Changes of the first Schumann resonance frequency during relativistic solar proton precipitation in the 6 November 1997 event

Details Changes of the first Schumann resonance frequency during relativistic solar proton precipitation in the 6 November 1997 event Changes of the first Schumann resonance frequency during relativistic solar proton precipitation in the 6 November 1997 event

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999angeo..17.1293r&link_type=abstract

Annales Geophysicae, vol. 17, Issue 10, pp.1293-1297

Physics

7

Scientific paper

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.

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