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Browsing by Author "Murthy, B. S"

Browsing by Author "Murthy, B. S"

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  • Nighttime Pi2 micropulsations at Kodaikanal 
    Sastri, J. H; Murthy, B. S (National Institute of Science Communication And Information Resources, 1975-09)
  • Observations on spread-F at Kodaikanal 
    Sastri, J. H; Murthy, B. S (National Institute of Science Communication And Information Resources, 1975-06)
    A study of quarter-hourly ionograms of Kodaikanal (geomag. lat: O'6oN; dip: 3'5°N) showed several instances when the spread-F disappears and subsequently. reappears in two hrs or less during it night. Investigation of such ...
  • Occurrence of M and N echoes at the equatorial station, Kodaikanal 
    Sastri, J. H; Murthy, B. S (National Institute of Science Communication And Information Resources, 1975-03)
    Results are presented from a study on the occurrence of M and N traces on ionograms at the equatorial station Kodaikanal, with particular reference to their associations with various sporadic configurations. It is shown ...
  • Occurrence of night sporadic-E (Es) in relation to geomagnetic storms 
    Sastri, J. H; Murthy, B. S; Sasidharan, K (Indian Academy of Sciences, 1978-08)
  • On the occurrence of AQDs at Kodaikanal 
    Sastri, J. H; Murthy, B. S (The Council of Scientific and Industrial Research, 1978-02)
    A study is made of the occurrence of 'abnormal quiet days' (AQDs) at Kodaikanal (10 deg 14 min N, 77 deg 28 min E; dip 3.5 deg N) using H-field data over a 26-yr period (1950-1975). The results show distinctive differences ...
  • On the relationships between sfe (crochet) and solar X-ray and microwave bursts 
    Sastri, J. H; Murthy, B. S (D.Reidel Publishing Co.,, 1975-04)
    Geomagnetic crochets (sfe) observed at Kodaikanal over the period 1966-71 have been studied in relation to solar X-ray bursts observed by NRL satellite (SOLRAD-9) in the 0.5-3 A, 1-8 A and 8-20 A bands and radio bursts ...
  • Onset of equatorial spread-f 
    Sastri, J. H; Murthy, B. S (European Geophysical Society, 1978)
  • Small scale fluctuations in the F-region critical frequency at Kodaikanal 
    Sastri, J. H; Murthy, B. S (Japan Science and Technology Agency, 1977-03)
    Some preliminary results obtained on the small scale fluctuations in the F-region critical frequency at Kodaikanal (Dip 3.5 deg) using 1-min interval ionograms, are presented. Spectral analysis showed the fluctuations to ...
  • 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 ...
  • Sudden commencements and impulses in Kodaikanal magnetograms - their hourly frequency 
    Murthy, B. S (Manager of Publications Civil Lines Delhi, 1959-04)
    The diurnal variation in the frequencies of sudden commencements (SCs) and sudden impulses (SIs) at Kodaikanal (10.2°N, 77.5°E) is analysed from the data for the period 1949-1957. The hourly frequency curve of SCs and SIs ...
  • Total electron content and F-region electron density distribution near the magnetic equator in India 
    Rastogi, R. G; Sethia, G; Chandra, H; Deshpande, M. R; Davies, K; Murthy, B. S (Pergamon Press, 1979-06)
    Total electron content derived from the group delay measurements of ATS-6 radio beacons received at Ootacamund (India) are compared with the electron-density vs height distributions derived from the ionosonde data of the ...
  • Travelling ionospheric disturbances in the lower F-region 
    Murthy, B. S; Ramachandra Rao, B (Indian Academy of Sciences, 1979-06)

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