Volume 106, Number 2, April 2014
|Number of page(s)||5|
|Section||Geophysics, Astronomy and Astrophysics|
|Published online||17 April 2014|
Shear flow driven Rossby-Khantadze electromagnetic planetary vortices in the ionospheric E-layer
1 Physics Department, GC University - Lahore, Pakistan
2 I. Vekua Institute of Applied Mathematics, Tbilisi State University - Tbilisi, Georgia
3 Institute for Fusion Studies and Applied Research Laboratory, University of Texas - Austin, TX, USA
4 Institute of Physics of the Earth - Moscow, Russia
Received: 7 February 2014
Accepted: 28 March 2014
A system of equations describing the nonlinear interaction of coupled Rossby-Khantadze electromagnetic waves with a sheared zonal flow in the Earth's ionospheric E-layer is obtained. For the linear regime the corresponding region of phase velocities is analyzed and the appropriate stability condition of zonal flow is deduced. It is shown that the sheared zonal flow may excite solitary vortical structures in the form of a row of counter-rotating vortices whose amplitudes decrease with the increase of the zonal flow parameter. This conclusion is consistent with the stabilizing idea of a sheared zonal flow. The possibility of an intense magnetic-field generation is shown.
PACS: 92.10.hf – Planetary waves, Rossby waves / 96.25.Jz – Ionospheres
© EPLA, 2014
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