Anisotropies in the interplanetary intensity of solar protons E/sub p/ > 0.3 MeV

By using Explorer 35 interplanetary observations of solar protons of Ep > 0.3 Mev during ten selected solar events (1967-1970) the time dependence of intensity and of the angular distribution of intensity has been studied for the first time in the sub-Mev range of energy. The respective contributions of diffusive and convective transport are resolved. Results are qualitatively similar to those of McCracken et al. (1968, 1971) in the energy range 7.5 < Ep < 45 Mev; but, as was expected, convective transport is found to be relatively more important at the lower energies. The convective component of the anisotropy vector yields values of the solar wind velocity in good agreement with directly measured values.