Radial drift and vertical mixing timescales in a disk with a different disk turbulence. Blue and orange solid lines are radial drift timescales of 0.087 µm and 1730 dust, respectively. The colored dotted lines are St of 0.087 and 1730 µm dust in the midplane, following the axis on the right. St of the 1730 µm dust is larger than 0.087 µm dust, so 0.087 µm dust radially drift faster than 1730 µm dust. The dashed line is the vertical mixing for a turbulent disk with α = 10^–2. The dash-dotted line is for α = 10^–3, and the dotted line is for a quiescent disk of α = 10^–4.