e5a119c7-15be-4ad8-bf70-6cc8d112af87 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 2020-11-16 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 Satellite-derived velocity maps for Larsen C Ice Shelf, Antarctica, between November 2017-April 2019 2020-11-16 creation 2020-11-16 revision 2020-11-16 publication 2020-11-16 released 1.0 https://doi.org/10.5285/e5a119c7-15be-4ad8-bf70-6cc8d112af87 doi GB/NERC/BAS/PDC/01433 https://data.bas.ac.uk/ NE/R012334/1 award Please cite this item as: Luckman, A. (2020). Satellite-derived velocity maps for Larsen C Ice Shelf, Antarctica, between November 2017-April 2019 (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/e5a119c7-15be-4ad8-bf70-6cc8d112af87 Velocity maps were derived, for regions of Larsen C ice shelf, from satellite imagery spanning the period November 2017 to April 2019. This period was selected to monitor any change in the velocity field of Larsen C, in the months following the calving of iceberg A68 from the front of the ice shelf. The archive contains two sets of maps. The first are derived from Sentinel-1 satellite data, and span the complete ice shelf for the full 18-month epoch. The second are derived from TerraSAR-X data, and show high-resolution velocity trends between 2017 and 2018, covering the frontal region of Larsen C ice shelf. The maps were produced by Professor Adrian Luckman, Swansea University. The data is part of the NERC RACE project, NE/R012334/1. No credit. completed Luckman, Adrian 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 > Glacier Motion/Ice Sheet Motion EARTH SCIENCE > Cryosphere > Snow/Ice > Ice Velocity EARTH SCIENCE > Cryosphere > Glaciers/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 Larsen flow ice shelf iceberg calving satellite velocity theme Larsen C Ice Shelf 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 supplied under Open Government Licence v3.0 otherRestrictions No restrictions apply. doi doi crossReference doi doi crossReference url url crossReference textTable eng utf8 climatologyMeteorologyAtmosphere environment geoscientificInformation imageryBaseMapsEarthCover -67.1 -58.9 -69.5 -65.4 2017-11-01 2019-04-30 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 image/tiff bytes 3543348019 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=e5a119c7-15be-4ad8-bf70-6cc8d112af87 WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: Data was acquired by TerraSAR-X and Sentinel-1 satellites. The TerraSAR-X data acquisitions were ordered specifically for the RACE68 Project. Standard 'feature tracking' algorithms were applied to derive ice surface velocity. Key parameters in the feature tracking were: TerraSAR-X: window size 500 x 500 (pixels ~2m resolution), sample spacing of 20 pixels. Sentinel-1: window size 416 x 128 (pixels ~10m resolution), sample spacing of 10 pixels. Data collection: Feature tracking was applied using Gamma Software with a December 2017 license. Data quality: Velocity retrieval error is generally found to be one tenth of a pixel or better over the repeat period between images, depending on how surface conditions (melt, snowfall) have changed over that period. For these datasets, therefore, the error will be approximately: TerraSAR-X: 0.2m (2m resolution x 0.1) over 11 days, or ~0.02 m/day. Sentinel-1: 1m (10m resolution x 0.1) over 6 days, or ~0.2 m/day. asNeeded completed