20 April 2009


SRTM30_Plus data source:
	David T. Sandwell, Walter H. F. Smith, and Joseph J. Becker Copyright 2008

	The Regents of the University of California

	All Rights Reserved
	http://topex.ucsd.edu/WWW_html/srtm30_plus.html

	Please also refer to the three files at SRTM30_PLUS download page for COPYRIGHT etc. information

	COPYRIGHT.txt
	README.V5.0.txt
	REFERENCES_SRTM30_PLUS.txt


Hillshading processing:
	GeoSage
	http://www.GeoSage.com/
	tech@www.GeoSage.com

	Image size: 43200 (width) by 21600 (height) pixels
	Image resolution: 30-arc-second (1km at the Equator)
	Image format: JPEG2000 (Compression ratio 1:50)


Image Viewer: 
	Any major GIS / remote sensing software


Image metadata produced by FWTools
	http://fwtools.maptools.org/

Driver: JP2ECW/ERMapper JPEG2000
Files: srtm30plus_hilldhading_B.jp2
Size is 43200, 21600
Coordinate System is:
GEOGCS["WGS 84",
    DATUM["WGS_1984",
        SPHEROID["WGS 84",6378137,298.2572235630016,
            AUTHORITY["EPSG","7030"]],
        AUTHORITY["EPSG","6326"]],
    PRIMEM["Greenwich",0],
    UNIT["degree",0.0174532925199433],
    AUTHORITY["EPSG","4326"]]
Origin = (-180.000000000000000,90.000000000000000)
Pixel Size = (0.008333333333333,-0.008333333333333)
Corner Coordinates:
Upper Left  (-180.0000000,  90.0000000) (180d 0'0.00"W, 90d 0'0.00"N)
Lower Left  (-180.0000000, -90.0000000) (180d 0'0.00"W, 90d 0'0.00"S)
Upper Right ( 180.0000000,  90.0000000) (180d 0'0.00"E, 90d 0'0.00"N)
Lower Right ( 180.0000000, -90.0000000) (180d 0'0.00"E, 90d 0'0.00"S)