THE EVOLUTION OF THE FILAMENT IF THE REGION AR2522 AND THE ERUPTION OF THE FLARE

With observational data in several bands in region AR2522, the relationshipbetween the evolution of the filament and the eruption of 1B/M4 two-ribbon flareis analysed. It is shown that: (1) the shearing movement of the filament footpointleads to the increase of the current intensity and the stored energy for the flareeruption; (2) the ascending motion and twisting of the filament are the results ofthe increasing current intensity and the stored energy of the flare, (3 ) Martens Kuin model is applicable to illustrate eruptive phenomena of the two-ribbon flarerelated to the filament with rapid motion.