Articles | Volume 28, issue 7
Ann. Geophys., 28, 1387–1399, 2010
https://doi.org/10.5194/angeo-28-1387-2010
Ann. Geophys., 28, 1387–1399, 2010
https://doi.org/10.5194/angeo-28-1387-2010

  01 Jul 2010

01 Jul 2010

Electromagnetic oscillations of the Earth's upper atmosphere (review)

A. G. Khantadze1, G. V. Jandieri2,3, A. Ishimaru4, T. D. Kaladze5, and Zh. M. Diasamidze2 A. G. Khantadze et al.
  • 1Metrology and Hydrology Department, Tbilisi State University, Chavchavadze Avenue, 1, 0128, Tbilisi, Georgia
  • 2Physics Department, Georgian Technical University, Kostava Street, 77, 0175, Tbilisi, Georgia
  • 3Institute of Cybernetics, S. Euli street, 5, 0186, Tbilisi, Georgia
  • 4Department of Electrical Engineering, University of Washington, FT-10 Seattle, Washington 98195, USA
  • 5I. Vekua Institute of Applied Mathematics, Tbilisi State University, 2 University str., 0186 Tbilisi, Georgia

Abstract. A complete theory of low-frequency MHD oscillations of the Earth's weakly ionized ionosphere is formulated. Peculiarities of excitation and propagation of electromagnetic acoustic-gravity, MHD and planetary waves are considered in the Earth's ionosphere. The general dispersion equation is derived for the magneto-acoustic, magneto-gravity and electromagnetic planetary waves in the ionospheric E- and F-regions. The action of the geomagnetic field on the propagation of acoustic-gravity waves is elucidated. The nature of the existence of the comparatively new large-scale electromagnetic planetary branches is emphasized.