Secondary instabilities in the dynamics of the Farley-Buneman fluctuations

Details Secondary instabilities in the dynamics of the Farley-Buneman fluctuations Secondary instabilities in the dynamics of the Farley-Buneman fluctuations

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001jgr...10615511s&link_type=abstract

Journal of Geophysical Research, Volume 106, Issue A8, p. 15511-15518

Physics

Plasma Physics

1

Ionosphere: Auroral Ionosphere, Ionosphere: Ionospheric Irregularities, Ionosphere: Plasma Waves And Instabilities, Space Plasma Physics: Waves And Instabilities

Scientific paper

Nonlinear dynamics of the Farley-Buneman modes is investigated. It is shown that in the nonlinear regime, there exists a secondary nonlinear instability leading to excitation of low-frequency, long-wavelength modes that corresponds to the inverse energy cascade toward the longer wavelengths. The growth rate of the secondary instability is proportional to the squared amplitude of primary electron density fluctuations.

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