00:00The Richter scale is one of the first attempts to calculate the intensity of earthquakes.
00:05thanks to the Richter magnitude which measures the seismic energy emitted in the form of seismic waves during the earthquake.
00:11It was gradually replaced in the 1960s by more precise magnitude measurements.
00:16in particular the moment magnitude, denoted MW, but remains used by the general public and the media.
00:22Richter's magnitude is also sometimes called "local magnitude", denoted ML.
