Self-organization of large-scale ULF electromagnetic wave structures in their interaction with nonuniform zonal winds in the ionospheric E region

Aburjania, G. D.; Chargazia, Kh. Z.

doi:10.1134/s1063780x10111017

Cited by 1 publication

(7 citation statements)

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“…For example, at Z = 300 km, the characteristic temporal scale is 10 3 s, the spatial scale is a few thousand km, and the velocity scale is a few km s −1 . These values are in qualitative agreement with observational results of nearly longitudinal propagation of slow MHD/PEMW disturbances (Burmaka et al, 2006;Aburjania and Chargazia, 2011).…”

Section: Nonlinear Equations For Pemw At Arbitrary Altitudes From D Tsupporting

confidence: 80%

“…Note that in contrast to the previous PEMW models (see Aburjania et al, 2002Aburjania et al, , 2003aAburjania and Chargazia, 2011;Aburjania et al, 2005;Kaladze et al, 2003) in this case the perturbed velocity U z is not equal to zero. By taking the z component of the first equation in Eqs.…”

Section: Yu Rapoport Et Al: Excitation Of Planetary Electromagneticmentioning

confidence: 66%

“…Herron (1966) has found that these waves can be captured into the ionospheric waveguide at the Alfvén speed minimum in the F region. Further development of these ideas brought the concept of vortex planetary electromagnetic waves (Kaladze et al, 2003;Khantadze, 1973;Aburjania et al, 2002Aburjania et al, , 2003aAburjania et al, , 2005Aburjania and Chargazia, 2011;Rapoport et al, 2011Rapoport et al, , 2012c. The developed theory of PEMW is supported by a number of observational results of planetary-scale electromagnetic perturbations (see e.g.…”

Section: Introduction and Formulation Of The Problemmentioning

confidence: 91%

“…The developed theory of PEMW is supported by a number of observational results of planetary-scale electromagnetic perturbations (see e.g. Aburjania and Chargazia, 2011;Burmaka et al, 2006). However, further theoretical and experimental investigations were necessary to reveal both "slow" and "fast" PEMWs in the ionosphere region (Khantadze, 1973;Aburjania et al, 2003a;Kaladze et al, 2003;Aburjania and Chargazia, 2011).…”

Section: Introduction and Formulation Of The Problemmentioning

confidence: 97%

“…Aburjania and Chargazia, 2011;Burmaka et al, 2006). However, further theoretical and experimental investigations were necessary to reveal both "slow" and "fast" PEMWs in the ionosphere region (Khantadze, 1973;Aburjania et al, 2003a;Kaladze et al, 2003;Aburjania and Chargazia, 2011). Southwood and Kivelson (1993) have found that travelling ionospheric vortices (TIVs) can be R is the radius of the Earth, 0 is the angular velocity of the Earth rotation; λ = 0 and λ = π/2 correspond to equator and pole, respectively.…”

Section: Introduction and Formulation Of The Problemmentioning

confidence: 99%

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Excitation of planetary electromagnetic waves in the inhomogeneous ionosphere

et al. 2014

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Abstract. In this paper we develop a new method for the analysis of excitation and propagation of planetary electromagnetic waves (PEMW) in the ionosphere of the Earth. The nonlinear system of equations for PEMW, valid for any height, from D to F regions, including intermediate altitudes between D and E and between E and F regions, is derived. In particular, we have found the system of nonlinear one-fluid MHD equations in the β-plane approximation valid for the ionospheric F region (Aburjania et al., 2003a(Aburjania et al., , 2005. The series expansion in a "small" (relative to the local geomagnetic field) non-stationary magnetic field has been applied only at the last step of the derivation of the equations. The small mechanical vertical displacement of the media is taken into account. We have shown that obtained equations can be reduced to the well-known system with Larichev-Reznik vortex solution in the equatorial region (see e.g. Aburjania et al., 2002). The excitation of planetary electromagnetic waves by different initial perturbations has been investigated numerically. Some means for the PEMW detection and data processing are discussed.

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Section: Nonlinear Equations For Pemw At Arbitrary Altitudes From D Tsupporting

confidence: 80%