In fact, the Richter scale was replaced in the ... of earthquakes occurring in southern California. The logarithmic earthquake magnitude scale used relatively high-frequency data from nearby ...

Magnitudes are based on a logarithmic scale (base 10). What this means is that for each whole number you go up on the magnitude scale, the amplitude of the ground motion recorded by a seismograph goes ...

How earthquake intensity changes with magnitude The intensity of an earthquake is measured on the logarithmic Richter scale, where each whole-number increase represents a tenfold increase in the ...