The USGS has developed a program called Did You Feel It? that encourages people to report shaking experiences to better measure the Mercalli intensity of earthquakes.
A scientific department of the American government is the United States Geological Survey, originally known as the Geological Survey. The USGS's scientists conduct research on the country's topography, natural resources, and potential threats from the elements.
An earthquake's shaking strength is measured using a seismic intensity scale called the Modified Mercalli intensity scale, which was developed from Giuseppe Mercalli's Mercalli intensity scale of 1902. The quantity of shaking at a certain site is measured using intensity scales such as the Rossi-Forel scale and the Modified Mercalli Scale. In the region of the epicenter where an earthquake occurs, shaking can range in intensity.
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