GEOPHYSICAL RESEARCH, 2016, vol.17, no.2, pp.66-76. DOI: 10.21455/gr2016.2-5

UDC 550.344.385 550.385.37

Abstract  References  Full text (in Russian)

THE INFLUENCE OF STRONG EARTHQUAKES ON THE Pc1 GENERATION REGIME

O.D. Zotov

Borok Geophysical Observatory of Schmidt Institute of Physics of the Earth of the Russian Academy of Science, Borok (Yaroslavl region), Russia

Abstract. Pc1 geomagnetic pulsations (electromagnetic waves in the range of 0.2–5 Hz) are experimentally studied in connection with strong earthquakes. This is a part of the lithosphere-magnetosphere relations problem. The long series of observations from the catalogs of Pc1 and earthquakes were used in the study. It is shown that after strong earthquakes, the regime of Pc1 generation changes. It is displayed as a quasi-periodic (with a period close to an hour) modulation of the oscillation activity. The same effect is observed after nuclear explosions. The similar responses of magnetosphere to strong earthquakes and nuclear explosions suppose the uniform nature of these effects.

Keywords: magnetosphere, lithosphere, earthquake, geomagnetism.

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