Abstract
The data of observations of plasma density in the large-scale ionospheric trough by the ion trap onboard the Kosmos-900 satellite on April 15, 1977, are presented. They enable one to understand both the general configuration and the fine details of the trough. There are sharp gradients of density (especially, in the subtroughs) superimposed on the less prominent variations of density in the main trough, which are characteristic of the average pattern of the trough. It was demonstrated that one of the possible mechanisms of forming the troughs(i.e., plasma cavities) is the electrostatic instability of plasma in the topside ionosphere.
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REFERENCES
Makarova, L.N., The Influence of Field-Aligned Currents and Convection on Formation of the Ionospheric Trough, Geomagn. Aeron., 1984, vol. 24, no. 1, pp. 141-145.
Spiro, R.W., Heelis, R.A., and Hanson, W.B., Ion Convection and the Formation of the Mid-Latitude F Region Ionization Trough, J. Geophys. Res., 1978, vol. 83, no. 9, pp. 4255-4264.
Ruster, R., Solution of the Coupled Ionospheric Continuity Equations and the Equations of Motion for the Ions, Electrons, and Neutral Particles, J. Atmos. Terr. Phys., 1971, vol. 33, no. 2, pp. 137-147.
Kolesnik, A.G., Chernyshev, V.I., and Belov, M.R., Some Features of Space-Time Behavior of the Main Ionospheric Trough, Geomagn. Aeron., 2001, vol. 41, no. 3, pp. 342-346.
Bryunelli, B.E. and Namgaladze, A.A., Fizika ionosfery (Physics of the Ionosphere), Moscow: Nauka, 1988.
Gdalevich, G.L., Isaev, N.V., et al., Influence of Electric Field on the Structure of the Main Ionospheric Trough, Kosm. Issled., 1990, vol. 28, no. 2, pp. 235-242.
Krinberg, I.A. and Tashchilin, A.V., Ionosfera i plazmosfera (Ionosphere and Plasmasphere), Moscow: Nauka, 1984.
Izhovkina, N.I., Karpachev, A.T., and Pulinets, S.A., Structural Peculiarities of the Daytime Topside Ionosphere from the Measurements onboard the Satellite Interkosmos-19, Kosm. Issled., 1996, vol. 34, no. 2, pp.125-129.
Izhovkina, N.I., Afonin, V.V., Karpachev, A.T., et al., The Structure of the Ionospheric Trough for Different Levels of Geomagnetic Disturbances and the Sources of Plasma Heating in the Daytime Topside Ionosphere, Geomagn. Aeron., 1999, vol. 39, no. 4, pp. 39-43.
Izhovkina, N.I., Karpachev, A.T., Prutenskii, I.S., et al., Processes of Heating and Decay for Irregularities in Electrostatically Unstable Plasma of the Topside Ionosphere, Geomagn. Aeron., 2001, vol. 41, no. 4, pp. 491-494.
Kennel, C.F., Low-Frequency Whistler Mode, Phys. Fluids, 1966, vol. 9, no. 11, pp. 2190-2209.
Haerendel, G., Results from Barium Cloud Releases in the Ionosphere and Magnetosphere, Space Res., 1973, vol. 13, pp. 601-617.
Rothkaehl, H., Klos, Z., Kiraga, A., et al., The HF Noises as Indication of the Ionospheric Trough Location, World Space Congr.: 43rd Congr. Int. Astronaut. Fed. (IAF) and 29th Plen. Meet. Comm. Space Res. (COSPAR), Washington, DC, 28 Aug.–5 Sept, 1992, Book Abstr., 1992.
Mikhailovskii, A.V., Teoriya plazmennykh neustoichivostei (Theory of Plasma Instabilities, Vol. 1 and 2), Moscow: Atomizdat, 1975, 1977.
Mikhailovskii, A.B., Elektromagnitnye neuctoichivosti neodnorodnoi plazmy, Moscow: Energoatomizdat, 1991. Translated under the title Electromagnetic Instabilities in an Inhomogeneous Plasma, Bristol, UK: Adam Hilger Inst. of Physics, 1992.
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Gdalevich, G.L., Izhovkina, N.I. & Ozerov, V.D. Sources of Plasma Troughs in the Midlatitude and Subauroral Topside Ionosphere. Cosmic Research 41, 230–234 (2003). https://doi.org/10.1023/A:1024098831011
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DOI: https://doi.org/10.1023/A:1024098831011