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A Statistal Study of Large Field-Aligned Flows of Thermal Ions at High-Latitudes

Keating, John and Mulligan, F.J. and Doyle, D.B. and Winser, K.J. and Lockwood, M. (1990) A Statistal Study of Large Field-Aligned Flows of Thermal Ions at High-Latitudes. Planetary and Space Science, 38 (9). pp. 1187-1201.

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Abstract

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 occurance of such events for the altitude range 200-500km, based on 3 years of incoherent scatter data. Correlations of the upgoing ion flux at 400km 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.

Item Type: Article
Keywords: Thermal Ions; High-Latitudes; Statistical;
Subjects: Science & Engineering > Experimental Physics
Item ID: 819
Depositing User: Dr. Frank Mulligan
Date Deposited: 04 Dec 2007
Journal or Publication Title: Planetary and Space Science
Publisher: Elsevier / Pergamon Press
Refereed: Yes
URI:

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