|Maine Onshore Complete Bouguer Gravity Anomaly Data
|The gravity station data (18,461 records) were compiled by the U. S. Geological Survey.
This data base was received on February 23, 1993. Principal gravity parameters include
observed gravity, Complete Bouguer Gravity anomalies and Free-air anomalies. The observed
gravity values are believed referenced to the International Gravity Standardization
Net 1971 (IGSN 71). It is also believed the gravity anomaly computation uses the Geodetic
Reference System 1967 (GRS 67) theoretical gravity formula.