Hillshade created by Ecotrust based on the U.S. Geological Survey ( USGS) Digital Elevation Model (DEM) data files. DEMs are digital representations of cartographic information in a raster form. DEMs consist of a sampled array of elevations for a number of ground positions at regularly spaced intervals. The 70m DEM is equivalent to the 15-minute DEM data which corresponds to the USGS 1:63,360-scale topographic quadrangle map series of Alaska by unit size.
REQUIRED: The name of an organization or individual that developed the data set., REQUIRED: The date when the data set is published or otherwise made available for release., hill_70.Online Links:
- \\ANALISA-2K\D_Pray\CRC_new\data\terrain\hill_70
This is a Raster data set. It contains the following raster data types:
The map projection used is Albers Conical Equal Area.
Planar coordinates are encoded using row and column
Abscissae (x-coordinates) are specified to the nearest 70.099907
Ordinates (y-coordinates) are specified to the nearest 70.099907
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1927.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.400000.
The flattening of the ellipsoid used is 1/294.978698.
Sequential unique whole numbers that are automatically generated.
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Data sources used in this process:
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Downloadable Data
| Data format: | Size: 15.463 |
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