What is Intensity scale used in relation with Earthquakes?
The intensity scale used in relation with earthquakes consist of the descriptions of a series of certain key responses such as people awakening, movement of furniture, damage to chimney, and finally – total destruction. Although numerous intensity scales have been developed over the last several hundred years to evaluate to evaluate the effects of earthquakes, the one most commonly used is Modified Mercalli (MM) Intensity scale. It was developed by the American seismologists Harry Wood and Franke Neumann. This scale consisting of 12 increasing levels of intensity that range from imperceptible shaking to catastrophic destruction, is designated by Roman numerals (I- XII). It does not have a mathematical basis, instead it is subjective ranking based on observed effects. The lower numbers of intensity scale generally deal with the manner in which the earthquake is felt by people. The higher numbers of the scales are based on observed structural damage. Normally, damages are associated with
