Reference Terms
from Wikipedia, the free encyclopedia

Moment magnitude scale

The moment magnitude scale was introduced in 1979 by Tom Hanks and Hiroo Kanamori as a successor to the Richter scale and is used by seismologists to compare the energy released by earthquakes.

Note:   The above text is excerpted from the Wikipedia article "Moment magnitude scale", which has been released under the GNU Free Documentation License.
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October 6, 2015

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