Three-dimensional MHD turbulence reconnection by coupling among multiple tearing layers

We investigate the reconnection acceleration during the turbulence building stage by three-dimensional (3D) MHD simulations. We found that multiple reconnection layers emerge due to the growth of 3D sheared tearing instability. Diffusion regions on adjacent reconnection layers form an inflow-outflow coupling that enhances local reconnection. Further coupling of the existing energy modes breeds new energy modes near the current sheet edge. As reconnection layers span and interact with each other across the whole current sheet, global magnetic energy consumption accelerates. The significant contribution of 3D energy modes and their interaction to the reconnection rate enhancement seems to be independent on magnetic diffusivity.