Bouguer anomaly

In geodesy and geophysics, the Bouguer anomaly is computed from a free-air anomaly by computationally removing from it the attraction of the terrain, the Bouguer reduction.

Missing image
Nj_cboug.jpg
Bouguer anomaly map of the state of New Jersey (USGS)

In case the terrain attraction is removed precisely, we speak of a refined Bouguer reduction. In case the terrain is approximated by a flat plate of thickness <math>H<math>, the height of the gravity measurement location above sea level, we speak of a simple Bouguer reduction. The difference between the two, the differential gravitational effect of the unevenness of the terrain, is called the terrain effect. It is always negative.

External link

See also

gravity anomaly, physical geodesy, vertical deflection

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