Polar surges and macrospicules II. Dynamics of an eruptive event from off-limb observations

We continue our study of polar surges and macrospicules at the period of so lar minimum, analyzing high resolution multiwavelength limb observations th at provide a clearer picture of the dynamical phenomena occurring well abov e the chromosphere of a polar sap. The time sequence of an erupting and imp ulsive polar event is examined from the low chromosphere to coronal heights , deriving both proper motions and Doppler velocities. Our observations sug gest that there is a close association of polar surges with explosive event s, supporting the hypothesis that magnetic reconnection triggered by emergi ng flux provides the accelerative mechanism for this polar region event.