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Vertical lifting of ionization during geomagnetic storms from satellite measurements of ion composition (1977)

Maier, E. J. ; Rao, B. C. N. ; Goel, M. K. ; [et al.]

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Publication Date: 2011-08-17

Description: Magnetic-storm phenomena at low latitudes are discussed based on ion-composition /O(+), H(+), He(+)/ and electron- and ion-temperature measurements from the OGO-4 and Isis-2 satellites. For the moderately severe storms considered, the effects of changes in the neutral composition and in the neutral and plasma temperatures are discussed, and it is shown that these changes would not produce the observed O(+) increase during storms at low latitudes. It is suggested that the observed increase in O(+) in the topside region is a manifestation of the vertical lifting of ionization of the F-layer. The argument in favor of vertical lifting is further substantiated by the observed changes in the F-region critical frequency and the height parameters.

Keywords: GEOPHYSICS

Type: Journal of Geomagnetism and Geoelectricity; 29; 3, 19; 1977

Format: text

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