Heard Island RADARSAT (2002) DEM

• Other Authors: Australian Antarctic Division (isOwnedBy)
• Format: Dataset
• Language: unknown
• Published: data.gov.au
• Subjects: AMD; AMD-AU; CEOS; DEM; EARTH SCIENCE - LAND SURFACE - TOPOGRAPHY - TERRAIN ELEVATION; InSAR; OCEAN - SOUTHERN OCEAN - HEARD AND MCDONALD ISLANDS; RADARSAT; RADARSAT-1; SAR - Synthetic Aperture Radar; elevation; heard; Antarctic; Southern Ocean; Heard Island; Heard; McDonald Islands; Antarc*; Australian Antarctic Division
• Online Access: https://researchdata.edu.au/heard-island-radarsat-2002-dem/1434823; http://data.gov.au/dataset/dd471f05-7d87-44ca-90cb-fd9d4d16c3ce

This dataset is a Digital Elevation Model (DEM) of Heard Island derived by interferometric processing from RADARSAT images acquired on 17 February 2002 and 13 March 2002. The DEM was created by a contractor for the Australian Antarctic Data Centre. The cell size is 10 metres.\r\n\r\nProcessing stages included:\r\n\r\n1 Detection of a coastline from a RADARSAT image of Heard Island acquired 24 January 2002 and rectified using ground control points provided by a second contractor.\r\n\r\n2 Generation of the interferometric SAR (InSAR) DEM using the RADARSAT images acquired on 17 February 2002 and 13 March 2002.\r\n\r\n3 Co-registration of the InSAR DEM with a DEM derived from stereoscopic RADARSAT images acquired in March and April of 1997 and described by the metadata record 'Heard Island RADARSAT (1997) DEM'.\r\n\r\n4 Merging of the InSAR DEM with the 1997 stereoscopic DEM and the coastline detected in stage 1.\r\n\r\nThe following are available for download from the Related URLs below:\r\n\r\n1 The final DEM in ArcInfo interchange or ArcInfo ascii formats.\r\n\r\n2 The rectified RADARSAT image of Heard Island acquired 24 January 2002. Rectified using ground control points and subsequently used in processing of the DEM.\r\n\r\n3 Contours generated from the DEM and the island polygon (coastline) extracted from the rectified RADARSAT image acquired 24 January 2002.\r\n\r\n4 A detailed deport describing the generation of the DEM.\r\n\r\n5 A report by\r\n\r\nDr Arko Lucieer\r\n\r\nCentre for Spatial Information Science\r\n\r\nSchool of Geography and Environmental Studies\r\n\r\nUniversity of Tasmania\r\n\r\nPrivate Bag 76\r\n\r\nHobart 7001\r\n\r\nTasmania, Australia\r\n\r\noutlining some errors and artefacts in the DEM.\r\n\r\nDr Lucieer produced this report while working for the Australian Antarctic Division.\r\n\r\nOn 3 July 2003 Henk Brolsma (Mapping Officer, Australian Antarctic Division) wrote the following email to the contractor who created the DEM. "What I'm really interested in are the 20 metre contours ...