IIA Institutional Repository

Browsing by Subject "Spread F"

Browsing by Subject "Spread F"

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  • Ionosphere scintillations associated with features of equatorial ionosphere 
    Chandra, H; Vats, H. O; Sethia, G; Deshpande, M. R; Rastogi, R. G; Sastri, J. H; Murthy, B. S (European Geophysical Society, 1979-09)
    Amplitude scintillations of radio beacons aboard the ATS-6 satellite on 40 MHz, 140 MHz and 360 MHz recorded during the ATS-6 phase II at an equatorial station Ootacamund (dip 4 deg N) and the ionograms at a nearby station ...
  • On the relationship between geomagnetic activity and spread-F configurations at Kodaikanal 
    Sastri, J. H; Sasidharan, K (European Geophysical Society, 1980-06)
    A study is made of the seasonal and sunspot cycle trends in the effect of geomagnetic activity on the nocturnal occurrence of spread-F configurations at Kodaikanal (Geo. Mag. Lat. 0.60 N, dip 3.50 N), using ionogram data ...
  • Onset of equatorial spread-f 
    Sastri, J. H; Murthy, B. S (European Geophysical Society, 1978)
  • Patchy occurrence of equatorial spread-F 
    Sastri, J. H (European Geosciences Union, 1985-10)
    From a statistical analysis of ionogram data of Kodaikanal (dip 3.5 deg N) it is shown that, during years of high sunspot activity, the discontinuous or patchy occurrence of equatorial spread-F (ESF) depends on season. ...
  • Range and frequency spread-F at Kodaikanal 
    Sastri, J. H; Sasidharan, K; Subramanyam, V; Srirama Rao, M (European Geophysical Society, 1979-09)
    Using ionogram data at Kodaikanal (geomagnetic lat. 06 deg N, Dip 3.5 deg N) over a seven year period, Jan. 1957-Dec. 1963, a study is made of the seasonal and sunspot cycle variations in the nocturnal occurrence of amplitude ...
  • Spread-F at Kodaikanal 
    Sastri, J. H; Murthy, B. S (European Geophysical Society, 1975-06)
    Quarter-hourly ionograms of Kodaikanal for the period January 1968 to December 1969 have been examined for occurrence of Spread-F. Spread-F occurrence as a feature on ionograms is more or less a regular nocturnal event ...

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