Numerical simulations of Alfv\'enic turbulence in extended reduced MHD

We present the results of numerical investigation of anisotropic Shear-Alfven turbulence in the framework of extended reduced MHD model. The turbulence is randomly stirred at large scales until it reaches a steady state. By properly choosing the forcing parameters we investigate both weak and strong turbulence, and address the question of its transition to the Kinetic-Alfven regime at the ion-sound-radius scale. We observe that the energy spectrum in the weak turbulence regime is flatter than $k^{-2}$ predicted by weak turbulence models.