Using solar radio burst integrated fluxes to predict energetic proton flux increases

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050 1 4 ‡aQ11 U582e6 no. 791
086 0 ⊔ ‡aD 301.45/39:791
088 ⊔ ⊔ ‡aADA 126329
088 ⊔ ⊔ ‡aAFGL TR 82-253
100 1 ⊔ ‡aBarron, William R.
245 1 0 ‡aUsing solar radio burst integrated fluxes to predict energetic proton flux increases / ‡cWilliam R. Barron.
264 ⊔ 1 ‡aHanscom AFB, Massachusetts : ‡bAir Force Geophysics Laboratories, Air Force Systems Command, United States Air Force, ‡c1982.
300 ⊔ ⊔ ‡a32 pages : ‡billustrations ; ‡c28 cm.
336 ⊔ ⊔ ‡atext ‡btxt ‡2rdacontent
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338 ⊔ ⊔ ‡avolume ‡bnc ‡2rdacarrier
490 0 ⊔ ‡aAFGL-TR ; ‡v82-253
490 0 ⊔ ‡aEnvironmental Research Papers ; ‡vNo. 791
500 ⊔ ⊔ ‡aSpace Physics Division Project 4643.
500 ⊔ ⊔ ‡aADA126329 (from http://www.dtic.mil).
500 ⊔ ⊔ ‡a"31 August 1982."
504 ⊔ ⊔ ‡aIncludes bibliographical references (pages 30-32).
520 ⊔ ⊔ ‡aTime-integrated solar ratio fluxes and their association with satellite observed solar energetic proton flux increases have been studied. The time-integration was only of the U-portion of the radio burst flux increase. The best correlations between the integrated radio fluxes and the proton peak fluxes were realized when the radio fluxes were multiplied by the factor exp ( -3B), where B is the angular distance, in radians, between the site of the flare and the solar footpoint of the magnetic field connection between the sun and the earth. The solar footpoint positions were determined from the solar wind speed. Two-variate linear regressions were computed using the time-integrated radio fluxes at five discrete radio frequencies in the 606 to 8800 MHz frequency interval and peak proton fluxes at> 10 MeV and> 30 MeV. The higher frequencies of 2695, 4995 and 8800 MHz all correlated better with the> 10 -MeV protons than the lower frequencies. The> 30-MeV protons were even better correlated with the higher frequencies, but correlation with the lower frequencies were poorer. The Total Energy Density, E sub T, of the radio burst, an integration across the frequency interval of the time-integrated radio fluxes at each frequency, was found to be better correlated with the proton fluxes than any of the individual frequencies.
538 ⊔ ⊔ ‡aMode of access: Internet.
650 ⊔ 7 ‡aProton flux density. ‡2nasat
650 ⊔ 0 ‡aSolar radiation.
650 ⊔ 0 ‡aProtons ‡xForecasting.
650 ⊔ 0 ‡aSolar radio bursts.
650 ⊔ 0 ‡aSolar flares.
710 2 ⊔ ‡aU.S. Air Force Geophysics Laboratory.
730 0 ⊔ ‡aTechnical Report Archive & Image Library (TRAIL)
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