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Directory Identifier: GRAVCD-minn
Directory Title: Gravity Data for Minnesota
Principal Investigator: Numerous

Contributing Organization: University of Minnesota
Minnesota Geological Survey
Institute of Technology
2642 University Avenue
St. Paul, MN 55114-1057

Summary: The gravity station data (55,907 records) were gathered by various governmental organizations (and academia) using a variety of methods. This data base was received in March 1993. Principal gravity parameters include Free-air Anomalies and Simple Bouguer Anomalies (no terrain correction applied). The observed gravity values are referenced to the International Gravity Standardization Net 1971 (IGSN 71) and the gravity anomaly computation uses the Geodetic Reference System 1967 (GRS 67) theoretical gravity formula. The spatial resolution of the data is randomly distributed within the boundaries of Minnesota.

CAVEAT: Note that some data points outside the Minnesota state boundary were fabricated (from other data sets), to allow generation of grid point values upto the state boundary. Per Tim Wahl & Val Chandler (7-1-93)

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