The ionospheric electric field perturbation with an increase in radon emanation

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Resumo

Due to the increase in radon emanation, the conductivity in the surface layer of air increases, which causes variations in the electric fields in the low atmosphere and according to some hypotheses in the ionosphere. There are known proposals on the possibility of using such ionospheric disturbances as precursors of earthquakes. We simulate the ionospheric electric fields in the framework of a quasi-stationary model of the conductor consisting of the atmosphere including the ionosphere. The consequences of the paradoxical point of view about a decrease in the conductivity of surface air with an increase in radon content are also considered. Even with extreme radon emanation, disturbances of the ionospheric electric field are obtained three to four orders of magnitude smaller than the supposed precursors of earthquakes.

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Sobre autores

V. Denisenko

Institute of Computational Modelling SB RAS

Autor responsável pela correspondência
Email: denisen@icm.krasn.ru
Rússia, Krasnoyarsk

E. Rozanov

Sankt-Petersburg State University

Email: denisen@icm.krasn.ru
Rússia, St Petersburg

K. Belyuchenko

West Department of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation RAS

Email: denisen@icm.krasn.ru
Rússia, Kaliningrad

F. Bessarab

West Department of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation RAS

Email: denisen@icm.krasn.ru
Rússia, Kaliningrad

K. Golubenko

Oulu University

Email: denisen@icm.krasn.ru
Finlândia, Oulu

M. Klimenko

West Department of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation RAS

Email: denisen@icm.krasn.ru
Rússia, Kaliningrad

Bibliografia

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2. Fig. 1. Disturbances of the current density flowing from the atmosphere into the ionosphere, δjz(r), (thin curve) and the radial component of the ionospheric electric field δEr(r) (thick curve) with an increase in conductivity in the radon-occupied ground layer of air.

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3. Fig. 2. Solution of the problem of electrical conductivity with conductivity reduced to zero in the surface air layer in a circle with a radius of 100 km. Equipotentials are curves of average thickness with the potential values ​​indicated on them. Current lines with an interval between them of 7 km × 2 pA/m² are thick curves with arrows indicating the direction of the current, and additionally constructed with an interval ten times smaller are thin curves.

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4. Fig. 3. Disturbances of the current density flowing from the atmosphere into the ionosphere, δjz(r) (thin curve) and the radial component of the ionospheric electric field δEr(r) (thick curve) with a decrease in conductivity in the surface air layer.

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5. Fig. 4. Difference in the solution of the electrical conductivity problem for potential V with conductivity reduced to zero in the surface air layer in a circle with a radius of 10 km from the potential in the region of the unperturbed GEC. Equipotentials are thin curves with the potential values ​​indicated on them, the step is 0.25 of the logarithm of the potential value. Cross-sections of current tubes with an interval equal to π · 10⁻⁵ A are thick curves with arrows indicating the direction of the current.

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