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jueves, 4 de agosto de 2011

Richter's scale

refers to a number of ways to assign a single number to quantify the energy contained in an earthquake..



 magnitude is a base-10 logarithmic scale obtained by calculating the logarithm of the amplitude of waves measured by a seismograph. An earthquake that measures 5.0 on the Richter scale has a shaking amplitude 10 times larger than one that measures 4.0.

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