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Yes, the Modified Mercalli Intensity (MMI) scale is still used today to measure the intensity of earthquakes based on observed effects on people, buildings, and the environment. It provides a valuable complement to seismic magnitude scales in assessing the impact of earthquakes on society.
The Modified Mercalli Intensity scale is used to measure the intensity of an earthquake based on its observed effects on people, buildings, and the natural environment rather than the seismic energy. It provides a qualitative assessment of the shaking and damage caused by an earthquake at a specific location.
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The maximum measured intensity of the 2010 Canterbury earthquake in New Zealand was IX (9) on the Modified Mercalli scale.
The Rickter (RICK-tur) scale has been popular for decades to measure the intensity of earthquakes, yet it had its issues. These days the Mercalli scale is most often used by geologists and vulcanologists.
Rutlage J Brazee has written: 'Reevaluation of Modified Mercalli Intensity Scale for earthquakes using distance as determinant' -- subject(s): United States, Seismometry, Earthquakes
An intensity of VII on the Modified Mercalli Intensity scale can cause considerable damage to poorly built buildings. This level of intensity typically leads to partial collapse of structures with a likelihood of extensive damage.
The Mercalli intensity scale would be most appropriate for describing historic earthquakes where seismograph records are not available. This scale categorizes earthquakes based on the observed effects on people, buildings, and the environment rather than on instrumental measurements. It provides a qualitative description of the earthquake's intensity and impact.
considerable damage
Other methods of measuring earthquakes include the moment magnitude scale (Mw), the modified Mercalli intensity scale (MMI), and the peak ground acceleration (PGA) method. These methods provide different perspectives on the earthquake's size, intensity, and impact on the ground.