Animation sequence of the TiO images (top left), Hα–4 Å raster images (bottom left), and the Ti II and Hα vertical velocity maps (top and bottom right, respectively). The contours on the Hα–4 Å raster images and the vertical velocity maps indicate the granules obtained from the TiO images. The animation shows the time series of event 1, including the collapse of the granule and the wave excitation. The animation is available online.