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Bouguer anomaly

1. n. [Geophysics]

The remaining value of gravitational attraction after accounting for the theoretical gravitational attraction at the point of measurement, latitude, elevation, the Bouguer correction, and the free-air correction (which compensates for height above sea level assuming there is only air between the measurement station and sea level). This anomaly is named for Pierre Bouguer, a French mathematician (1698–1758) who demonstrated that gravitational attraction decreases with altitude.

See: gravitygravity survey

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