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Magnitude-frequency distribution in the European-Mediterranean earthquake regions

Magnitude-frequency distribution in the European-Mediterranean earthquake regions

Tectonophysics 220(1-4): 0-323

The European-Mediterranean earthquake catalogue from 1901 to 1985, which comprises uniformly determined magnitudes MS and mB(h 60 km) of 13300 events, was used in the study of cumulative magnitude-frequency relationships Nc(M) compiled for 75 earthquake regions and 25 larger provinces. In the whole magnitude range observed, the Gutenberg-Richter formula log Nc(M) = a bM very rarely fits the cumulative (logNc, M) distributions. The b-values of log-linear segments of Nc(M) vary regionally from b = 0.7 to b = 1.3; averaging of all values leads to b = 0.92 (shallow events, MS and b = 0.56 (h 60 km, mB).

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Accession: 019361617

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DOI: 10.1016/0040-1951(93)90238-f

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