provided by EPOS-NL Facility Access, supported by the Dutch Research Council (NWO). Weikusat Ilka Ilka.Weikusat@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/ilka-weikusat.html 0000-0002-3023-6036 de Winter Niels J niels.de.winter@vub.be 0000-0002-1453-5407 Pennock Gillian M Hayles Michael F Schneijdenberg Chris T W M C.T.W.M.Schneijdenberg@uu.nl https://www.uu.nl/staff/CTWMSchneijdenberg Drury Martyn R 0000-0002-2246-2009 2011 Cryogenic EBSD on ice: preserving a stable surface in a low pressure SEM journal article Journal of Microscopy 242(3) https://doi.org/10.1111/j.1365-2818.2010.03471.x 295-310 0.0684 0.0684 -75.0025 -75.0025 0.0684 -75.0025 2024-05-02T13:53:00 2024-05-02T15:58:00 2891.7 2891.7 Horizon 2020 H2020 https://ec.europa.eu/programmes/horizon2020/ https://doi.org/10.13039/501100007601 955750 Research and training network on understanding Deep icE corE Proxies to Infer past antarctiC climatE dynamics (DEEPICE) doi:10.3030/955750 EDML EPICA Dronning Maud Land, DML28C01_00 -75.0025 0.0684 2891.7 2001-01-10T00:00:00 2006-01-17T00:00:00 2774.15 m EPICA-Campaigns 1999-01-01 2005-01-01 Kohnen Station https://doi.org/10.17815/jlsrf-2-152 EPICA drill EDRILL Elevation is given with reference to WGS84 373 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Sample code/label Sample label Painer Florian florian.painer@awi.de Sample label DATE/TIME Date/Time http://en.wikipedia.org/wiki/ISO_8601 Time T http://dbpedia.org/resource/Time Painer Florian florian.painer@awi.de Date/Time Temperature, device T Device °C Temperature Θ http://dbpedia.org/resource/Temperature Cryo Preparation System, Quorum Technologies, PP3010 Painer Florian florian.painer@awi.de cold stage temperature of scanning electron microscope (SEM) T Device [°C] (cold stage temperature of sca...) Image IMAGE Scanning electron microscope (SEM), Zeiss, Gemini 450 Painer Florian florian.painer@awi.de SEM image IMAGE (SEM image, Scanning electron ...) Site Site site AZtec software, Oxford Instruments Painer Florian florian.painer@awi.de EBSD site Site (EBSD site, AZtec software, Ox...) Point ID Point ID AZtec software, Oxford Instruments Painer Florian florian.painer@awi.de EBSD point Point ID (EBSD point, AZtec software, O...) Phase Phase phase http://purl.obolibrary.org/obo/PATO_0000083 AZtec software, Oxford Instruments Painer Florian florian.painer@awi.de Phase (AZtec software, Oxford Instru...) Angle Angle deg Angle http://dbpedia.org/resource/Angle Plane Angle http://dbpedia.org/resource/Plane_angle AZtec software, Oxford Instruments Painer Florian florian.painer@awi.de Euler angle 1 (Z) Angle [deg] (Euler angle 1 (Z), AZtec soft...) Angle Angle deg Angle http://dbpedia.org/resource/Angle Plane Angle http://dbpedia.org/resource/Plane_angle AZtec software, Oxford Instruments Painer Florian florian.painer@awi.de Euler angle 2 (X') Angle [deg] (Euler angle 2 (X'), AZtec sof...) Angle Angle deg Angle http://dbpedia.org/resource/Angle Plane Angle http://dbpedia.org/resource/Plane_angle AZtec software, Oxford Instruments Painer Florian florian.painer@awi.de Euler angle 3 (Z'') Angle [deg] (Euler angle 3 (Z''), AZtec so...) Image IMAGE AZtec software, Oxford Instruments Painer Florian florian.painer@awi.de EBSD pattern IMAGE (EBSD pattern, AZtec software,...) Image IMAGE AZtec software, Oxford Instruments Painer Florian florian.painer@awi.de EBSD pattern indexed IMAGE (EBSD pattern indexed, AZtec s...) Comment Comment Painer Florian florian.painer@awi.de Comment CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels air hydrates Antarctica Cryo-SEM EBSD analysis Ice core author106745 author31127 author31128 author36579 author50788 author62725 author62726 author94472 award2104 basis4266 campaign26995 curlevel30 event2190883 funder20475 geocode1599 geocode1600 geocode1601 geocode8128 inst22612 inst2519 inst32 journal9213 license21 method11001 method18804 method18805 method18806 param121202 param150836 param1570 param48491 param50675 param535754 param547814 param790 pi106745 ref92511 term1074108 term37810 term43765 term43915 term43972 term43975 term47208 term47590 term60817 term76470 term77194