DAILY PERIODICITY OF WEAK EARTHQUAKES AS A CONSEQUENCE OF NATURAL ELECTROMAGNETIC ELF-RADIATION INFLUENCE ON THE GEOENVIRONMENT

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DAILY PERIODICITY OF WEAK EARTHQUAKES AS A CONSEQUENCE OF NATURAL ELECTROMAGNETIC ELF-RADIATION INFLUENCE ON THE GEOENVIRONMENT

Gavrilov V.A.¹, Zhuravlev V.I.², Morozova Yu.V.¹

Institute of Volcanology and Seismology FEB RAS, Petropavlovsk-Kamchatskii, 683006
Institute of Physics of the Earth RAS, Moscow, 123995

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Mechanisms of daily periodicity of Kamchatka weak (К≤8,0) earthquakes with night maximum were in-
vestigated. It was shown that the speciﬁed eﬀect is characteristic approximately for the 60% of the studied
territory. We concluded that the eﬀect of daily periodicity of weak earthquakes may be caused by the inﬂuence
of ELF-frequency range natural electromagnetic radiation of atmospheric origin on the geoenvironment. The
authors point to the generality of this eﬀect with the earlier revealed eﬀect of modulating inﬂuence of natural
electromagnetic radiation on the intensity of rock geoacoustic emission.