Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986rarlj..33...49o&link_type=abstract
Radio Research Laboratory, Journal (ISSN 0033-8001), vol. 33, March 1986, p. 49-86.
Astronomy and Astrophysics
Astronomy
Ionospheric Electron Density, Radio Astronomy, Solar Flares, Solar Terrestrial Interactions, Solar X-Rays, Sudden Ionospheric Disturbances, Northern Hemisphere, Photoionization, Very Low Frequencies
Scientific paper
The sudden phase anomaly (SPA) data of VLF waves on four long-distance circuits, and time variations in solar X-ray radiation fluxes observed by the SMS-GOES satellite are analyzed in order to elucidate the solar-terrestrial disturbances of June-September 1982. The June and July 1982 data are compared to the disturbances of August 1972. The theoretical relation between normalized maximum phase advances and maximum enhanced solar X-ray flare radiation fluxes is investigated. The physical quantities of maximum SPAs and height distributions of enhanced electron density are calculated. The solar electromagnetic spectrum, and the sudden enhancement of atmospherics and geomagnetic solar flare effect are examined.
Ohshio M.
Ohtaka Kazuhiro
Terajima Y.
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