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AGU: Journal of Geophysical Research, Space Physics

 

Index Terms

  • Radio Science: Ionospheric propagation
  • Ionosphere: Solar radiation and cosmic ray effects
  • Ionosphere: Wave propagation
  • Solar Physics, Astrophysics, and Astronomy: X rays, gamma rays, and neutrinos
Abstract
Cited By (13)
 

Abstract

Changes of Schumann resonance parameters during the solar proton event of 14 July 2000

V. C. Roldugin

Polar Geophysical Institute, Apatity, Russia

Y. P. Maltsev

Polar Geophysical Institute, Apatity, Russia

A. N. Vasiljev

Polar Geophysical Institute, Apatity, Russia

A. V. Shvets

Institute of Radio Physics and Electronics, Kharkov, Ukraine

A. P. Nikolaenko

Institute of Radio Physics and Electronics, Kharkov, Ukraine

The ELF measurements in Russian observatories Lovozero (the Kola Peninsula) and Lekhta (Karelija) during the solar proton event of 14 July 2000 show the decrease of frequencies of the first and second Schumann resonance modes of ∼0.4 Hz and the increase of the first-mode bandwidth from 0.8 to 1.5 Hz. The solar X-ray burst, preceding the proton precipitation, is accompanied by the increase of the first-mode frequency. Approximate formulas for frequencies and qualities of the two first modes are found for a two-layer model of the Schumann resonator (SR). The changes of the SR parameters are a response of the Earth-ionosphere resonator to large-scale disturbances of the polar ionosphere.

Published 11 March 2003.

Citation: Roldugin, V. C., Y. P. Maltsev, A. N. Vasiljev, A. V. Shvets, and A. P. Nikolaenko (2003), Changes of Schumann resonance parameters during the solar proton event of 14 July 2000, J. Geophys. Res., 108(A3), 1103, doi:10.1029/2002JA009495.

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