Arizona Complete Bouguer Gravity Anomaly Map
The complete-Bouguer gravity anomaly grid was compiled using data from 42,707 gravity stations in and adjacent to the state of Arizona. 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 500 m grid using minimum curvature techniques and are displayed with an illumination from the Northeast.
The grids for this map in various formats are available from the data directory as azcba.***
U.S. Department of the Interior
U.S. Geological Survey
This page is <URL: https://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-01-0081/html/arizona.htm>
Maintained by: Gene Ellis
Last Modified Monday, 15-May-2000
For more information about this report contact: Ron Sweeney