Electromagnetic Field Response to Impulsive Processes in the Earthquakes

  • B. V.Dovbnya Borok Geophysical Observatory, IFZ RAS, Yaroslavl Region, Borok, Russia
Keywords: Earthquake, Electromagnetic signals, Geomagnetic pulsations


Looking for electromagnetic effects of earthquakes, pulse signals are detected preceding the moment of the event or following it. The advance or delay is from 0 s to 200 s. The signals are observed as single or pair pulses in the frequency range 0-5 Hz. Dynamical spectra of the signals are presented and their characteristics are discussed. The signals impact actively on the magnetosphere and ionosphere. As a result of such impact a sharp change in the regime of geomagnetic pulsation excitation may occur. The detected response of the pulsations is considered and analyzed.


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