intensity
The intensity of an earthquake is a measure of its effect, i.e., degree of damage; for example, broken windows, collapsed houses, and so on, produced by an earthquake at a particular.
The effect of the earthquake may cause collapsed houses at city A, broken windows at city B, and no damage at city C.
Intensity observations are, therefore, subject to personal estimates, and are distance dependent.
Intensity varies from place to place for the same earthquake.
The Modified Mercalli (MM) scale (1956 version) has been popularly used to prepare an intensity map, called an isoseismal map (area with similar intensity) (see Kayal 2008).
The MM scale has now been thoroughly revised, and new scale, called the Medvedev-sponheuer-karnik (MSK) scale, has been adopted since 1992