Prediction of Solar-Terrestrial Disturbances: Decay Phase of Energetic Proton Events.
Abstract
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1982
- Accession Number
- ADA130103
Entities
People
- Edmond C. Roelof
Organizations
- Johns Hopkins University