Introduction
What is an Earthquake?
Why and Where?
Seismic Waves
How We Measure Them
Locating Earthquakes
Measuring the Size of an Earthquake
Intensity
The Structure of the Earth
The Biggest and the Deadliest
Earthquakes in the UK
Links to Seismology Information
Printable PDF of Earthquakes Booklet (2.7 MB) |
By looking at the seismograms from different recording stations we can find out the epicentre of the earthquake. The signals arrive first at the closest station and last at the one furthest away. The time difference between the P- and S-waves tells us the distance the earthquake is from the seismograph. By measuring this at three stations we can work out where the epicentre is. |