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What happened to the Richter Scale? #earthquake iris.edu/hq/inclass/ani… (Thread)
The Richter Scale is mostly effective for regional earthquakes no greater than M5 whereas the Moment Magnitude is more effective for large earthquakes.
Moment Magnitude uses more variables to calculate the energy released using seismic moment. Seismic moment combines the seismic energy with offset on the fault and rigidity of rock. Learn more here
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