ar X iv : 1 30 1 . 58 01 v 1 [ nl in . A O ] 2 4 Ja n 20 13 Avalanches , Breathers and Flow Reversal in a Continuous Lorenz - 96 Model
نویسنده
چکیده
For the discrete model suggested by Lorenz in 1996 a one-dimensional long wave approximation with nonlinear excitation and diffusion is derived. The model is energy conserving but nonHamiltonian. In a low order truncation weak external forcing of the zonal mean flow induces avalanche-like breather solutions which cause reversal of the mean flow by a wave-mean flow interaction. The mechanism is an outburst-recharge process similar to avalanches in a sand pile model.
منابع مشابه
Avalanches, breathers, and flow reversal in a continuous Lorenz-96 model.
For the discrete model suggested by Lorenz in 1996, a one-dimensional long-wave approximation with nonlinear excitation and diffusion is derived. The model is energy conserving but non-Hamiltonian. In a low-order truncation, weak external forcing of the zonal mean flow induces avalanchelike breather solutions which cause reversal of the mean flow by a wave-mean flow interaction. The mechanism i...
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تاریخ انتشار 2014