title: Vertical profile of atmospheric conductivity that matches Schumann resonance observations.
abstract: We introduce the vertical profile of atmospheric conductivity in the range from 2 to 98 km. The propagation constant of extremely low frequency (ELF) radio waves was computed for this profile by using the full wave solution. A high correspondence is demonstrated of the data thus obtained to the conventional standard heuristic model of ELF propagation constant derived from the Schumann resonance records performed all over the world. We also suggest the conductivity profiles for the ambient day and ambient night conditions. The full wave solution technique was applied for obtaining the corresponding frequency dependence of propagation constant relevant to these profiles. By using these propagation constants, we computed the power spectra of Schumann resonance in the vertical electric field component for the uniform global distribution of thunderstorms and demonstrate their close similarity in all the models. We also demonstrate a strong correspondence between the wave attenuation rate obtained for these conductivity profiles and the measured ones by using the ELF radio transmissions.
authors.affiliation: A.Ya. Usikov Institute for Radio-Physics and Electronics of National Academy of Sciences of the Ukraine, 12 Acad. Proskura Street, Kharkiv, 61085 Ukraine.
authors.forename: Alexander P
authors.initials: AP
authors.lastname: Nickolaenko
authors.affiliation: Saint-Petersburg State University, 35 University Ave., Saint-Petersburg, Peterhof, Russia 198504.
authors.forename: Yuri P
authors.initials: YP
authors.lastname: Galuk
authors.affiliation: Hayakawa Institute of Seismo Electromagnetics Co. Ltd., The University of Electro-Communications (UEC) Incubation Center-508, 1-5-1 Chofugaoka, Chofu, Tokyo, 182-8585 Japan ; Advanced Wireless Communications Research Center (AWCC), UEC, 1-5-1 Chofugaoka, Chofu, Tokyo, 182-8585 Japan.
authors.forename: Masashi
authors.initials: M
authors.lastname: Hayakawa
keywords: Attenuation factor; ELF radio wave propagation constant; Man-made ELF radio waves; Schumann resonance power spectra; Vertical conductivity profile of atmosphere