Velocity maps based on the cloud model illustrating the Doppler characteristics of the filament eruption (blue colors toward the Earth). Shortly after the filament disruption, which happens at around 05:38 UT, a large amount of the filament material is launched with velocities of about −100 km s⁻¹ (blueshifted). Redshifted structures corresponding to the material moving in opposite direction are also observed close to the footpoints of the erupting filament. This suggests that downflows are driven during the eruption and could be related to the mass loss (see the text). In the latter phase of the eruption, blob-like structures traveling with velocities exceeding −250 km s⁻¹ also can be identified. An animation of this figure is available online.