年間 12 号発行
ISSN 印刷: 0040-2508
ISSN オンライン: 1943-6009
Indexed in
SHIFT OF ANTIPODE MAXIMUM OF ELECTRIC FIELD IN THE EARTH − IONOSPHERE CAVITY BY THE DAY − NIGHT NON-UNIFORMITY
要約
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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Nickolaenko A., Galuk Y., Hayakawa M., SHIFT OF ANTIPODE MAXIMUM OF ELECTRIC FIELD IN THE RESONATOR THE EARTH–IONOSPHERE CAVITY CAUSED BY DAY–NIGHT NON-UNIFORMITY, RADIOFIZIKA I ELEKTRONIKA, 24, 1, 2019. Crossref
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Nickolaenko A.P., Galuk Yu P., Hayakawa M., Kudintseva I.G., Model source bearings of Q-bursts for observations in Antarctica, Journal of Atmospheric and Solar-Terrestrial Physics, 222, 2021. Crossref
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Shvets Alexander V., Nickolaenko Alexander P., Koloskov Alexander V., Yampolsky Yuri M., Budanov Oleg V., Shvets Alisa A., Day after day variations of arrival angles and polarisation parameters of Q bursts recorded at Antarctic station “Akademik Vernadsky”, Journal of Atmospheric and Solar-Terrestrial Physics, 229, 2022. Crossref