The logarithmic earthquake magnitude scale used relatively high-frequency data from nearby seismograph stations, according to the USGS, but as more stations were installed around the world ...

Instead, they created a logarithmic scale. Each number on the Richter Scale represents an earthquake ten times more powerful than the number preceding it.

Today, earthquake magnitude is measured using another logarithmic system—usually called Moment Magnitude or just Magnitude—that's calibrated to the Richter Scale but can measure bigger quakes ...

The Richter scale, developed by the American geologist Charles Richter in the 1930s, is a "logarithmic" scale, which means that each one-point increase on the scale represents a tenfold increase ...

The logarithmic earthquake magnitude scale used relatively high-frequency data from nearby seismograph stations, according to the USGS, but as more stations were installed around the world ...