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Mercalli Intensity Scale

The Mercalli Intensity Scale is a semi-quantitative linear scale to measure the intensity of earthquakes by examining the damage rather than measure their magnitude. It was conceived by Italian volcanologist Giuseppe Mercalli in 1902, and was in general use before in 1935 the Richter scale was studied.

It considers the practical effects that a seismic event causes on the infrastructures and houses, as classifiable in 12 possible situations.

Information from The Severity of an earthquake pamphlet of the U.S. Geological Survey.

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