U.S. Gravity Data per 2 min Cell (96) |
This 2? gravity density grid for the conterminous United States displays the distribution
of the about 1.8 million terrestrial and marine gravity data held in the National
Geodetic Survey gravity data base in July 1996. These data were augmented by gravity
data contributions from NGA (former National Imagery and Mapping Agency (former Defence
Mapping Agency)) and by satellite altimeter-derived marine gravity anomalies computed
by Sandwell and Smith (1996). The values show the number of gravity data contained
in a given 2? cell. Additional information is available at http://www.ngs.noaa.gov/GEOID/geoid.htmlWe
are particularly grateful to NGA (former National Imagery and Mapping Agency) for
their assistance and their data contributions. |
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