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Related to Mercalli scale: Moment magnitude scale
Mercalli scale:see Richter scaleRichter scale
, measure of the magnitude of seismic waves from an earthquake. Devised in 1935 by the American seismologist Charles F. Richter (1900–1985) and technically known as the local magnitude scale, it has been superseded by the moment magnitude scale, which was
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Mercalli scale[mer′käl·ē ‚skāl]
A 12-point scale for classifying the magnitude of an earthquake.