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Rossby–Khantadze electromagnetic planetary vortical motions in the ionospheric E-layer

Published online by Cambridge University Press:  13 June 2011

T. D. KALADZE ,
L. V. TSAMALASHVILI  and
L. Z. KAHLON
T. D. KALADZE
Affiliation:
I. Vekua Institute of Applied Mathematics, Tbilisi State University, 2 University str., 0186 Tbilisi, Georgia ([email protected]) Physics Department, GC University, Lahore 54000, Pakistan
L. V. TSAMALASHVILI
Affiliation:
I. Vekua Institute of Applied Mathematics, Tbilisi State University, 2 University str., 0186 Tbilisi, Georgia ([email protected])
L. Z. KAHLON
Affiliation:
Physics Department, GC University, Lahore 54000, Pakistan
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Abstract

It is shown that in the earth's conductive ionospheric E-region, large-scale ultra low-frequency Rossby and Khantadze electromagnetic waves can propagate. Along with the prevalent effect of Hall conductivity for these waves, the latitudinal inhomogeneity of both the earth's angular velocity and the geomagnetic field becomes essential. Action of these effects leads to the coupled propagation of electromagnetic Rossby and Khantadze modes. Linear propagation properties of these waves are given in detail. It is shown that the waves lose the dispersing property for large values of wave numbers. Corresponding nonlinear solitary vortical structures are constructed. Conditions for such self-organization are given. It is shown that nonlinear large-scale vortices generate the stronger pulses of the geomagnetic field than the corresponding linear waves. Previous investigations are revised.

Type
Papers
Information
Journal of Plasma Physics , Volume 77 , Issue 6 , December 2011 , pp. 813 - 828
Copyright
Copyright © Cambridge University Press 2011

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