On the possibility of experiments on the excitation of artificial ultra-low and extra-low frequency emissions in the ionosphere by the FENICS installation on the Kola peninsula

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Abstract

A numerical model has been developed to calculate the electromagnetic response in the ionosphere from grounded ultra-low-frequency transmitters of finite length L. Such megatransmitters are the ZEVS installation with a carrier frequency of 82 Hz and the FENICS installation, which can generate artificial emissions at frequencies from fractions of a Hz to a few hundreds of Hz. The amplitude of radiation excited in the upper ionosphere by a grounded horizontal current suspended above a high-resistance earth’s surface has been calculated. The altitude profile of the plasma parameters was reconstructed using the IRI ionospheric model. For the ZEVS transmitter (L = 60 km) powered by a current of 200 A, the simulated amplitudes of the electromagnetic response in the nighttime ionosphere can reach ~60 μV/m, which was confirmed by observations on the DEMETER satellite. According to calculations, the FENICS facility (L = 100 km), powered by a current of 100 A, can generate radiation in the nighttime upper ionosphere with a frequency of 10—100 Hz and an amplitude of up to ~60—70 μV/m. The FENICS facility can be used to excite artificial Pc1 pulsations that could be detected on low-Earth-orbit satellites (e.g., CSES). To create pulsations in the nighttime ionosphere at a frequency of 0.5 Hz with the amplitudes of the magnetic component >1 pT and the electric component >10 μV/m, the current in the FENICS antenna is to be >100 A.

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About the authors

V. A. Pilipenko

Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences; Institute of Space Research of the Russian Academy of Sciences

Author for correspondence.
Email: space.soliton@gmail.com
Russian Federation, Moscow; Moscow

N. G. Mazur

Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences

Email: space.soliton@gmail.com
Russian Federation, Moscow

E. N. Fedorov

Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences

Email: space.soliton@gmail.com
Russian Federation, Moscow

A. N. Shevtsov

Institute of Geology of the Kola Scientific Center of the Russian Academy of Sciences

Email: space.soliton@gmail.com
Russian Federation, Apatity

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Supplementary files

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2. Fig. 1. Illustration of the transition from a real source with a current suspended above ground and grounded at the ends to a model source with a buried current. Quasidipole current lines are shown for depths less than δg

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3. Fig. 2. Spatial structure in the direction across the current source of the amplitude of the electrical component |Ex(y)| of the FENICS system radiation at frequencies from 3 to 50 Hz at an altitude of 500 km. The conductivity of the Earth is σg = 10-5 cm/m. All curves correspond to the emitter scale L = 100 km. Also, the dashed line shows the amplitude of the electric field at 82 Hz excited by the ZEVS transmitter (L = 60 km)

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4. Fig. 3. Spatial structure of the amplitude amplitude of the electrical components |Ex(y)|, |Ey(y)| of the FENICS system radiation in the direction across the current line at an altitude of 500 km. Earth conductivity σg = 10-5 cm/m, length L = 100 km, frequency - 0.5 Hz

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5. Fig. 4. Spatial structure of the amplitude of the magnetic components |Bx(y)|, |By(y)|, |Bz(y)| of the FENICS system radiation in the direction across the current line at an altitude of 500 km. Earth conductivity σg = 10-5 cm/m, length L = 100 km, frequency - 0.5 Hz

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