b89672c4-22fb-434a-9197-4da39d26782a 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 2024-05-29 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 radar measurements for the characterization of ice crystal orientation fabric and anisotropic rheology within Rutford Ice Stream, 2016/2017 to 2019/2020 2024-05-29 creation 2024-05-29 revision 2024-05-29 publication 2024-05-29 released 1.0 https://doi.org/10.5285/b89672c4-22fb-434a-9197-4da39d26782a doi GB/NERC/BAS/PDC/01853 https://data.bas.ac.uk/ NE/G014159/1 award NE/G013187/1 award Please cite this item as: Brisbourne, A., Schlegel, R., Jordan, T., & Zeising, O. (2025). Polarimetric radar measurements for the characterization of ice crystal orientation fabric and anisotropic rheology within Rutford Ice Stream, 2016/2017 to 2019/2020 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/b89672c4-22fb-434a-9197-4da39d26782a A ground-based radar survey consisting of 35 discrete quad-polarization measurement sites over three field seasons was undertaken on Rutford Ice Stream, West Antarctica. Sites A01 to A10 were collected on 20 January 2017, along a profile orientated perpendicular to the ice flow direction. The 10 sites are located between the central ice flowline and the ice-stream margin along a profile of length 8.5 km with the inter-site spacing decreasing toward the ice-stream margin. Sites B01 to B10 were collected on 05 December 2019, along a profile orientated parallel to the central flowline. The sites were surveyed with the first site 4 km upstream of site A01 and the inter-site distance spacing fixed at 4 km. Sites C01 to C11 were collected on 14 December 2018, and located between sites A01 and A02 at 200 m spacing. Sites D01-D04, collected on 25 January 2019, are downstream of A01 and form a diamond shape with 800 m spacing. At each site, polarimetric radar-sounding measurements were made using an autonomous phase-sensitive radio-echo sounder (ApRES), a frequency-modulated continuous-wave radar. The ApRES has a centre frequency of 300 MHz and a bandwidth of 200 MHz, which results in a range resolution of approximately 40 cm in ice. ApRES radar data were collected as part of the BEAMISH Project (NERC AFI award numbers NE/G014159/1 and NE/G013187/1). No credit. completed Brisbourne, Alex British Antarctic Survey Researcher author Schlegel, Rebecca University of Tubingen Researcher author Jordan, Tom University of Bristol Researcher author Zeising, Ole Alfred Wegener Institute for Polar and Marine Research 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 EARTH SCIENCE > Spectral/Engineering > Radar 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 anisotropy fabric ice flow polarimetry radar rheology theme Rutford Ice Stream 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. doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference url url crossReference url url largerWorkCitation url url largerWorkCitation url url largerWorkCitation textTable eng utf8 geoscientificInformation inlandWaters -84.55 -83.58 -78.17 -77.8 2017-01-20 2019-12-05 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 image/jpeg application/x-hdf application/netcdf bytes 1395864371 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=b89672c4-22fb-434a-9197-4da39d26782a WWW:LINK-1.0-http--link Get Data Download data download bytes 1395864371 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=b89672c4-22fb-434a-9197-4da39d26782a WWW:LINK-1.0-http--link Get Data Download data download bytes 1395864371 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=b89672c4-22fb-434a-9197-4da39d26782a WWW:LINK-1.0-http--link Get Data Download data download bytes 1395864371 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=b89672c4-22fb-434a-9197-4da39d26782a WWW:LINK-1.0-http--link Get Data Download data download bytes 1395864371 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=b89672c4-22fb-434a-9197-4da39d26782a WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: Polarimetric data were acquired in the quad-polarimetric manner as described in Young et al. (2021) but following the antenna layout and rotation scheme presented in apres-quadpol-field-rutford.jpg. The white open-structure (skeleton-slot) antennas were placed 8 m apart at their outside edge, aligned to magnetic North (40 deg E at the time of acquisition), with the transmit antenna at the northern end. For the initial measurements, antenna connectors are aligned pointing towards magnetic East (polarization termed VV). Five measurements were taken at each site, rotating one antenna at a time through 90 deg anti-clockwise (counter-clockwise) around its centre, starting with the transmit antenna. This results in a sequence of five measurements VV-HV-HH-VH-VV with the final VV (termed VV-rotated) in the opposite orientation to the initial VV. Alignment of the flags used to locate and orientate the antennas was done with a magnetic compass with uncertainty of +/- 5 deg. The raw field data are made available here. No data processing has been applied. Data collection: Radar: ApRES (British Antarctic Survey's Autonomous phase-sensitive Radio-Echo Sounder) - operated with a linear up-chirp from 200 to 400 MHz over the course of 1 s. An ensemble (burst) of 100 chirps was recorded for each polarimetric measurement. Data quality: Data quality allows for analysis of anisotropy within the upper half of the ice column (approximately 1000 m depth). asNeeded completed