  Recent experiments have demonstrated the species dependence of the impurity
poloidal drift direction along with the magnetic island rotation in the
poloidal plane. Our resistive MHD simulations have reproduced such a dependence
of the impurity poloidal flow, which is found mainly determined by a local
plasmoid formation due to the impurity injection. The synchronized magnetic
island rotation is dominantly driven by the electromagnetic torque produced by
the impurity radiation primarily through the modification to the axisymmetric
components of current density.
