Directory Identifier: GRAVCD-isotop
Directory Title: U.S. Topographic Grid
Principal Investigator: Numerous
Contributing Organization: U.S. Geological Survey
                           345 Middlefield Road, MS/977
                           Menlo Park, CA 94025

Summary: isotop.bin - topographic data for conterminous U.S. 
projected on an 8 km grid.  Projection is Albers, central 
meridian = 96 degrees West, base latitude = 0 degrees North. 
Elevations are in meters.  

Data Records: The data are binary and are in 4 byte integers. The 
integer value must be divided by 100 to get the actual value with 
two digits to the right of the decimal point.

Original File = 5,674,160 bytes
                  740 columns X 476 rows  =   352,240 data
                  4 bytes / data point    = 1,408,960 bytes
The data are stored row wise starting in the upper left corner.
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NOTE: The binary files isores.bin, isoreg.bin, and isotop.bin 
were converted from the ASCII files on the Geophysics of North 
America CD-ROM by Ted Habermann. The data values were converted 
to 4 byte binary integers with two digits to the right of the 
decimal point. These integers must, therefore, be divided by 100 
to recover the original data.
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