SUMMER 2003GEOHAZARDS COURSE AT UWI, MONA - page 051

Prepared and compiled by Rafi Ahmad, Unit for Disaster Studies,
Department of Geography and Geology,
University of the West Indies, Mona, Kingston 7, Jamaica

Table 2
COMPARISON OF RICHTER MAGNITUDE AND MODIFIED MERCALLI INTENSITY

Richter
Magnitude 		Expected Modified
Mercalli Maximum
Intensity
(at epicentre) 		remarks
2 I – II Usually detected only
by instruments
3 III Felt indoors
4 IV – V Felt by most people;
slight damage
5 VI-VII Felt by all;
many frightened and run outdoors;
damage minor to moderate
6 VII-VIII Every body runs outdoors;
damage moderate to major
7 IX –X Major damage
8+ X – XII Total and Major damage
After Charles F. Richter, 1958, Elementary Seismology.

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