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Working directly from the 3D magnetohydrodynamical equations and entirely inphysical scales we formulate a scenario wherein the enstrophy flux exhibitscascade-like properties. In particular we show the inertially-driven transportof current and vorticity enstrophy is from larger to smaller scale structuresand this inter-scale transfer is local and occurs at a nearly constant rate.This process is reminiscent of the direct cascades exhibited by certain idealinvariants in turbulent plasmas. Our results are consistent with the physicallyand numerically supported picture that current and vorticity concentrate onsmall-scale, coherent structures.

On the transport and concentration of enstrophy in 3D magnetohydrodynamic turbulence