Accession Number : AD0686662

Title :   USING SOLAR X-RAYS AS INDICATORS OF SOLAR-FLARE ACTIVITY.

Descriptive Note : Interim rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Horan,D. M. ; Kreplin,R. W. ; McClinton,A. T. , Jr. ; Schneider,L. C.

Report Date : 27 MAR 1969

Pagination or Media Count : 24

Abstract : X-ray and particle emission during solar flares can sufficiently increase the electron density in the lower regions of the ionosphere to cause disruption of high-frequency radio communications. Criteria have been established to predict periods of high solar activity during which solar flares capable of disrupting communications might occur. A study of solar-flare occurrence and solar x-ray flux levels over 14 months has shown that solar flares are three times more likely to occur when the criteria are met than when they are not met. (Author)

Descriptors :   (*IONOSPHERIC PROPAGATION, SOLAR FLARES), (*SOLAR FLARES, PREDICTIONS), (*SOLAR RADIATION, X RAYS), ELECTRON DENSITY, COMMUNICATION AND RADIO SYSTEMS, HIGH FREQUENCY, SCIENTIFIC SATELLITES

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE