Analysis of the sunset equatorial ionosphere using absorption data
Abstract
The absorption of a radio waves transmitted obliquely from a transmitter located at a distance about 110km in Cotonou from Lagos has been investigated. The absorption has been determined for a signal that was received on a tuned frequency of about 4.9MHz. The useful parameters for the determination of absorption have been obtained from manual on ionospheric absorption measurements. The results have been based on the post sunset data which have been calculated for different days.
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References
Baumjohann, W. and Treumann, R. A. Basic space Plasma Physics. Imperial College Press, London, 1996.
Kivelson, M. G. and Russell, C. T. Introduction to Space Physics. Cambridge University Press, 1995.
Parks, G. K. Physics of Space Plasmas: An introduction. Addison-Wesley Publishing Company, The Advanced Book Program, 350 Bridge Parkway, Redwood City, CA 94065, 1991.
Folkestad, K. Ionospheric radio communication. Plenum Press, New York, 1968.
Rawer, K. Manual on Ionospheric absorption measurements. J. of Atmos. and Terr. Phys. 25. 1967.
Rawer, K. Wave propagation in the ionosphere; Developments in Electromagnetic theory and applications. Kluwer Academic Publishers. Vol. 5.1993.
Banks, P. M. and Kockarts, G. Aeronomy, Part A. Academic Press Inc. LCCC, 1973.
Danilov, A. D. Chemistry of the Ionosphere. Plenum Press, New York (London), 1970.
Kelso, J. M. The calculation of ionospheric electron density distributions. J. of Atmos. and Terr. Phys., 1950; 10: 103-109.
Kelso, J. M. A procedure for the determination of the vertical distribution of the electron in the ionosphere. J. Geophy. Res., 1952; 57: 357-367.
Thrane, E. V. & Piggot, W. R.. The electron densities in the E and D regions above Kjeller. J. of Atmos. and Terr. Phys. 1966; 28: 467-479.
Thrane, E. V. Information on the D and E region electron density profiles. Radio Science. 1972; 7(1): 143-145.
Mishin, E. V. and Atamaniuk, B. Radio wave turbulent absorption due to electron injection in the ionosphere. J. of Atmos. and Terr. Phys. 1995; 57: 193-199.
Belova, E. G., Pashin, A. B. a Lyatsky, W. B. Passage of a powerful HF radio wave through the lower ionosphere as a function of initial electron density profiles. J. of Atmos. and Terr. Phys.1995; 37: 265-272.
Unal, I., Ozcan, O. and Canyilmaz, M. Ionospheric absorption of HF radio wave in vertical propagation. Iranian journal of science. Transaction A, 2007; 31(4).
Nielsen, E., Morgan, D. D., Kirchner, D. L., Plaut, J. and Picardi, G. Absorption and reflection of radio wave in the Martian ionosphere. Planetary and space science. 2007; 55: 864-870.
Ionospheric data, Bulletin 1968. Ibadan, Nigeria.
Chiptonkar, M. W. and Karekar, R. N. The unrise and sunset effects on the level of atmospheric activity on the 27 KC/s band. J. of Atmos. and Terr. Phys. 1962; 25: 23-34.
Schwentek, H. (1976). Oblique field strengthobservations on frequencies above 2 MHz. Manual on ionospheric absorption measurements. Report UAG-57.
Shamsi, (1984). Oblique incidence ionospheric absorption near magnetic equator. University of Lagos Press. Lagos.
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