af80c82c-b6a0-4978-92e0-efe063c390af 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 2024-10-23 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 Land cover of Signy Island, consisting of rock outcrop, moraine, lakes, permanent ice and streams, digitised from February 2020 satellite imagery 2024-10-23 creation 2024-10-23 revision 2024-10-23 publication 2024-10-23 released 1.0 https://doi.org/10.5285/af80c82c-b6a0-4978-92e0-efe063c390af doi GB/NERC/BAS/PDC/01923 https://data.bas.ac.uk/ Please cite this item as: Gerrish, L., & Ireland, L. (2024). Land cover of Signy Island, consisting of rock outcrop, moraine, lakes, permanent ice and streams, digitised from February 2020 satellite imagery (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/af80c82c-b6a0-4978-92e0-efe063c390af Land cover of Signy Island, consisting of rock outcrop, moraine, lakes, permanent ice and streams. All data were manually digitised from a VHR (very high resolution) satellite image acquired on the 10th February 2020. WorldView-2 satellite image (c) 2020 Maxar Technologies. The datasets are available as polygon and point shapefiles and GeoPackages. The data were created to support the updated release of the British Antarctic Survey (BAS) Signy Island map (BAS, 2024) No credit. completed Gerrish, Laura British Antarctic Survey Researcher author Ireland, Louise 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 > Land Surface > Land Use/Land Cover > Land Cover EARTH SCIENCE > Land Surface > Land Use/Land Cover EARTH SCIENCE > Solid Earth > Rocks/Minerals 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 Signy Island South Orkney Islands lakes land cover rock outcrop theme South Orkney Islands Antarctica Signy Island Antarctica place Land cover Geology 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 None url url crossReference url url crossReference url url largerWorkCitation url url crossReference textTable eng utf8 environment geoscientificInformation imageryBaseMapsEarthCover -45.68996 -45.57515 -60.74871 -60.67132 2020-02-10 2020-02-10 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/zip application/octet-stream application/vnd.shp application/geopackage+sqlite3 bytes 1677722 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=af80c82c-b6a0-4978-92e0-efe063c390af WWW:LINK-1.0-http--link Get Data Download data download bytes 1677722 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=af80c82c-b6a0-4978-92e0-efe063c390af WWW:LINK-1.0-http--link Get Data Download data download bytes 1677722 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=af80c82c-b6a0-4978-92e0-efe063c390af WWW:LINK-1.0-http--link Get Data Download data download bytes 1677722 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=af80c82c-b6a0-4978-92e0-efe063c390af WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: The data were manually digitised from a VHR (very high resolution) satellite image acquired on the 10th February 2020. WorldView-2 satellite image (c) 2020 Maxar Technologies. The VHR image was licensed from Maxar with 4 bands. In ArcGIS Pro v3.3.0, an RGB composite was created and this was pansharpened using the higher spatial resolution (50 cm) panchromatic band. This pansharpened composite was then orthorectified to a 5 m Digital Elevation Model extracted from stereo VHR imagery acquired in March 2015. WorldView-3 satellite image (c) 2015 Maxar Technologies. Also in ArcGIS Pro, the land cover was manually digitised from the orthorectified, pansharpened image. The data creator's interpretation was used in this process and the accuracy cannot be guaranteed for all areas. Moraine and rock outcrop is particularly difficult to distinguish in certain locations. Some of the lakes are ephemeral and will not be present at all times of year or in every year. The streams were digitised in the same way and should always originate from either a lake or an area of permanent ice. The land cover and streams are clipped to a coastline of Signy Island, selected from the Antarctic Digital Database high resolution vector polygons of the Antarctic coastline, https://doi.org/10.5285/9b4fab56-4999-4fe1-b17f-1466e41151c4 The coordinate reference system of the data is UTM Zone 23S, EPSG 32723. The land cover dataset has an attribute field named 'surface' detailing the type of surface it is showing (rock, ice, lake, moraine) and another field named 'Name' which gives the name of the Lake, if named, with these selected from the UK Antarctic Place-names Committee gazetteer, accessed 20th June 2024. Data collection: Processing done using ArcGIS Pro (version 3.3.0) Data quality: The data has been manually interpreted and may contain misinterpretations. The data creator used their best knowledge of the island and with some assistance from those who have visited the island in recent years, but there may still be some errors. asNeeded completed