Аннотация:Hα spectra and filtergrams of the eruptive prominence observed with a high temporal resolution on September 18, 1995 were analysed to reconstruct motions and structures. A numerical code for the interpretation of patterns in solar spectra inclined due to rotation was developed. A special attention was payed to particularities in the spectrum before and during the active phase of the prominence when a slow rotation on the spatial scale of more than 50 000 km started. The linear velocities measured during this large scale rotation reached values of the order about 50 km/s. Then, during this slow rotation, instabilities in the plasma began and resulted in a very dynamic restructuralisation and disappearance of the prominence.
Bibliographic Code: 1999ASSL..239..239K