they used the focus
Scientists use seismic waves to find an earthquake epicenter. By analyzing the arrival times of primary (P) and secondary (S) seismic waves at different seismic stations, scientists can triangulate the epicenter of the earthquake.
Scientists need information from at least three cities to determine the epicenter of an earthquake because each city provides a distance measurement to the epicenter. By triangulating these distances, scientists can pinpoint the intersection point, which represents the epicenter of the earthquake. Having data from three cities helps to confirm the location of the epicenter more accurately.
seismic waves
epicenter and seiesmic waves, find the distance and seismograph stations
the distance from a epicenter to an earthquake :)
The distance of an earthquake epicenter from a seismic station. Using the Three point method, the distance from 3 seismic stations are used to locate the epicenter by triangulation.
The distance of an earthquake epicenter from a seismic station. Using the Three point method, the distance from 3 seismic stations are used to locate the epicenter by triangulation.
A travel time graph can be used to find the distance from the epicenter of an earthquake.
Ground motion, earthquakes and nuclear explosions for example.
The difference in arrival times of P-waves and S-waves can be used to find an earthquake's epicenter. P-waves travel faster than S-waves, so by measuring the time lag between the arrival of the two wave types at different seismic stations, scientists can triangulate the epicenter of the earthquake.
S-waves and P-waves emit from the focus (epicenter) at the same time, yet one of them is faster than the other. therefore the S waves and P waves are directly proportional to each other. So all one needs is to do the math and trace the distance between the waves and there, you have found the Focus (epicenter) of the earthquake.
how do seismologist know how to find the location of a epicenter