Ionospheric Wind Influence to the Formation of VLF/LF Anomalies Related to the Earthquake Preparing

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Abstract

Ionospheric wind influence to the internal gravitational waves is considered. It is shown that interaction of wind in the ionosphere with geomagnetic field leads to the Ampere force occurrence which vertical gradient modifies properties of the internal gravitational waves. Such interaction results in the discrete spectrum of ionosphere fluctuations with the main period about 30 min. The increase in Ampere force due to electric field of seismic origin leads to the appearance of maximum with shorter periods about 10 and 22 min in the spectrum of ionosphere fluctuations. Observations of phase and amplitude fluctuation of the radio wave reflected from the ionosphere during growth of seismic activity are confirmed with the results of considered model.

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About the authors

V. M. Sorokin

Pushkov Institute of Terrestrial Magnetism, Ionosphere, and Radio Wave Propagation RAS (IZMIRAN)

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Email: sova@izmiran.ru
Russian Federation, Troitsk, Moscow

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Supplementary files

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2. Fig. 1. Scheme of ionosphere perturbation registration.

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3. Fig. 2. Coordinate system used in the calculations.

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4. Fig. 3. Dependences of period values in minutes on spectral line numbers.

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