Long-time numerical solutions of a low-dimensional model of the reduced MHD equations show that, when this system is driven quasistatically, the response is punctuated by impulsive events. The statistics of these events indicate a Poisson process; the frequency of these events scales as Δ${\mathit{E}}_{\mathit{M}}^{\mathrm{-}1}$, where Δ${\mathit{E}}_{\mathit{M}}$ is the energy released in one event.

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