350000 



300000 



250000 



«9 



* 200000 



E 



« 



150000 



g 100000 



< 



50000 



-50000 



Date 



-♦—1975 



1982 



-•—1989 

 -X— 1996 



-■—1976 



1983 



-:— 1990 

 ■^1^1997 



1977 



1984 



■1991 



■1998 



■^<— 1978 



1985 



- 1992 



■^— 1999 



■1979 



1986 



1993 



■2000 



-1980 



1987 



1994 



-2001 



-H— 1981 i 



1988 

 - 1995 

 ■^—Average 



Figure 1. LAKI Area Compilation (1975-2001) 



Figure 2 shows the NSSI for all years from 1975 to 2001. The noticeable severe years by the NSSI were 

 the years 1984. 1991 and 1993 with NSSI values of 5.72. 5.77 and 5.48. respectively. The least severe 

 year was 1999 with an NSSI rating of 0.03. When compared to the previously used mdex of season 

 severity, icebergs south of 48°N, the three most severe years of the study period were 1984. 1991. and 

 1994 with iceberg populations of 2202. 1974 and 1765 respectively. The lightest years were 1977. 1980 

 and 1999 with 22, 24 and 22 icebergs, respectively. 



Figure 2. Normalized Season Severity Index { 1975-2001 ) 



58 



