What is the relationship between the Richter Scale and MSK?
Mercalli-Cancani-Sieberg scale. Experts use the updated version of the Mercalli scale, the MSK ’64, which was worked out in 1964. The strength of earthquakes Mercalli/Richter/Intensity I 0,4 Unnoticeable II 1,5 Inconspicuous III 2,5 Some people notice it IV 3,5 Most people notice it V 4,4 Awakes VI 5,2 Frightening a few losses VII 6,0 Damage to smaller buildings VIII 6,7 Several houses collapse IX 7,4 General building damages X 8,0 Generally houses collapse XI 8,5 catastrophe XII 8,9 The landscape changes Source: [Big world atlas] The intensity is the measure of the earthquake’s effect on people While the Mercalli type grade and the preceding scales are all classified by environmental damages and losses caused by the earthquakes, until the Richter scale brought a completely different approach. In 1935, C. Richter American seismologist introduced the notion of extent and the magnitude, which are based on instrumental recordings, and he created his own scale on the basis of the earthquak