Global Bathymetry and Elevation Digital Elevation Model: SRTM30_PLUS v8 (30 arc sec, 1 km) reformatted as single GeoTiff (NERP TE 13.1 e-Atlas, source: UCSD)

• Other Authors: Australian Institute of Marine Science (isOwnedBy)
• Format: Dataset
• Language: unknown
• Published: data.gov.au
• Subjects: marine; Arctic; Eros; Scripps
• Online Access: https://researchdata.edu.au/global-bathymetry-elevation-source-ucsd/1942185; http://data.gov.au/dataset/9be2f191-934a-4580-93d8-c5773012d5a4

This dataset corresponds to a reformatting of the SRTM30_PLUS digital elevation dataset from 33 NetCDF files into a single GeoTiff for use in GIS applications. No other modifications to the data were done. The rest of this metadata describes the original SRTM30_PLUS dataset itself.\n\nThis dataset is a 30-arc second resolution global topography/bathymetry grid (SRTM30_PLUS) developed from a wide variety of data sources. Land and ice topography comes from the SRTM30 and ICESat topography, respectively. Ocean bathymetry is based on a new satellite-gravity model where the gravity-to-topography ratio is calibrated using 298 million edited soundings. The main contribution of this dataset is the compilation and editing of the raw soundings, which come from NOAA, individual scientists, SIO, NGA, JAMSTEC, IFREMER, GEBCO, and NAVOCEANO.\n\nThe SRTM30_PLUS dataset developed by Scripps Institute Of Oceanography, University of California San Diego (UCSD). \n\nLand data are based on the 1-km averages of topography derived from the USGS SRTM30 grided DEM data product created with data from the NASA Shuttle Radar Topography Mission. GTOPO30 data are used for high latitudes where SRTM data are not available.\n\nOcean data are based on the Smith and Sandwell global 1-minute grid between latitudes +/- 81 degrees. Higher resolution grids have been added from the LDEO Ridge Multibeam Synthesis Project, the JAMSTEC Data Site for Research Cruises, and the NGDC Coastal Relief Model. Arctic bathymetry is from the International Bathymetric Chart of the Oceans (IBCAO) [Jakobsson et al., 2003]. \n\nThis data consists of 33 files of global topography in the same format as the SRTM30 products distributed by the USGS EROS data center. The grid resolution is 30 second which is roughly one kilometer. In addition the global data are also available in a single large file ready for GMT and as 33 NetCDF files. The e-Atlas has also merged and formatted the data as a single GeoTiff file with overviews (1.6 GB).\n\nThe pixel-registered data are ...