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Jorgensen et al. 1984
Jorgensen, T.S., Friis-Christensen, E., Wickwar, V.B., Kelly, J.D., Clauer, C.R. and Banks, P.M. (1984). On the reversal from ‘‘sunward’’ to ‘‘antisunward’’ plasma convection in the dayside high latitude ionosphere. Geophysical Research Letters 11: doi: 10.1029/GL011i009p00887. issn: 0094-8276.

Preliminary observations of dayside high latitude ionospheric plasma convection with the Sondrestrom incoherent-scatter radar indicate that plasma can be observed to enter the polar cap region through rotational reversals at most local times between dawn and dusk and not just in a narrow region around noon. Assuming that rotational reversals are signatures of a solar wind-magnetosphere interaction which derives magnetospheric convection, the observations indicate that this interaction occurs over a longitudinally wide area of the dayside magnetosphere. The observations also show that the distribution of F-region plasma in the polar cap is dependent on ionization sources anywhere between dawn and dusk in the dayside high latitude ionosphere.

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Geophysical Research Letters
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American Geophysical Union
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