The observer who measured the difference of 8 min 40 s in the arrival times of P and S waves is like 4,800 km away.
We can determine the distance to the earthquake epicenter by using the time difference between the arrival of the P and S waves to estimate the distance from the earthquake to the station.
Hence, the observer who measured the difference of 8 min 40 s in the arrival times of P and S waves is like 4,800 km away.
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