Mid-latitude ionosphere during two great geomagnetic storms
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Abstract
The ionospheric disturbances observed at many European ionosonde stations in association with the severe geomagnetic storms occurring on 19-20 December 1980 and 11-12 April 1981 were investigated by using the available ionospheric and geomagnetic data. During these storms the ionospheric F region underwent major changes at all mid-latitudes. However, the variations from storm to storm were much larger at lower mid-latitudes. These results support the view that even in assessing the response of the mid-latitude ionosphere to severe geomagnetic storms it is necessary to distinguish carefully between global, regional and local behaviour.
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Vasiljevic, I. M. and Cander, L. R. (1996) “Mid-latitude ionosphere during two great geomagnetic storms”, Annals of Geophysics, 39(4). doi: 10.4401/ag-4014.
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