Contributing Organization: U.S. Geological Survey
345 Middlefield Road, MS/977
Menlo Park, CA 94025

Summary: isores.bin - standard grid containing isostatic residual gravity map for U.S. Grid interval = 4 km. Projection is Albers (central meridian = 96 degrees West; base latitude = 0 degrees North). Sea level depth of compensation = 30.0 km, density contrast at depth = 0.35 g/cm^^3. Values are in milligals.

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 = 4,045,520 bytes

1300 columns X 772 rows = 1,003,600 data
4 bytes / data point = 4,014,400 bytes

The data are stored row wise starting in the upper left corner.

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, by divided by 100 to recover the original data.

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