Directory Identifier: GRAVCD-colomb97
Directory Title: Gravity Data For Colombia 1997
Principal Investigator: Unidad de Geofisica
Contributing Organization: Instituto Geografico Agustin Codazzi(IGAC)
                           Dr. Myriam Ardila Torres
                           Subdirectora de Cartografia
                           Instituto Geografico Agustin Codazzi
                           Santafe de Bogota, D.C.

Summary: The gravity station data (9,050 records), were observed
and processed by the Instituto Geografico Agustin Codazzi(IGAC), in
Colombia from 1958 to 1996.  This data base was received in April,
1997.  Principal gravity parameters include Free-air anomalies and
both Simple and Complete Bouguer anomalies.  The gravity anomaly
values were computed using the GRS80 ellipsoid