Wyoming Bouguer Gravity Anomaly Map

The complete-Bouguer gravity anomaly grid was compiled using data from over 23622 gravity stations in and adjacent to the state of Wyoming.. These data were extracted from the gravity data base maintained by the National Geophysical Data Center (from Department of Defense unclassified data) (Hittleman and others, 1994) and augmented with data from the USGS and from several university theses and dissertations. Observed gravity relative to the IGSN-71 datum were reduced to the Bouguer anomaly using the 1967 gravity formula (Cordell and others, 1982) and a reduction density of 2.67 g/cc. Terrain corrections were calculated radially outward from each station to a distance of 167 km using a method developed by Plouff (1977). The data were converted to a 1-km grid using minimum curvature techniques.

The grids for this map in various formats are available from the data directory as grvcba.***

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