";s:4:"text";s:3711:" The Mercalli Intensity Scale measures the intensity of an earthquake by observing its effect on people, the environment and the earth’s surface. The Mercalli intensity scale (or more precisely the Modified Mercalli intensity scale) is a scale to measure the intensity of earthquakes. A base-10 logarithmic scale is obtained by calculating the logarithm of the amplitude of waves recorded by the seismograph. The Mercalli scale measures the intensity of an earthquake. The colors and descriptive names shown here differ from those used on certain shake maps in other articles.
Local planning commissions use the scale to determine regulations that need to be in place so people have homes that are safe during earthquakes.
placoid scale (dermal centicle) A type of scale that comprises the basic unit of the hard skin cover of sharks. Although numerous intensity scales have been developed over the last several hundred years to evaluate the effects of earthquakes, the one currently used in the United States is the Modified Mercalli (MM) Intensity Scale. The Mercalli intensity scale (or more precisely the Modified Mercalli intensity scale) is a scale to measure the intensity of earthquakes.
While shaking is caused by the seismic energyreleased … It was developed in 1931 by the American … The higher numbers of the scale are based on observed damage to struxturesThe large table gives Modified Mercalli scale intensities that are typically observed at locations near the epicenter of the earthquake.The small table is a rough guide to the degrees of the Modified Mercalli Intensity scale. Felt only by a few persons at rest, especially on upper floors of buildings. Modified Mercalli intensity VIII … …in North America is the Mercalli scale, as modified by Harry O. August Heinrich Sieberg copletely rewrote the scale. The Richter Scale measures the energy released by an earthquake using a seismograph. Insurance agents use the scale to determine the cost of earthquake insurance to people living in the area. Very often, non-geologists use this scale, because it is easier for people to describe what damage an earthquake caused, than to do calculations to get a value on the Richter scale.Values range from I - Instrumental to XII - Catastrophic.Giuseppe Mercalli (1850-1914) originally developed the scale, with ten levels. In 1902, Adolfo Cancani extended the scale to include twelve levels. The Modified Mercalli intensity scale (MM or MMI), developed from Giuseppe Mercalli's Mercalli intensity scale of 1902, is a seismic intensity scale used for measuring the intensity of shaking produced by an earthquake. The larger the earthquake the higher the numbers used to show intensities on a map. The wings of some insects, notably the Lepidoptera (butterflies… Skip to main content