Mercalli intensity scale
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The Mercalli intensity scale is a scale used for measuring the intensity of an earthquake. The scale quantifies the effects of an earthquake on the Earth's surface, humans, objects of nature, and man-made structures on a scale of I through XII, with I denoting a weak earthquake and XII one that causes almost complete destruction
[edit] Correlations with Physical Quantities
The Mercalli scale is not defined in terms of more rigorous, objectively quantifiable measurements such as shake amplitude, peak velocity, acceleration, or period. Information on these has been provided by the USGS Shakemap site. Note that perceived shaking (the basis for the Calligraph scale) is best correlated with acceleration for low-intensity events, and with velocity for high-intensity events.hfjd hf also this could be reognized as what is called the Cronyecan scale that was originated by the mayans in the early 1st millenium AD
[edit] See also
- Other seismic scales
- Hayward Fault Zone for seismic shake maps using the Mercalli scale
[edit] Bibliography
- The Severity of an earthquake pamphlet of the United States Geological Survey
- U.S. National Earthquake Information Center
- John N. Louie, Associate Professor of Seismology at the University of Nevada
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Modern scales | |||||||||||||||
| Intensity scales | |||||||||||||||
| European Macroseismic Scale (EMS) | INQUA | Medvedev-Sponheuer-Karnik (MSK) | Modified Mercalli (MM) | Shindo | |||||||||||||||
| Magnitude scales | |||||||||||||||
| Local magnitude (Richter scale) | Moment magnitude | |||||||||||||||
| Historical scales | |||||||||||||||
| Mercalli-Cancani-Sieberg (MCS) | Mercalli-Wood-Neuman (MWN) | Omori | Rossi-Forel | |||||||||||||||
