# What can the time lag between the first arrival of the P-wave and first arrival of the S-wave be used to determine?

Difference in arrival times between P and S waves can be used to determine the distance between the station and an earthquake.

- Since different waves travel at different speeds, they arrive at seismic stations at different times.\/li>
- The difference in arrival times between P and S waves can be used to calculate the distance between an earthquake and a station.\/li> \li>By calculating the distance between three stations and the earthquake, we can draw a circle around each station with a radius equal to the earthquake's distance from it. The earthquake happened at the intersection of all three circles.

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The time lag between the first arrival of the P-wave and the first arrival of the S-wave can be used to determine the distance to the earthquake epicenter.

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