1998A&AS..128....1M

Result. are presented of the analysis of H₂O maser spectra in ON2, obtained with the RT-22 radio telescope at Pushchino during 1981-1996. The spectral features are analyzed and their time evolution examined. Anticorrelation between the fluxes of features with close radial velocities is found. A systematic displacement of the drifts sum of all features from 0.8 to -0.3km/s/yr during 1981-1988 and 1990-1996 is observed. In 1989 a fast jump of this parameter from -0.3 to 0.8km/s/yr took place. The quadratic sum of the drifts of the features always increased during a rise in maser activity. Possible causes of the observed phenomena are discussed.