The difference in travel time of p waves and s waves is four minutes, how far from the epicenter is the seismograph station recorded it?

With increasing distance from the earthquake, the time difference between the arrival of the P waves and the arrival of the S waves increases. Put more simply, the higher the time between the S and P waves (the S-P interval), the farther the distance. Describe the process of triangulation to locate an epicenter.

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