1. n. [Geophysics]

The difference in the arrival times or traveltimes of a reflected wave measured by receivers at two different offset locations. Normal moveout (NMO) is moveout caused by the separation between a source and a receiver in the case of a flat reflector. Dip moveout (DMO) occurs as an effect in addition to NMO when reflectors dip. Problems that require static corrections can also produce moveout.

See: arrival,  common depth point,  dip moveout,  normal moveout,  offset,  receiver,  reflector,  source,  static correction

2. n. [Geophysics]

The procedure in seismic processing that compensates for the effects of the separation between seismic sources and receivers.

See: processing,  receiver,  source