Abstract
A study is made of the generation and subsequent linear and nonlinear evolution of ultralow-frequency planetary electromagnetic waves in the E region of a dissipative ionosphere in the presence of a nonuniform zonal wind (a sheared flow). Hall currents flowing in the E region and such permanent global factors as the spatial nonuniformity of the geomagnetic field and of the normal component of the Earth’s angular velocity give rise to fast and slow planetary-scale electromagnetic waves. The efficiency of the linear amplification of planetary electromagnetic waves in their interaction with a nonuniform zonal wind is analyzed. When there are sheared flows, the operators of linear problems are non-self-conjugate and the corresponding eigenfunctions are nonorthogonal, so the canonical modal approach is poorly suited for studying such motions and it is necessary to utilize the so-called nonmodal mathematical analysis. It is shown that, in the linear evolutionary stage, planetary electromagnetic waves efficiently extract energy from the sheared flow, thereby substantially increasing their amplitude and, accordingly, energy. The criterion for instability of a sheared flow in an ionospheric medium is derived. As the shear instability develops and the perturbation amplitude grows, a nonlinear self-localization mechanism comes into play and the process ends with the self-organization of nonlinear, highly localized, solitary vortex structures. The system thus acquires a new degree of freedom, thereby providing a new way for the perturbation to evolve in a medium with a sheared flow. Depending on the shape of the sheared flow velocity profile, nonlinear structures can be either purely monopole vortices or vortex streets against the background of the zonal wind. The accumulation of such vortices can lead to a strongly turbulent state in an ionospheric medium.
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D. J. Cavalieri, R. J. Deland, J. A. Poterna, and F. Gavin, J. Atmos. Terr. Phys. 36, 561 (1974).
A. H. Manson, C. E. Heek, and J. B. Gregory, J. Geophys. Res. 86, 9615 (1981).
Z. S. Sharadze, N. V. Mosashvili, G. N. Pushkova, and L. A. Yudovich, Geomagn. Aéron. 29, 1032 (1989).
Q. H. Zhou, M. P. Sulzer, and C. A. Tepley, J. Geophys. Res. 102, 491 (1997).
L. S. Al’perovich, V. I. Drobzhev, V. M. Sorokin, et al., Geomagn. Aéron. 22, 797 (1982).
Z. S. Sharadze, G. A. Dzhaparidze, G. B. Kikvilashvili, et al., Geomagn. Aéron. 28, 446 (1988).
P. R. Fagundes, V. G. Pillat, M. J. Bolzan, et al., J. Geophys. Res. 110, 1302 (2005).
V. Sorokin, Izv. Vyssh. Uchebn. Zaved., Radiofizika 31, 1169 (1988) [Radiophys. Quant. Electron. 31, 827 (1988)]].
V. P. Burmaka, L. S. Kostrov, and L. F. Chernogor, Radiofiz. Radioastron. 8(2), 143 (2003).
L. A. Haykowicz, Planet. Space Sci. 39, 583 (1991).
V. A. Liperovskii, O. A. Pokhotelov, and S. A. Shalimov, Ionospheric Precursors of Earthquakes (Nauka, Moscow, 1992) [in Russian].
K. Y. Cheng, J. Geophys. Res. 97, 16 (1992).
V. I. Drobzhev, G. F. Molotov, Z. S. Sharadze, et al., Ionos. Issled., No. 39, 61 (1986).
N. Rishbeth, Geophys. Space Phys. 10, 799 (1972).
G. D. Aburjania and A. G. Khantadze, Izv. RAN. Fiz. Atmos. Okeana 40(2), 231 (2004).
L. D. Shaefer, D. R. Rock, J. P. Lewis, et al., Detection of Explosive Events by Monitoring Acoustically-Induced Geomagnetic Perturbations (Lawrence Livermore National Laboratory, Livermore, CA, 1999).
O. A. Pokhotelov, V. A. Liperovskii, Yu. P. Fomichev, et al., Dokl. Akad. Nauk SSSR 321, 1168 (1991).
I. Tolstoy, J. Geophys. Res. 7, 1435 (1967).
A. G. Kobaladze and A. G. Khantadze, Soobshch. Akad. Nauk Gruz. SSR 134(1), 97 (1989).
G. D. Aburjania and A. G. Khantadze, Geomagn. Aéron. 42, 245 (2002).
G. D. Aburjania, A. G. Khantadze, and O. A. Kharshiladze, Fiz. Plazmy 28, 633 (2002) [Plasma Phys. Rep. 28, 586 (2002)].
G. D. Aburjania, G. V. Jandieri, and A. G. Khantadze, J. Atmos. Sol.-Terr. Phys. 65, 661 (2003).
G. D. Aburjania, Kh. Z. Chargazia, G. V. Jandieri, et al., Recent Res. Devel. Geophys. 5, 157 (2003).
G. D. Aburjania, A. G. Khantadze, and Kh. Z. Chargazia, Izv. RAN, Fiz. Atmos. Okeana 39, 525 (2003).
G. D. Aburjania, Kh. Z. Chargazia, G. V. Jandieri, et al., Ann. Geophys. 22, 1203 (2004).
A. Khantadze, G. D. Aburjania, and D. G. Lominadze, Dokl. Akad. Nauk 406(2), 244 (2006) [Doklady Phys. 406, 82 (2006)].
G. D. Aburjania, Kh. Z. Chargazia, G. V. Jandieri, et al., Planet. Space Sci. 53, 881 (2005).
G. D. Aburjania and A. Khantadze, Geomagn. Aéron 45, 673 (2005).
G. D. Aburjania, L. S. Alperovich, A. G. Khantadze, and O. A. Kharshiladze, Phys. Chem. Earth 31, 482 (2006).
G. D. Aburjania, Kh. Chargazia, and A. G. Khanadze, Sun Geosphere 1(2), 25 (2006).
G. D. Aburjania, L. S. Alperovich, A. G. Khantadze, and O. A. Kharshiladze, Adv. Space Res. 41, 624 (2008).
E. Gossard and W. Hooke, Waves in the Atmosphere (Elsevier, Amsterdam, 1975; Mir, Moscow, 1978).
E. S. Kazimirovsky and V. D. Kokourov, Motion in the Ionosphere (Nauka, Novosibirsk, 1979) [in Russian].
S. C. Reddy, P. J. Schmid, and D. S. Hennigson, SIAM J. Appl. Math. 53, 15 (1993).
L. N. Trefenthen, A. E. Trefenthen, S. C. Reddy, and T. A. Driscoll, Science 261, 578 (1993).
G. D. Aburjania, A. G. Khantadze, and O. A. Kharshiladze, J. Geophys. Res. 111 (2006).
A. D. D. Graik and W. O. Criminale, Proc. Roy. Soc. London A 406, 13 (1986).
B. F. Farrell and P. J. Ioannou, J. Atmos. Sci. 50, 2201 (1993).
G. D. Chagelishvili, A. D. Rogava, and D. G. Tsiklauri, Phys. Rev. E 53, 6028 (1996).
Y. Kamide, Electrodynamical Processes in the Earth’s Ionosphere and Magnetosphere (Kyoto Sangyo University Press, Kyoto, 1980).
R. E. Dickinson, J. Atmos. Sci. 26(14), 73 (1969).
B. N. Gershman, Dynamics of the Ionospheric Plasma (Nauka, Moscow, 1974) [in Russian].
V. P. Dokuchaev, Izv. Vyssh. Uchebn. Zaved., Radiofizika 4(1), 6 (1961).
J. Pedlosky, Geophysical Fluid Dynamics (Springer, Heidelberg, 1981; Mir, Moscow, 1984), Vol. 1.
V. M. Sorokin and G. V. Fedorovich, Physics of Slow MHD Waves in the Ionospheric Plasma (Energoizdat, Moscow, 1982) [in Russian].
A. B. Mikhailovskii, Theory of Plasma Instabilities, Vol. 2: Instabilities of an Inhomogeneous Plasma (Atomizdat, Moscow, 1971; Consultants Bureau, New York, 1974).
K. Magnus, Schwingungen (Teubner, Stuttgart, 1961; Mir, Moscow, 1982).
Ya. B. Zel’dovich and A. D. Myshkis, Elements of Mathematical Physics (Nauka, Moscow, 1973) [in Russian].
A. V. Timofeev, Resonance Phenomena in Plasma Oscillations (Fizmatlit, Moscow, 2000) [in Russian].
Intense Atmospheric Vortices, Ed. by L. Bengtsson and J. Lighthill (Springer-Verlag, New York, 1982; Mir, Moscow, 1985).
V. M. Cmyrev, V. A. Marchenko, O. A. Pokhotelov, et al., Planet. Space Sci. 39, 1025 (1991).
M. V. Nezlin, CHAOS 4, 187 (1994).
D. Sundkvist, V. Krasnoselskikh, P. K. Shukla, et al., Nature 436, 825 (2005).
Ocean Physics, Vol. 2: Ocean Hydrodynamics, Ed. by V. M. Kamenkovich and A. S. Monin (Nauka, Moscow, 1978).
G. P. Williams and T. Yamagata, J. Atmos. Sci. 41, 453 (1984).
M. V. Nezlin and G. P. Chernikov, Fiz. Plazmy 21, 975 (1995) [Plasma Phys. Rep. 21, 922 (1995)].
G. B. Whitham, Linear and Nonlinear Waves (Wiley, New York, 1974; Mir, Moscow, 1977).
N. P. Shakina, Dynamics of Atmospheric Fronts and Cyclones (Gidrometizdat, Leningrad, 1985) [in Russian].
G. D. Aburjania, Self-Organization of Nonlinear Vortex Structures and Vortex Turbulence in Dispersive Media (KomKniga, Moscow, 2006) [in Russian].
V. I. Petviashvili and O. A. Pokhotelov, Solitary Waves in Plasmas and in the Atmosphere (Energoatomizdat, Moscow, 1989; Gordon & Breach, Reading, MA, 1992).
R. Mallier and S. A. Maslowe, Phys. Fluids 5, 1074 (1993).
G. D. Aburjania, Kh. Z. Chargazia, L. M. Zeleny, and G. Zimbardo, Nonlin. Processes Geophys. 16, 11 (2009).
J. R. Holton, The Dynamic Meteorology of the Stratosphere and Mesosphere (American Meteorological Society, Boston, 1975; Gigrometeoizdat, Leningrad, 1979).
G. D. Aburjania and G. Z. Machabeli, J. Geophys. Res. A 103, 9441 (1998).
G. D. Aburjania, Fiz. Plazmy 22, 954 (1996) [Plasma Phys. Rep. 22, 864 (1996)].
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Original Russian Text © G.D. Aburjania, Kh. Z. Chargazia, 2011, published in Fizika Plazmy, 2011, Vol. 37, No. 2, pp. 199–213.
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Aburjania, G.D., Chargazia, K.Z. Self-organization of large-scale ULF electromagnetic wave structures in their interaction with nonuniform zonal winds in the ionospheric E region. Plasma Phys. Rep. 37, 177–190 (2011). https://doi.org/10.1134/S1063780X10111017
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DOI: https://doi.org/10.1134/S1063780X10111017