moment magnitude: Quick Facts

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Facts

Also Known As	M scale • Mw scale • moment magnitude scale • Mw

Photos and Videos

Erciş-Van earthquake of 2011

earthquake magnitude

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How the Richter scale measures earthquakes

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Topics

earthquake seismic moment seismology Richter scale seismograph Today in History—March 29: A Woman Discovers Earth’s Core Scoville scale Beaufort scale seismic survey Fahrenheit temperature scale Rankine temperature scale Celsius grain size scale