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|Title:||Effects of Geomagnetic Storms on the Ionosphere as Observed at Gauhati|
Barbara, A K
|Abstract:||Effects of geomagnetic storms on the ionosphere were studied at Gauhati (geomag. lat., 15° 10' N; geomag long., 162o25' E and dip 37°). Twenty-five storms covering the periods 1964-73, 1977-78 were taken for this purpose. About 50% of these storms are seen to cause negative effects on the ionization density at almost all the phases of the storms. Storms causing combined positive and negative effects are also observed. It has been found that in most of the cases hpF2 and corresponding foF2 values show a negative correlation. Occasionally, the recovery pattern of ionization density exhibits an oscillatory character. The storm-time behaviour does not fit well into the theoretical model proposed by certain workers.|
|ISSN:||0975-105X (Online); 0367-8393 (Print)|
|Appears in Collections:||IJRSP Vol.08(5&6) [October & December 1979]|
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