A New Magnitude-Frequency Relation for Earthquakes and a Classification of Relation Types |
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| Authors: | George Purcaru |
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| Affiliation: | NTNF NORSAR, P.O. Box 51, 2007 Kjeller, Norway. and Institute of Geology and Geophysics, Romania. |
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| Abstract: | Summary. In this paper some aspects of the deviations of frequency distributions of earthquakes from a linear trend are considered. For recurrence curves with inflexions, the formula
is proposed as a magnitude-frequency relation, with critical magnitude M cr. Comparison with actual data shows better agreement than other formulae. The slope of the frequency graph is considered in the most general case to be a function of M and some parameters p 1, p 2, …. A classification of the types of magnitude-frequency relation is given and all known types of relations N : M and N: K ( K = log E , E = seismic energy) are summarized. |
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