Yegulalp and Kuo’s (1974) study of the saturation of 1904–1965 earthquake magnitudes by regions was repeated using 1927–1976 data. This experiment failed to demonstrate that magnitude saturates for any individual region at a different value than for the world as a whole, although there is a possibility of lower values for some ocean areas. The effect of saturation of magnitude values frequently occurs more abruptly than is describable by Gumbel’s (1954) type III equation.

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