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| Titel |
Changes of the first Schumann resonance frequency during relativistic solar proton precipitation in the 6 November 1997 event |
| VerfasserIn |
V. C. Roldugin, Ye. P. Maltsev, A. N. Vasiljev, E. V. Vashenyuk |
| 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. 10 ; Nr. 17, no. 10, S.1293-1297 |
| Datensatznummer |
250013824
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| Publikation (Nr.) |
 copernicus.org/angeo-17-1293-1999.pdf |
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| Zusammenfassung |
The variations of the first mode of Schumann
resonance are analyzed using data from Kola peninsula stations during the solar
proton event of 6 November 1997. On this day the intensive flux of energetic
protons on GOES-8 and the 10% increase of the count rate of the neutron monitor
in Apatity between 1220 and 2000 UT were preceded by a solar X-ray burst at 1155
UT. This burst was accompanied by a simultaneous increase of the Schumann
frequency by 3.5%, and the relativistic proton flux increase was accompanied by
1% frequency decrease. These effects are explained by changes of the height and
dielectric permeability of the Earth-ionosphere cavity.
Key words. Ionosphere (ionospheric disturbances; solar
radiation and cosmic ray effects) · Radio science (ionospheric propagation) |
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