9555694e-c9f5-4bf8-a556-2ad9d29e55c6 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 2024-05-02 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 surveys at three nunataks in the Hudson Mountains in the Amundsen Sea sector of West Antarctica, December 2019 2024-05-02 creation 2024-05-02 revision 2024-05-02 publication 2024-05-02 released 1.0 https://doi.org/10.5285/9555694e-c9f5-4bf8-a556-2ad9d29e55c6 doi GB/NERC/BAS/PDC/01842 https://data.bas.ac.uk/ NE/S00663X/1 award NE/S006710/1 award Please cite this item as: Woodward, J., & Johnson, J. (2024). Ground-penetrating radar surveys at three nunataks in the Hudson Mountains in the Amundsen Sea sector of West Antarctica, December 2019 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/9555694e-c9f5-4bf8-a556-2ad9d29e55c6 This dataset contains data from three ground-penetrating radar surveys undertaken to image ice thickness and englacial stratigraphy during the 2019-20 Antarctic field season, as part of the International Thwaites Glacier Collaboration (funded by NERC and NSF). The ground-penetrating radar data are presented as SEG-Y, along with the GPS tracks of the surveys, presented as GPS Exchange Format (GPX). The subglacial extensions of ridges of three nunataks close to Pine Island and Larter Glaciers in the Hudson Mountains region were surveyed, with the aim of determining their suitability as subglacial bedrock drill sites. Those nunataks are Winkie Nunatak (74 degrees 51' 41.0" S/99 degrees 46' 49.4" W), Evans Knoll (74 degrees 51' 00.0" S/100 degrees 25' 00.0" W), and Webber Nunatak (74 degrees 47' 00.0" S/99 degrees 50' 00.0" W). This work was funded by NERC grants NE/S00663X/1 and NE/S006710/1. No credit. completed Woodward, John Northumbria University Researcher author Johnson, Joanne 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 Thickness/Ice Sheet Thickness 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 Hudson Mountains ITGC Pine Island Glacier West Antarctica geophysics ground-penetrating radar theme Hudson Mountains Antarctica Winkie Nunatak Antarctica Webber Nunatak Antarctica Evans Knoll Antarctica Pine Island Glacier 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 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 doi doi crossReference url url largerWorkCitation url url largerWorkCitation url url largerWorkCitation textTable eng utf8 inlandWaters -100.4177 -99.76277 -74.86565 -74.76484 2019-12-02 2019-12-10 97.0 435.0 urn:ogc:def:crs:EPSG::5714 MSL height Not specific to any location or epoch. Hydrography. 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/xml application/octet-stream bytes 56727962 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=9555694e-c9f5-4bf8-a556-2ad9d29e55c6 WWW:LINK-1.0-http--link Get Data Download data download bytes 56727962 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=9555694e-c9f5-4bf8-a556-2ad9d29e55c6 WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: A snowmobile was used to tow a PulseEKKO 1000 ice penetrating radar (GPR) system with 200 MHz antennae mounted on a wooden Nansen sledge. The snowmobile was travelling at speeds of 3-7km/hr with the system set to continuous collection mode with an in-field stack of 4. A hand-held Garmin GPS was used to locate the position of radar survey lines. All radar data are presented in their raw, unprocessed form. At Winkie Nunatak, a broad grid consisting of seven 400 m-long cross profiles was collected perpendicular to the ridge line. These profiles were spaced at 100 m intervals away from the visible ridge line. A detailed grid of five 300 m-long lines was then collected at 25 m intervals. At Evans Knoll six radar lines were collected perpendicular to the ridge at 7-15 m line spacing, and one line was run parallel to the ridge crest through the centre of the grid. At Webber Nunatak, eight radar lines were collected perpendicular to the ridge expression at 50 m spacing, and one line was run away from the ridge tip through the centre of the grid. The lines increased in length from 150 m to 500 m with increasing distance from bedrock, due to the orientation of the steep ice slope running northwest. Data collection: 1. Sensors & Software PulseEKKO GPR control unit with a 200 MHz antenna. 2. Garmin GPSMap78 hand-held GPS. Data quality: GPS was not linked to the radar during acquisition. Hand-held Garmin GPS was used to locate the position of radar survey lines during acquisition. asNeeded completed