Using of the macroseismic intensity scale has been a routine action due to the lack of earthquake recording devices from the past. It was also relevant because it could be measured by people without using a specific device. Of course, other reasons can be mentioned for the necessity of using the macroseismic intensity scale including estimation of the magnitude of historical earthquakes, studies on the strong motion estimation, vulnerability assessment, seismic hazard analysis, and the production of ShakeMaps, which is accomplished of estimating the earthquake intensity in a few minutes after the earthquake.
Data set includes 782 item recorded in 39 earthquakes in the time period from 1977 to 2012, with a range of magnitude among 5 to 7.3 (Mw) with MMI >= 9.
In this study, by fitting the data for the intensity of observation on the Modified Mercalli scale and PGA, PGV, The relation of MMI and acceleration were estimated and represented.