Propagation of ULF Radiation from an Artificial Ionospheric Source in a 3D Inhomogeneous MHD Waveguide

• Published in: Radiophysics and quantum electronics 2021-06, Vol.64 (1), p.1-10
• Main Authors: Kotik, D. S., Ryabov, A. V., Yashnov, V. A., Orlova, E. V.
• Format: Article
• Language: English
• Subjects: Analysis; Astronomy; Astrophysics and Astroparticles; E region; Earth surface; Electric waves; Electromagnetic radiation; Electromagnetic waves; Electromagnetism; Extremely low frequencies; F region; Fluid flow; Hadrons; Heavy Ions; Ionosphere; Ionospheric propagation; Ionospheric research; Lasers; Magnetohydrodynamics; Mathematical and Computational Physics; Nuclear Physics; Observations and Techniques; Optical Devices; Optics; Photonics; Physics; Physics and Astronomy; Propagation; Quantum Optics; Radiation; Ray tracing; Theoretical; Wave propagation; Waveguides
• ISSN: 0033-8443; 1573-9120
• DOI: 10.1007/s11141-021-10107-6

We analyze the propagation of electromagnetic waves of the ultralow-frequency (ULF) range emitted by an artificial ionospheric source arising in the ionospheric F region affected by high-power modulated HF radiation from the HAARP heater (62°23′ N, 143°03′ W). The possibility of the ULF wave propagation over long distances from such a source in the ionospheric inhomogeneous magnetohydrodynamic (MHD) waveguide with the subsequent reaching of the altitudes of the E region and then coming to the Earth’s surface is shown within the framework of the ray tracing approximation. Two groups of rays exiting from the MHD waveguide into the E region were distinguished: one group emerges at a distance of about 400–500 km from the source and the second, at significant distances at the center of the Pacific Ocean, which is consistent with the results of an experiment on long-range detection of artificial ULF signals.