Accession Number : AD0669347

Title :   OBSERVATION AND FORECASTING OF SOLAR PROTON EVENTS.

Descriptive Note : Air Force Surveys in Geophysics no. 203,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Castelli,John P.

Report Date : MAR 1968

Pagination or Media Count : 28

Abstract : Solar burst characteristics in the radio microwave region are used to differentiate between large flares that might produce proton events and those that might not. Proton events produce high-level absorption, disrupt polar communications, and can be dangerous to man and equipment in space. They may precede the auroral and magnetic storms that disturb many radiowave propagation systems. The probability of a proton event can now be predicted, an AFCRL study of the characteristics of flare-associated centimeter radar bursts having established that a signature of proton events is a high flux density in the 3-cm region and a particular burst peak flux spectral configuration. (Author)

Descriptors :   (*EXTRATERRESTRIAL RADIO WAVES, SOLAR FLARES), (*SOLAR FLARES, PROTONS), SPECTRUM SIGNATURES, MICROWAVE FREQUENCY, AURORAE, MAGNETIC STORMS, SOLAR DISTURBANCES, PREDICTIONS

Subject Categories : Astrophysics
      Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE