Measurements of the gravitational field vary slightly from place to place due to the composition and structure of Earth's crust. This digital grid describes the complete Bouguer gravity anomaly for the conterminous US.
Show in a web browser window:
Show in Google Earth or other KML viewer:
Gravity_Anomaly.kmz (compressed (includes both Bouguer and isostatic anomaly) 1k bytes)
Show in your GIS using OGC web services:
https://mrdata.usgs.gov/services/gravity (WMS, version 1.3.0)
https://mrdata.usgs.gov/services/wfs/gravity (WFS, version 1.1.0)
Get the entire data set:
bouguer_sdd.e00.gz (ArcInfo interchange GRID 3.4 MB gzipped)
USgrv_cba_SDD_geog.tif (GeoTIFF (Geographic, NAD83) 11.4M bytes)
US_bouguer.zip (GeoTIFF (Geographic, NAD83) 0.9M bytes)
isograv.gxf.gz (Grid Exchange Format 3.1 MB gzipped)
isograv.xyz.gz (Simple XYZ grid format 6.1 MB gzipped)
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