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Alaska Gravity Data per 2 x 4 min Cell (96)
This 2? x 4? gravity density grid for Alaska displays the distribution of about 1.1 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? x 4? cell. Additional information is available at are particularly grateful to NGA (former National Imagery and Mapping Agency) for their assistance and their data contributions.