1. n. [Geophysics]

Steps in seismic processing to compensate for attenuation, spherical divergence and other effects by adjusting the amplitude of the data. The goal is to get the data to a state where the reflection amplitudes relate directly to the change in rock properties giving rise to them.

Alternate Form: TAR

See related terms: amplitude,  attenuation,  gain,  processing,  spherical divergence