CAOSP abstracts, Volume: 29, No.: 2, year: 1999

Abstract: The heliographic longitudinal distribution of the daily soft X-ray flare index (FI) values is given for 1981 and 1982 years (Table 1). The days, when FI exceeds the value 500 (300) are indicators of extremely large LDE activity and they are as follows: 1979 - 3 (6) days; 1980 - 3 (12); 1981 - 6 (16) and maximum in 1982 - 8 (16) days. The FI was determined from the daily continuous SMS-GOES profile of the solar soft X-ray flux (0.1-0.8 nm), as published in SGD. The left (right) columns of Table 1 comprise the 1981 (1982) daily data. The Eastern (E), Central (C) and Western (W) distribution of the LDE--type FIs, as well as a daily FI computed from the impulsive (I)-type flares, were so far published from 1969 to 1982.

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