Behavior of the fast earthward flow near the braking region in the magnetotail during a substorm is investigated using the Hall MHD simulation. The results indicate that the high-speed earthward plasma flow is associated with fast reconnection in the middle tail. The fast flow is mainly confined in the range -1.5R(E) < z < 1.5R(E). In the region of -15R(E) < x < -9R(E), due to intermittent magnetic reconnection, the earthward flow exhibits a fluctuating property, i. e., the flow is localized in space and is bursty in time. The pile-up of the magnetic flux and plasma in the near-Earth region le...
