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Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN Imprimir: 0040-2508
ISSN En Línea: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v76.i15.30
pages 1339-1358

SHIFT OF ANTIPODE MAXIMUM OF ELECTRIC FIELD IN THE EARTH − IONOSPHERE CAVITY BY THE DAY − NIGHT NON-UNIFORMITY

Yu. P. Galuk
St. Petersburg State University, 35 University Ave., St. Petersburg, Peterhoff, 198504 Russia
A. P. Nickolaenko
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
Masashi Hayakawa
Hayakawa Institute of Seismo Electromagnetics Co. Ltd.(Hi-SEM), The University of Electro-Communications (UEC) Alliance Center #521, Advanced & Wireless and Communications Research Center, UEC, Chofu, Tokyo, 182-8585, Japan

SINOPSIS

Accounting for the actual structure of the lower ionosphere in the global electromagnetic (Schumann) resonance problem is an important and urgent task. The paper analyzes an impact of deviations in the vertical profile of atmosphere conductivity at the night and the day hemispheres on the spatial distribution of electromagnetic field in the Schumann resonance band. The cavity characteristics depend on the atmosphere conductivity profiles, and these are accounted for by using the full wave solution at the day and the night sides of the globe. The electromagnetic problem in a non-uniform cavity is solved with the help of 2D telegraph equation. The displacement of the amplitude maximum of the electric field component from the source geometric antipode is demonstrated at several frequencies for different locations of the field source, and the models are used of the sharp and the smooth day–night transition. We demonstrate that the day-night non-uniformity shifts the antipodal maximum of the vertical electric field amplitude from the source geometric antipode toward the center of the day hemisphere by a distance reaching 300 km.


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