GEOPHYSICAL RESEARCH, 2017, vol. 18, no. 2, pp. 65-76. DOI: 10.21455/gr2017.2-4

UDC 550:3; 550:4

Abstract  References  Full text (in Russian)

SEISMIC BACKGROUND DISTURBANCE DUE TO GEOMAGNETIC IMPULSES

S.A. Riabova, A.A. Spivak

Institute of Geosphere Dynamics of Russian Academy of Science, Moscow, Russia

Abstract. The results of analysis of synchronous instrumental observations of the variations in the geomagnetic field on the Earth's surface and the seismic background, carried out at the Geophysical Observatory “Mikhnevo” of the Institute of Geosphere Dynamics, Russian Academy of Science, in 2008–2015 are presented. It is shown that the geomagnetic impulses (SI-signals) and sudden commencement of magnetic storms (SSC-signals) can cause increased background seismic oscillations in the frequency range of 0.01–0.1 Hz. The relationship between the amplitude of the impulse-type geomagnetic variations and amplitude of the caused variations of background seismic oscillations has established.

Keywords: geomagnetic variations, impulses, seismic oscillations, fault zone, energy transformation.

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