Papers on Ionosphere and Upper Atmosphere
Decrease of the first Schumann resonance frequency during solar proton events
Article first published online: 20 SEP 2012
Copyright 2001 by the American Geophysical Union.
Journal of Geophysical Research: Space Physics (1978–2012)
Volume 106, Issue A9, pages 18555–18562, 1 September 2001
How to Cite
2001), Decrease of the first Schumann resonance frequency during solar proton events, J. Geophys. Res., 106(A9), 18555–18562, doi:10.1029/2000JA900118., , , and (
- Issue published online: 20 SEP 2012
- Article first published online: 20 SEP 2012
- Manuscript Accepted: 15 JUL 2000
- Manuscript Received: 15 JUL 1999
The variations of the first-order Schumann resonance frequency in Kola peninsula are studied for four solar proton events on November 4 and 6, 1997 and on May 2 and May 6, 1998. It is found that the frequency decreases by about 0.15 Hz during the peaks of the proton penetrations. Such a decrease is in agreement with modeling calculations. A very intensive solar X ray burst preceding the proton flare on November 6 caused an increase of the resonance frequency. The decrease of amplitude about of 0.2 pT and the decrease of the resonance bandwidth about of 0.2 Hz are observed in the November events.