The time taken for a wave to travel from a source generator (e.g. a shot or transmitter), through some media, to a detector (geophone or receiver), at a known offset. It is used to compute travel-time curves in seismic-refraction surveying and seismic sections in seismic-refraction surveying. See also one-way travel time; and two-way travel time. Compare transit time.
Subjects: Earth Sciences and Geography.