1. n. [Formation Evaluation]

The positive gravity correction that accounts for the deviation of the topography from the horizontal slab of infinite extent assumed in the Bouguer correction. Local topographic features always decrease the gravity measurement because the attractive force of the topography above the station is away from the Earth, and the effect of topography below the station is negative because of the absence of attractive material.

See: borehole gravity,  borehole gravity meter,  Bouguer correction,  elevation correction