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Secondary instabilities in the dynamics of the Farley-Buneman fluctuations
Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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.
Received 23 August 2000; accepted 21 March 2001; .
Citation: (2001), Secondary instabilities in the dynamics of the Farley-Buneman fluctuations, J. Geophys. Res., 106(A8), 15,511–15,518.
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