  Two-dimensional magnetohydrodynamics (2D MHD), forced at (a) large length
scales or (b) small length scales, displays turbulent, but statistically
steady, states with widely different statistical properties. We present a
systematic, comparative study of these two cases (a) and (b) by using direct
numerical simulations (DNSs). We find that, in case (a), there is energy
equipartition between the magnetic and velocity fields, whereas, in case (b),
such equipartition does not exist. By computing various probability
distribution functions (PDFs), we show that case (a) displays extreme events
that are much less common in case (b).
