Measuring Earthquake Magnitude
- Richter Scale -
- The Richter magnitudes are based on a logarithmic scale
(base 10). What this means is that for each whole number you go up on the
Richter scale, the amplitude of the ground motion recorded by a seismograph
goes up ten times.
- Using this scale, a magnitude 5 earthquake would result
in ten times the level of ground shaking as a magnitude 4 earthquake
(and 32 times as much energy would be released)
- Earthquakes: TNT
vs. Earthquake Example
- Seismologists use a separate method
to estimate the effects of an earthquake, called its intensity.