634ee206-258f-4b47-9237-efff4ef9eedd 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 2021-09-13 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 Polarimetric ApRES data on a profile across Dome C, East Antarctica, 2013-2014 2021-09-13 creation 2021-09-13 revision 2021-09-13 publication 2021-09-13 released 1.0 https://doi.org/10.5285/634ee206-258f-4b47-9237-efff4ef9eedd doi GB/NERC/BAS/PDC/01560 https://data.bas.ac.uk/ Please cite this item as: Corr, H., Ritz, C., & Martin, C. (2021). Polarimetric ApRES data on a profile across Dome C, East Antarctica, 2013-2014 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/634ee206-258f-4b47-9237-efff4ef9eedd The radar data collected in 2013-2014 at Dome C, East Antarctica, aims to understand bulk preferred crystal orientation fabric near a dome. We measure changes in englacial birefringence and anisotropic scattering in 21 sites along a 36 km long profile across Dome C. These optical properties are obtained by analysing radar returns for different antenna orientations. More details can be found in Ershadi et al, 2021. Funding was provided by BAS National Capability and IPEV core funding. No credit. completed Corr, Hugh British Antarctic Survey Researcher author Ritz, Catherine University of Grenoble Alpes / CNRS Researcher author Martin, Carlos British Antarctic Survey 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 > Glacier Motion/Ice Sheet Motion EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Ice Sheets 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 ApRES Dome C fabric polarimetric radar theme Dome C Antarctica place Elevation 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 Data supplied under Open Government Licence v3.0 otherRestrictions No restrictions apply. url url crossReference doi doi crossReference doi doi crossReference url url crossReference textTable eng utf8 geoscientificInformation 122.90937 123.90654 -75.20126 -75.00079 2013-12-26 2014-01-16 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 text/plain text/csv application/x-hdf application/netcdf bytes 156028109 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=634ee206-258f-4b47-9237-efff4ef9eedd WWW:LINK-1.0-http--link Get Data Download data download bytes 156028109 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=634ee206-258f-4b47-9237-efff4ef9eedd WWW:LINK-1.0-http--link Get Data Download data download bytes 156028109 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=634ee206-258f-4b47-9237-efff4ef9eedd WWW:LINK-1.0-http--link Get Data Download data download bytes 156028109 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=634ee206-258f-4b47-9237-efff4ef9eedd WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: The optical properties of the englacial ice at each site where obtained by comparing the return with four orthogonal antenna orientations. If we define H as the direction perpendicular to the East-West profile described by the sites, and V the parallel direction to the profile; and we label each of the measurements with the two orientations of the transmitting and receiving antennas; the four orthogonal antenna orientations are HH,HV,VH and VV. The spatial resolution is determined by the location of the sites, 21 in a 36 km profile. The distance between sites is closer near Dome C, about 500 m, than farther away, 3 km or so. The vertical resolution depends on the quality of the radar return but it is related to the wavelength of the signal on ice, about 0.4 m. Data collection: Radar: ApRES (British Antarctic Survey's Autonomous phase-sensitive Radio-Echo Sounder) - chirps of 200 to 400 MHz in time intervals of 1 s, with 8 m between antennas. Model RMB1B SN012. (More details in the file headers.) Data quality: The quality of the data is similar in all the sites. It varies mainly with depth: In the top 2000 m the return is consistently above the noise level. Below 2000 m, the return signal is weak, apart from some isolated reflectors, up to the bedrock that is clear in all the records. The parallel antenna configuration measurements, HH and VV, have larger signal-to-noise ratio, than the perpendicular ones, HV and VH. This is because of experimental design as system configuration is identical in all the antenna orientations. asNeeded completed