Noun: moment magnitude scale
- (geology) a logarithmic scale of 1 to 10 (a successor to the Richter scale) that enables seismologists to compare the energy released by different earthquakes on the basis of the area of the geological fault that ruptured in the quake
"The 2011 Tohoku earthquake in Japan measured 9.0 on the moment magnitude scale"
Type of: graduated table, ordered series, scale, scale of measurement
Encyclopedia: Moment magnitude scale