Wavelet transform coefficients of the velocity plane in the solar neighbourhood showing the substructures at different scales. Top panel: scales of around 8 km s^-1. The green and orange symbols mark peaks that are > 3σ and 2 −3σ significant, respectively, for DR2 (crosses) or for the RAVE sample (squares) from the study of (Antoja et al. 2012; their table 2). Bottom panel: scales of around 2 km s^-1. The green crosses mark peaks that are >3σ significant. The red circles mark peaks for the velocity positions of nearby open clusters that are located at distances closer than 200 pc (see text). This panel shows a zoom-in on the central parts of the velocity plane.