Physics
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jatp...50..389c&link_type=abstract
(EISCAT Scientific Association, International EISCAT Workshop, 3rd, Bad Lauterberg, Federal Republic of Germany, Mar. 23-27, 198
Physics
34
Auroral Zones, Convection, Electron Precipitation, F Region, Ionospheric Electron Density, Atmospheric Circulation, Plasma Drift
Scientific paper
Intervals of F-region electron density depletions associated with the main (mid-latitude) ionospheric trough are studied using latitude scanning experiments with the EISCAT UHF radar. An empirical model predicting the latitude of the trough is proposed. Simultaneous ion drift velocity measurements show that the main trough is a region of strong (more than several hundred meters per second) westward flow, with its boundary locater approximately 1-2 deg equatorward of the density minimum. The relationship between the convection boundary, the trough minimum and the precipitation boundary is found to be independent of local time and latitude. The relevance of these results is discussed in relation to theoretical models of the F-region at high latitudes.
Collis P. N.
Haggstrom Ingemar
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