Self-organization of planetary electromagnetic waves in the E-region of the ionosphere

摘要: Abstract A physical mechanism for the generation of slow and fast electromagnetic-type planetary waves due to standing factor—latitude variation geomagnetic field—in dissipative E-region ionosphere is suggested. It has been shown that are generated dynamo-field in ionosphere, by vortical electric field. The electromagnetic wave analog Rossby wave; a new mode natural oscillations ionosphere. Linear propagate along parallel west east directions dynamo-region against background mean zonal flow. Phase velocity few km s −1 , oscillation frequencies frequency band 10−2– 10 −4 wavelength order 3 higher. velocities local winds at same magnitude, 10−4– −5 higher order. Fast generate intense magnetic fields hundred nanotesla (nT); waves—a tens nT. In this paper nonlinear theory both investigated first time. was established these perturbations self-localized as solitary structures move (fast) (slow) structure consists cyclone–anticyclone-type mutual counter-clockwise-rotating vortices, which capture medium particles. Energy enstrophy large-scale vortices weakly attenuated long-lived. Vortical fields, an magnitude larger than those corresponding linear waves. Features parameters wavy theoretically good agreement with experimental data ULF observable