Sudden fmin enhancements and sudden cosmic noise absorptions associated with solar X-ray flares.
Abstract
SOLRAD 9 and 10 data are used to study sudden fmin enhancements (SFmEs) and sudden cosmic noise absorptions (SCNAs) in the ionosphere associated with increments of X-ray fluxes during solar flares. This data is studied statistically, and expressions showing dependence of SFmE and SCNA on X-ray flux and solar zenith angle are derived. Threshold X-ray fluxes which will produce minimum SFmE, blackout and minimum SCNA are estimated.
- Publication:
-
Journal of Geomagnetism and Geoelectricity
- Pub Date:
- 1975
- DOI:
- 10.5636/jgg.27.95
- Bibcode:
- 1975JGG....27...95S
- Keywords:
-
- Cosmic Noise;
- Electromagnetic Absorption;
- Ionospheric Propagation;
- Solar Flares;
- Solar X-Rays;
- Sudden Ionospheric Disturbances;
- Atmospheric Attenuation;
- Blackout (Propagation);
- Statistical Correlation;
- Sudden Enhancement Of Atmospherics;
- Zenith