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| Titel |
Characteristics of VLF atmospherics near the resonance frequency of the Earth-ionosphere waveguide 1.6-2.3 kHz by observations in the auroral region |
| VerfasserIn |
A. A. Ostapenko, E. E. Titova, A. P. Nickolaenko, T. Turunen, J. Manninen, T. Raita |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 28, no. 1 ; Nr. 28, no. 1 (2010-01-20), S.193-202 |
| Datensatznummer |
250016754
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| Publikation (Nr.) |
 copernicus.org/angeo-28-193-2010.pdf |
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| Zusammenfassung |
| Recordings of ELF-VLF waves with the right-hand (RH) and the
left-hand (LH) circular polarization were made in Northern Finland.
Analysis showed a difference between the RH and LH polarized waves.
A pronounced maximum of the wave amplitude was observed at the first
critical frequency of the Earth-ionosphere waveguide (the first
transverse resonance) around 1.6–2.3 kHz. The wave had the
circular LH polarization at this maximum. To interpret observations,
we computed the characteristics of the waveguide modes by using the
full wave solution in the night model of the ionosphere.
Computations show that the spectral maximum at the first transverse
resonance frequency arises from a small absorption of the LH
polarized radio wave in the magnetized ionosphere plasma, forming
the upper boundary of the Earth-ionosphere waveguide. |
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