Unimodal part of the magnitude-frequency distribution of earthquakes according to the USGS catalog

2019/11/29 by Guglielmi, A. V.
#FOS: Physical sciences #Geophysics (physics.geo-ph)

paper · doi:10.48550/arxiv.1912.00073

Abstract

In this paper, we used the Global Catalog of the National Earthquake Information Center US Geological Survey (NEIC USGS) for analysis of the magnitude-frequency distribution of earthquakes. We selected the unimodal part of the distribution and proposed an empirical formula that approximates this part in a wide range of magnitudes. The formula may be useful in studying the problems seismology, in which the expected effect is manifested in relatively weak earthquakes. The paper will be sent to the journal Geodynamics and Tectonophysics (ISSN 2078-502X). Keywords: planetary seismicity, Gutenberg-Richter law, unimodal distribution, statistical sum, entropy, spheroidal oscillations

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