Prediction of Solar-Terrestrial Disturbances: Decay Phase of Energetic Proton Events.
Final scientific rept. 1 Jul 79-30 Sep 82,
JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB
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The decay phase of solar proton events, as observed at Earth, depends strongly on the proton injection history, the distribution of the proton population in solar longitude, and the state of the interplanetary medium. In an attempt to gain an additional diagnostic of these complex conditions, the evolution of the flux anisotropy is examined, both theoretically and observationally. In relatively simple events, the component of the flux anisotorpy parallel to the interplanetary magnetic field proves to be a useful indicator. In more complicated events additional information from solar wind, magnetic field, and lower energy 1 MeV ions would appear to be necessary. Research papers on these related quantities are also cited. Author
- Atmospheric Physics