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| Titel |
On the nonlinear triggering of VLF emissions by power line harmonic radiation |
| VerfasserIn |
D. Nunn, J. Manninen, T. Turunen, V. Trakhtengerts, N. Erokhin |
| 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 ; 17, no. 1 ; Nr. 17, no. 1, S.79-94 |
| Datensatznummer |
250013646
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| Publikation (Nr.) |
 copernicus.org/angeo-17-79-1999.pdf |
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| Zusammenfassung |
VLF ground data from Porojarvi in N. Finland
has been presented. Spectrograms reveal frequent occurrence of power line
harmonic radiation (PLHR), originating from the Finnish power system and from
heavy industrial plant. The radiation is seen to penetrate the magnetosphere
since numerous occurrences of PLHR triggered emissions are seen. Risers
predominate but fallers and hooks are also observed. A well-established 1D
Vlasov simulation code has been used to simulate these emissions, using
plausible magnetospheric data for a range of L values from L = 4
to L = 5.5. The code is able to reproduce risers fallers and hooks in
close agreement with observations. The results shed considerable insight into
the generation structure of both risers and fallers.
Key words. Electromagnetics (numerical methods) ·
Ionosphere (wave-particle interactions) · Magnetospheric physics (plasma waves
and instabilities) |
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