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Abstract

Summary

The purpose of this work is to determine the response of the microseismic background to pulsed geomagnetic variations for the conditions of the mid-latitude Mikhnevo Geophysical Observatory of Institute of Geosphere Dynamics of Russian Academy of Sciences. During pulsed variations of the magnetic field of SSC and SI types, in most cases, increased variations of the seismic background are found. Spectral analysis shows that the induced variations in the seismic background are mainly observed in the frequency range of 0.01 – 0.1 Hz (in some cases, 0.001 – 0.1 Hz). The statistically significant correlation between amplitudes of induced microseismic background and geomagnetic pulses is indicated by high correlation coefficients calculated by different methods and by surrogate data analysis. The quantitative relationship between the studied variables was obtained. The application of methods of statistical data processing made it possible to establish that it is the geomagnetic field variations that entail a change in the microseismic background and with some delay.

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/content/papers/10.3997/2214-4609.201902007
2019-06-03
2024-04-26
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