Generation of ULF geomagnetic pulsations during early stage of earthquake preparation

Details Generation of ULF geomagnetic pulsations during early stage of earthquake preparation Generation of ULF geomagnetic pulsations during early stage of earthquake preparation

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jastp..72..763s&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 72, Issue 9-10, p. 763-766.

Physics

Ulf Geomagnetic Pulsations, Earthquake Preparation, Variation Of The Conductivity, Telluric Currents

Scientific paper

A new mechanism of generation of ULF geomagnetic pulsations near the Earth's surface near the future earthquake epicenter is proposed. The mechanism is connected with the migration of fluid and gases during the active phase of the earthquake preparation. The motion of fluid and gases is accompanied by the formation of cracks and fast filling of them by fluid and gases. The variation of electrical conductivity in the layer induces the impulsive electric current. The magnetic field due to this current can be registered on the Earth's surface. The corresponding equations for magnetic field perturbations caused by non-stationary conductivity are derived. The amplitude and temporal characteristics of the magnetic impulses are estimated.

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