Results 171 to 180 of about 114,060 (217)

The variation of foF2 in the equatorial ionosphere

2004 Asia-Pacific Radio Science Conference, 2004. Proceedings., 2005
The ionospheric variation plays an important role in high frequency (HF) propagation. HF radio waves emitted by a transmitter at a given elevation angle may travel and reach the designated receiver via reflection off the ionosphere in a given circuit.
null Zhang Rui Xue, null Teo Kien Boon
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The Equatorial Ionospheric Anomaly and the Equatorial Electrojet

Radio Science, 1969
It is shown that for the American zone the F‐region equatorial anomaly and the equatorial electrojet are highly correlated, whereas the anomaly and the Sq current system correlate poorly. A suggested explanation for the correlation is that the eastward electric field which drives the electrojet is also present in the F‐region and there causes upward ...
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Electric fields in the equatorial ionosphere

Journal of Atmospheric and Terrestrial Physics, 1977
Abstract During a Commonwealth Collaborative Campaign between India and the U.K., artificial ion and neutral clouds were released at altitudes between 150 km and 160 km, using Petrel rockets launched from the TERLS range, Thumba, India. The experiments were conducted at local dusk, and the magnitude of the electric field components and neutral wind ...
B.G. Anandarao, J.N. Desai, M. Giles, G. Martelli, R. Raghavarao, P. Rothwell   +5 more
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Temperature and composition of the equatorial ionosphere

Journal of Geophysical Research, 1967
Equatorial ionosphere charged particle composition and ion and electron temperatures using incoherent scattering autocorrelation ...
D. T. Farley, J. P. McClure, D. L. Sterling, J. L. Green   +3 more
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Equatorial ionospheric drift and the electrojet

Planetary and Space Science, 1971
The results of the horizontal drift measurements at Thumba (0.6°S dip), a station situated at the magnetic equator, are studied in relation to the equatorial electrojet currents estimated from the variations of H component of the geomagnetic field. The daily, seasonal, and latitudinal variations of drift show a close similarity between the drift and ...
H. Chandra, R.K. Misra, R.G. Rastogi
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Ionisation ledges in the equatorial ionosphere

Nature, 1974
A cusp formation on topside ionograms recorded at equatorial latitudes by means of the satellite Alouette I, has been discussed by earlier workers1, 2. The cusps are associated with an ionisation ledge lying along the magnetic field line passing through the peaks of the equatorial anomaly.
R. RAGHAVARAO, M. R. SIVARAMAN
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Electromagnetic resonances in the equatorial ionosphere

Space Science Reviews, 1982
The diagnostic and communication possibilities, based on resonant properties of ionospheric magnetoplasma near the Equator, are discussed for a wide spectral range of electromagnetic waves. The utilization of geometrical resonances of both natural and artificial origin and plasma eigenmodes are considered for a model of anisotropic heterogeneous ...
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Study of the Equatorial Ionosphere.

1976
Abstract : Data from five years' daily records of the amplitude and Faraday rotation angle of the 136.47 MHz beacon on ATS-3 are analyzed to give the dependence of scintillation on sunspot number. The seasonal variation is then found. Finally, correlation among scintillation index (SI), total electron content (TEC) and magnetic activity (KP) is ...
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Study of the Equatorial Ionosphere: The Equatorial Evening Minimum in the Total Electron Content of the Ionosphere and Its Role in Equatorial Scintillation.

1977
Abstract : A minimum in the total electron content of the equatorial ionosphere frequently appears shortly after sunset in measurements of Faraday rotation made at Legon, Ghana (latitude 5.63 deg N, longitude -0.19 deg E, magnetic dip 8 deg S). This paper describes the phenomenon and investigates its occurrence characteristics over a period of six ...
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Ionospheric Perturbation: A Review of Equatorial Plasma Bubble in the Ionosphere

2019 6th International Conference on Space Science and Communication (IconSpace), 2019
Ionospheric irregularities including the Equatorial Plasma Bubbles (EPB), equatorial anomaly, equatorial electrojet and Travelling Ionospheric Disturbances (TID). This paper reviews the irregularities in the ionosphere focused on the EPB. EPB has drawn great interest due to the severe effects of the communications and satellite-based navigation system.
M.H. Mokhtar, N.A. Rahim, M.Y. Ismail, S.M. Buhari   +3 more
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