Open AccessMid-latitude ionosphere during two great geomagnetic storms
Author(s) -
Ivana Vasiljević,
Ljiljana R. Cander
Publication year - 1996
Publication title -
annals of geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 60
eISSN - 2037-416X
pISSN - 1593-5213
DOI - 10.4401/ag-4014
Subject(s) - ionosonde , geomagnetic storm , ionosphere , storm , earth's magnetic field , latitude , geology , middle latitudes , geomagnetic latitude , geomagnetic secular variation , atmospheric sciences , climatology , meteorology , geophysics , geodesy , geography , oceanography , physics , electron density , quantum mechanics , magnetic field , electron
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