  Turbulence spreading from edge to core region with resonance magnetic
perturbation (RMP) is investigated using an electromagnetic Landau-fluid model
in toroidal geometry. When RMP field with appropriate amplitude are employed in
the simulation, long wavelength fluctuations around the resonance surface are
excited due to the forced magnetic reconnection. Strong shear flow at the
magnetic island separatrix are observed, and break the radial elongated vortex
structures of the turbulent fluctuation. The inward flux could be blocked by
this shear flow and the saturation level in the core region declines.

Plasma Physics