travel-time curve
travel-time curve One of a set of curves which show the travel times of P-waves and S-waves as functions of distance, expressed either in range kilometres, or in degrees (as epicentral angles). The distance from the recording seismometer to the epicentre can be determined by measuring the times that elapse between the arrival of the P-wave and S-wave, and the S-wave and L-wave.
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travel-time curve