1. n. [Geophysics]

Disturbances in seismic data that are not coherent (they lack a phase relationship between adjacent traces, unlike air waves and ground roll) and cannot be correlated to the seismic energy source. Random noise can be reduced or removed from data by stacking traces, filtering during processing or using arrays of geophones during acquisition.

See: air wave,  coherent,  coherent noise,  filter,  geophone,  ground roll,  noise,  processing,  stack,  trace