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1. n. [Geophysics]

An event or appearance of seismic data as a reflection, refraction, diffraction, or other similar feature, or the time at which seismic data appear. An event in a seismic section can represent a geologic interface.

Synonyms: event

See: arrival timediffractiondip moveoutfirst breakFresnel zonehodogramlagmoveoutray tracingreflectionrefractionseismic sectionspectrumtime slice