1. n. [Geophysics]

A source of seismic energy used in acquisition of marine seismic data. This gun releases highly compressed air into water. Air guns are also used in water-filled pits on land as an energy source during acquisition of vertical seismic profiles.

See related terms: acquisition,  bubble effect,  cavitation,  impulsive seismic data,  source,  vertical seismic profile,  water gun