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Now showing items 1-20 of 185

Solar cycle and annual variations of Sq(H) at Alibag

Yacob, A.; Rao, D. Radhakrishna (1966)

A study of the amplitudes and phase angles of the first two harmonics of the monthly Sq(H) at Alibag with respect to solar activity (sunspot number, R), for the period 1905–1960, shows that (1) the amplitudes of both the ...
Seasonal change in the position of the equatorial electrojet in Indian region

Rao, D.R.K. (1967)
Sunspot cycle and seasonal variations in the position and intensity of the equatorial electro] et in the Indian region

Rao, K.N.; Rao, D.R.K.; Rao, K.S. Raja (1967)

Recent views on the equatorial electrojet are briefly reviewed. Seasonal and annual values of the quiet day ranges of H and Z are calculated for the four Indian magnetic observatories, Alibag, Annamalainagar, Kodaikanal ...
Power spectra of geomagnetic pulsations during November 1960 storms

Bhargava, B.N.; Rao, D.R.K. (1968)
Secular variation of geomagnetic elements at Alibag

Rao, D.R.K.; Bansal, R.K. (1969)
Equatorial variation of the 27-day oscillation in the horizontal intensity

Bhargava, B.N.; Rao, D.R.K. (1970)

Mean daily values of the horizontal intensity for four observatories in the equatorial region of South India have been subjected to spectral analysis. The power densities near the 27-day period have been computed separately ...
Separation of lunar daily geomagnetic variations into parts of oceanic and ionospheric origin in the Indian region

Sastri, N.S.; Rao, D.R.K. (1971)

Seasonal changes and variation in the equatorial region of the lunar semi-diurnal component in H and Z, separated into parts of oceanic and ionospheric origin by Malin's method, are examined for four Indian observatories, ...
Lunar partial tides in H at Alibag

Rao, D.R.K.; Sastri, N.S. (1971)
Lunar and luni-solar variations of the geomagnetic field in the Indian region

Rao, D.R.K. (1972)

Lunar and luni-solar geomagnetic components have been computed upto four harmonics for low latitude station Alibag, outside equatorial electrojet belt, and the equatorial electrojet stations Annamalainagar, Kodaikanal and ...
Annual variation of L(H) and S(H) at Alibag

Rao, D.R.K.; Arora, B.R. (1974)
On the association of lunar daily variations in H at Alibag with the degree of magnetic activity

Rao, D.R.K.; Arora, B.R. (1975)

The lunar semidiurnal term of the phase law tides in the horizontal intensity at Alibag is found to undergo a systematic decrease in amplitude with increase in magnetic activity. An examination of the results reported ...
Parameters of Indian equatorial electrojet

Thakur, N.K.; Rao, D.R.K. (1975)

Using a comprehensive three dimensional model of equatorial eleotrojet, parameters of the Indian equatorial eleotrojet for winter of 1972 are computed and are compared with those obtained using uniform band model. The ...
Periodic variations in the equatorial electrojet strength associated with planetary wave

Bhargava, B.N.; Rao, D.R.K.; Arora, B.R. (1980)

Under the assumption that the diurnal range of the equatorial field represents the strength of the electrojet current, quasi-stationary periodicities in the intervals of 12 to 16 days and 5 to 7 days are inferred from the ...
On some new features of semiannual variation of the geomagnetic field

Bhargava, B.N.; Rao, D.R.K. (1983)

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Daytime equatorial VHF radiowave scintillations and sporadic-E layer

Koparkar, P.V.; Rastogi, R.G.; Sastri, J.H. (1989)

Daytime VHF radiowave scintillations at Trivandrum are compared with the E-region irregularities at Kodaikanal. It is shown that daytime scintillations at Trivandrum are basically of two categories. One type of scintillations ...
Geomagnetic PC3 and PC4 pulsations at low latitudes

Rao, D.R.K. (1992)
Complexities in the variation of declination component (D) of the geomagnetic field in the Indian region

Alex, S.; Jadhav, L.; Rao, D.R.K. (1992)
VHF scintillations as a diagnostic tool for the study of ionospheric irregularities

Pathan, B.M. (1994)

In this paper we present the results of observations of the scintillations of radio beacon on 250.351 MHz from geostationary satellite FLEETSAT (73° E) recorded at Bombay on April 9–10, 1992 during night hours. The ...
Zonal drifts of ionospheric irregularities at temperate latitude in the Indian region

Kumar, Sushil; Gwal, A.K.; Pathan, B.M.; Rao, D.R.K. (1995)
Decay of the Dst field of geomagnetic disturbance after substorm onset and its implication to storm-substorm relation

Iyemori, T.; Rao, D.R.K. (1996)

In order to investigate the causal relationship between magnetic storms and substorms, variations of the mid-latitude geomagnetic indices, ASY (asymmetric part) and SYM (symmetric part), at substorm onsets are examined. ...

Now showing items 1-20 of 185

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