A statistical study of large field-aligned flows of thermal ions at high-latitudes
Keating, J.G., Mulligan, F.J., Doyle, D.B., Winser, K.J. and Lockwood, M. (1990) A statistical study of large field-aligned flows of thermal ions at high-latitudes. Planetary and Space Science, 38 (9). pp. 1187-1201. ISSN 0032-0633
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To link to this item DOI: 10.1016/0032-0633(90)90026-M
A number of case studies of large, transient, field-aligned ion flows in the topside ionosphere at high-latitudes have been reported, showing that these events occur during periods of frictional heating and/or intense particle precipitation. This study examines the frequency of occurrence of such events for the altitude range 200–500 km, based on 3 years of incoherent scatter data. Correlations of the upgoing ion flux at 400 km with ion and electron temperatures at lower altitudes are presented, together with a discussion of possible mechanisms for the production of such large flows. The influence of low-altitude electron precipitation on the production of these events is also considered.