Other
Scientific paper
Apr 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jgr....82.1487b&link_type=abstract
Journal of Geophysical Research, vol. 82, Apr. 1, 1977, p. 1487-1492. ERDA-NASA-supported research.
Other
54
Abundance, Flow Characteristics, Helium, Proton Density (Concentration), Solar Wind Velocity, Alpha Particles, Chromosphere, Data Reduction, Particle Flux Density, Solar Corona, Statistical Analysis
Scientific paper
The variability of the basic solar wind flow parameters in highand low-speed flows is submitted to a statistical analysis. Particular attention is given to the uniformity of solar wind high-speed flow conditions by comparing them with those of the low-speed so-called quiet solar wind. With the exception of the solar wind bulk velocity, the average fractional variation of each of a selected sample of basic solar wind parameters is found to be substantially larger during low-speed flow conditions than during high-speed flow conditions at 1 AU. As a statistical ensemble of events, the only thing steady and uniform about low-speed conditions is the bulk velocity. In all other respects, high-speed flows form a much more uniform ensemble of solar wind conditions than do the low-speed flows. It is concluded that the use of average high-speed flow parameters for comparison with steady-state spherically symmetric models of the coronal expansion is meaningful.
Asbridge J. R.
Bame J. Jr. S.
Feldman William C.
Gosling Jack T.
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