4e94de3b-e156-4f6f-a854-8edeaa4e8302 eng utf8 dataset dataset NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom polardatacentre@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact 2019-08-14 ISO 19115 Geographic Information - Metadata ISO 19115:2003(E) European Petroleum Survey Group (EPSG) Geodetic Parameter Registry 2008-11-12 publication European Petroleum Survey Group EPSGadministrator@iogp.org https://www.epsg-registry.org/ EPSG Geodetic Parameter Dataset The EPSG Geodetic Parameter Dataset is a structured dataset of Coordinate Reference Systems and Coordinate Transformations, accessible through this online registry. information publisher urn:ogc:def:crs:EPSG::3031 6.18.3 Ground penetrating radar common-midpoint gathers from Antarctica's Larsen C Ice Shelf, Nov 2017, following the calving of Iceberg A68 2019-08-14 creation 2019-08-14 revision 2019-08-14 publication 2019-08-14 released 1.0 https://doi.org/10.5285/4e94de3b-e156-4f6f-a854-8edeaa4e8302 doi GB/NERC/BAS/PDC/01227 https://data.bas.ac.uk/ NE/E013414/1 award NE/R012334/1 award Please cite this item as: Booth, A., White, J., Pearce, E., Cornford, S., Brisbourne, A., Luckman, A., & Kulessa, B. (2019). Ground penetrating radar common-midpoint gathers from Antarctica's Larsen C Ice Shelf, Nov 2017, following the calving of Iceberg A68 (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/4e94de3b-e156-4f6f-a854-8edeaa4e8302 Ground penetrating radar (GPR) data were acquired at a site on Antarctica's Larsen C Ice Shelf, in November 2017. The acquisition was performed to measure radar anisotropy, a potential proxy for the stress condition in the upper ice shelf, following the calving of Iceberg A68 in July 2017. Two GPR common midpoint (CMP) gathers were acquired at Site S2, a site previously surveyed during the NERC funded NE/E013414/1 SOLIS project. These gathers were acquired first with GPR antennas extended in the flow-parallel direction (~ east), and then in the flow-orthogonal direction. The GPR system is a Sensors & Software pulseEKKO PRO, with 200 MHZ antennas. All acquisitions were performed by Dr Jim White (British Geological Survey) and Emma Pearce (University of Leeds, School of Earth and Environment), with support from BAS. The data is part of the NERC RACE project, NE/R012334/1. No credit. completed Booth, Adam University of Leeds Researcher author White, Jim British Geological Survey Researcher author Pearce, Emma University of Leeds Researcher author Cornford, Stephen Swansea University Researcher author Brisbourne, Alex British Antarctic Survey Researcher author Luckman, Adrian Swansea University Researcher author Kulessa, Bernd Swansea University Researcher author NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact asNeeded completed EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Ice Sheets EARTH SCIENCE > Cryosphere > Snow/Ice > Snow Stratigraphy theme Global Change Master Directory (GCMD) Science Keywords 2026-01-27 publication 23 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Greenbelt MD United States of America https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher Larsen anisotropy calving ground penetrating radar ice shelf theme Larsen C Ice Shelf, Antarctic Peninsula Antarctica place Elevation Meteorological geographical features theme GEMET - INSPIRE themes, version 1.0 2021-01-06 revision otherRestrictions no limitations to public access otherRestrictions no limitations license Open Government Licence v3.0 otherRestrictions This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/ otherRestrictions This data is governed by the NERC data policy and supplied under Open Government Licence v.3 otherRestrictions No restrictions apply. url url crossReference url url crossReference textTable eng utf8 climatologyMeteorologyAtmosphere environment geoscientificInformation -62.56891 -62.56891 -68.0041 -68.0041 2017-11-23 2017-11-23 It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk. NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information distributor application/netcdf application/pdf bytes 1992294 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=4e94de3b-e156-4f6f-a854-8edeaa4e8302 WWW:LINK-1.0-http--link Get Data Download data download bytes 1992294 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=4e94de3b-e156-4f6f-a854-8edeaa4e8302 WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: GPR data were recorded using a Sensors & Software pulseEKKO PRO, with 200 MHZ antennas. Both CMP gathers are 1000 ns long, with a temporal sampling interval of 0.2 ns. The minimum offset and trace interval in each CMP gather is 1 m; throughout, antennas are orientated in a broadside configuration, but the direction of their extension changes. LINE00 is orientated such that antennas extend in an ~easterly flow-parallel direction, whereas LINE01 is orthogonal. The acquisition is fully documented within the Observer's Logs which accompany these data, and in the headers of each file. Data collection: Sensors & Software pulseEKKO PRO, with 200 MHZ antennas. Data quality: No issues with data quality; both CMP gathers show clear hyperbolic reflections from within the firn column. No issues with antenna mislocation or static artefacts: the first-break of the airwave defines the expected velocity of 0.3 m/ns. asNeeded completed