USGS DEM (Digital elevation models) are arrays of regularly spaced elevation values referenced horizontally either to a Universal Transverse Mercator (UTM for 1-meter DEM) projection or to a geographic coordinate system (EPSG 4269 for 1/3 and 1/9 arc-second DEM, in units of decimal degrees, ...
who can guide me how to download 30m DEM data for my selected region Reply GISGeographysays: November 9, 2017 at 6:25 pm From USGS Earth Explorer, you can download SRTM 1 ArcSecond which is about 30-meter pixel size. https://gisgeography.com/srtm-shuttle-radar-topography-mission/ Reply ...
Digital Orthophotos Quadrangle (DOQ)is a geometrically-corrected photograph produced by the USGS. At about 1-meter pixel resolution, the spatial resolution is at 1:40,000. In the 1980s, GIS was starting to develop. As a result, the USGS started producing DOQs as a point of reference.DOQs...
ChartTiff offers Digital Maps, USGS and NAIP Aerial Photos, 3DEP, NED and DEM Elevation Data in various projections and file formats.
Derived from Landsat 8-9 Operational Land Imager (OLI) Level-1 (L1) reflective bands over water pixels at a 30-meter resolution. Landsat Provisional Aquatic Reflectance is a provisional science product with the potential to make a valuable contribution to aquatic science and environmental monitoring...
The source imagery may be black-and-white, natural color, color infrared, or color near infrared (4-band) with a pixel resolution of 1-meter or finer. With orthoimagery, the resolution refers to the distance on the ground represented by each pixel. Time_Period_of_Content: Time_Period_...
Feb. 8, 2007 -10 Meter USGS DEM Data Available on TopoDepotOnDVD and SkyTopo DVD Feb. 8, 2007Version 5.0 of TopoDepotOnDVD and SkyTopo DVD Released Comments: it's beautiful! thanks so much!! it works great in sketchup too. -diane ...
Alle ST-Produkte der Sammlung 2 werden mit einem Algorithmus für einen einzelnen Kanal erstellt, der vom Rochester Institute of Technology (RIT) und dem Jet Propulsion Laboratory (JPL) der National Aeronautics and Space Administration (NASA) gemeinsam entwickelt wurde. Die erfassten Datenstreifen...
7.5-minute DEM data consist of a regular array of elevations referenced horizontally on the Universal Transverse Mercator (UTM) coordinate system of the North American Datum of 1927 (NAD 27). These data are stored as profiles with 30-meter spacing along and between each profile. 15-minute ...
Error in a USGS 30-meter digital elevation model and its impact on terrain modeling. Journal of Hydrology 233, 154-173.Holmes, K.W.; Chadwick, O.A.; Kyriakidis, P.C. Error in a USGS 30-meter digital elevation model and its impact on terrain modeling. J. Hydrol. 2000, 233, 154-...