1. . 
Alteration of seismic data to suppress noise, enhance signal and migrate seismic events to the appropriate location in space. Processing steps typically include analysis of velocities and frequencies, static corrections, deconvolution, normal moveout, dip moveout, stacking, and migration, which can be performed before or after stacking. Seismic processing facilitates better interpretation because subsurface structures and reflection geometries are more apparent.
See: amplitude variation with offset, automatic gain control, common midpoint method, depth migration, dip moveout, filter, migration, normal moveout, quicklook, slant stack, stack, static correction, time migration, wavelet extraction