Ionospheric Effects of Solar Flares 1948: Preliminary Report No. 1

Regular recordings of ionspheric effects of solar flares with different kinds of apparatus were started at the Geophysical Observatory, Chalmers University of Technology, Gothenburg early in 1948. The results of the first half year are presented and analysed in this preliminary communication. The statistical distribution of radiation sources of stronger and weaker fade-outs across the solar disk is shown. The magnitude and probability of the absorption of the ultraviolet fade-out radiation in the solar corpuscular beam is discussed. DOI: 10.1111/j.2153-3490.1949.tb01924.x