  The vertical flow structure in the galactic center region remains poorly
understood. We analyzed the MHD simulation data by Suzuki et al. (2015) for
better understanding. As a result, we found the fast downflows with a speed of
~100 km/s near the foot-points of magnetic loops. These downflows are flowing
along a magnetic field line and accelerated by the gravity. The direction of
the fast flows is changed by the magnetic loop geometry, as it moves. As a
result, not only vertical motions but also azimuthal and radial motions are
excited. This feature could be relevant to the observed high velocity
dispersion in the position-velocity diagram.
