How can the exact distance to an earthquake be determined if you only have a single seismic station to record it?

Question

Quizplus · Accepted Answer

The time difference between P and S waves can be used to determine the distance from the earthquake epicenter using a travel time curve. This is because P waves travel faster and arrive at the seismic station first, while S waves travel slower and arrive later. By measuring the time difference between the two arrivals and using the travel time curve, the distance can be determined. Option A is partially correct, but it only provides an estimation of distance based on a formula, while option B is not reliable for determining distance because the duration of surface waves can vary depending on the magnitude of the earthquake and the distance from the epicenter. Option D is not a practical or viable solution.

How Can the Exact Distance to an Earthquake Be Determined