Development and flare activity in the large sunspot group in July 1982

A large sunspot group in BBR 18474 (July 1982) was studied at the East limb. It consisted of some independently developing fragments in the common penumbra. The regions of emergence of new bipolar systems drifted Westward. f-spots of these systems appeared when p-spots began to decay. Flares occurred in the regions of new bipolar systems. The zone of flare appearance expanded from the center regions of the group to its borders in accordance with the drift of the region of sunspots emergence. The development of the new bipolar systems near the line of polarity reversal was usually associated with two-ribbon flares. The flares far from the line are small in size. The most intensive dots of the flares are situated at the boundaries of the kinematical elements of the group. (author)