Data Collections These fields are in addition to Dublin Core fields to describe MDL's data collections, including microdata, statistical data, and GIS data. Collection Which type of resource this is Geospatial Production Date 2000 Revision Date 2005 Geographic Keywords International Data Type Raster Keywords DIGITAL ELEVATION MODEL Coordinate System 4269, http://www.epsg-registry.org/ Datum: WGS84 vertical=WGS84/EGM96 geoid Scale 3 arc second (approx. 90m) 30 arc second (approx. 900m) Producer Name (or names) of the person who produced the video NASA / USGS Links <a href="https://utoronto.maps.arcgis.com/apps/mapviewer/index.html?webmap=456274186baf404daf321c81befcb382" title="Seamless Shuttle Radar Topography Mission (SRTM) 3 Arc Second (90 m): Index">Access 3 arc seconds (~90m) via ArcGIS Online data index</a><br /><br /><a href="https://utoronto.maps.arcgis.com/apps/mapviewer/index.html?webmap=5562a5b9793e4dd7b7c0d634af00afd8" title="https://utoronto.maps.arcgis.com/apps/mapviewer/index.html?webmap=5562a5b9793e4dd7b7c0d634af00afd8">Access 30 arc seconds (~900m) via ArcGIS Online data index</a><br /><br /><a href="https://search.earthdata.nasa.gov/search?q=SRTM%20DEM%20" title="SRTM DEM">Access via NASA EarthData</a><br /><br /><a href="https://earthexplorer.usgs.gov/" title="SRTM">Access 1 arc seconds (~30m) via USGS Earth Explorer</a> Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Seamless Shuttle Radar Topography Mission (SRTM) Digital Elevation Models (DEMs) Description An account of the resource The SRTM tiles are DEM data divided in to one degree blocks for the surface of the earth. The data MDL hosts is divided into two resolutions, one at 3 arc seconds (90m) and one at 30 arc seconds (900m). 80% of the earths surface is covered for all of the area between 60 degrees N and 53 degrees S. SRTM data is in WGS84 datum and the elevation units are in metres. Digital Elevation Data for creating contours and other spatial analysis. World DEM data. Identifier An unambiguous reference to the resource within a given context /NAP/UT/807.xml 4293885768 Creator An entity primarily responsible for making the resource NASA / USGS Source A related resource from which the described resource is derived <a href="https://icesat.gsfc.nasa.gov/icesat/tools/SRTM30_Documentation.html#:~:text=SRTM30%20is%20a%20near-global,as%20an%20upgrade%20to%20GTOPO30." title="SRTM30 Documentation">SRTM30 Documentation</a><br /><a href="https://lpdaac.usgs.gov/documents/179/SRTM_User_Guide_V3.pdf" title="SRTM User Guide">SRTM Collection User Guide (revised October 2015)</a> Publisher An entity responsible for making the resource available Land Information Worldwide Mapping, LLC Date A point or period of time associated with an event in the lifecycle of the resource 2000 Format The file format, physical medium, or dimensions of the resource <strong>1 arc-second (~30 m resolution)</strong> <br />The most recent version of the SRTM dataset offers a spatial resolution of 1 arc-second (approximately 30 m × 30 m). Its coverage is considered near-global, capturing roughly 80% of the Earth’s land surface. <br /><strong>3 arc-second (~90 m resolution)</strong> <br />In this dataset, 3 arc-seconds corresponds to a pixel size of about 90 m × 90 m. Each tile measures 1201 × 1201 pixels, covering an area of roughly 36 km × 36 km (for example, a local tile may cover the core of the Golden Horseshoe region). The data are provided in .bil format, which can be readily displayed in ArcGIS Pro. <br /><strong>30 arc-second (~1 km resolution)</strong> <br />A 30 arc-second grid corresponds to a pixel size of approximately 1 km × 1 km. These tiles are significantly larger than the 3 arc-second tiles in both spatial coverage and number of pixels. For instance, a “local” tile may be 4800 × 6000 pixels, covering all of Ontario and Quebec, parts of Manitoba and Nunavut, and extending from the northeastern United States up to Greenland. The files are provided in several formats including .jpg and .dem and can be directly used in ArcGIS Pro. Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Global, excluding north and south polar areas.