|30-min x 30-min Terrestrial Mean Free-Air Anomalies
|The 30-min x 30-min Terrestrial Mean Free-Air Gravity Anomaly and Geoid Undulations
Data Base was compiled and developed by the Ohio State University. This data base
was received in March 1993. Principal gravity parameters include mean elevation, mean
free-air anomaly and source id. The gravity anomaly computation uses the Geodetic
Reference System 1967 (GRS 67) theoretical formula. The data are global in coverage
where data are available.