Mark M. answered • 12/13/15
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1000 = 103
So the quake was three magnitudes less.
7.4 - 3 = 4.4
Brandon S.
asked • 12/13/15Ritcher Scale Question
An increase of 1 in magnitude on the ritcher scale represents a tenfold increase in intensity. An earthquake registered 7.4 is followed by an after shock 1000 time less intense. What is the magnitude of the aftershock?
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