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

Autor:	L. V. Tsamalashvili, T. D. Kaladze, L. Z. Kahlon
Rok vydání:	2011
Předmět:	Physics Nonlinear system Earth's magnetic field Wavenumber Angular velocity Ionosphere Condensed Matter Physics Electromagnetic radiation Action (physics) Physics::Geophysics Computational physics Vortex
Zdroj:	Journal of Plasma Physics. 77:813-828
ISSN:	1469-7807 0022-3778
DOI:	10.1017/s0022377811000237
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::050d384b98e333f946d8fdb32b8e59fd https://doi.org/10.1017/s0022377811000237 Zobrazit plný text záznamu