tected by reconnaissance other than MP's. Of the 

 icebergs that were resighted as they made the 

 journey to the LAKI, IIP, GPCD, and ships found 

 the majority of them. The size distribution of the 

 limit-setting icebergs, as reported by the final sight- 

 ing source, is displayed in Table 3. Almost half of 

 the sightings were reported as "general sized ice- 



Table 3 

 Deletion Method of LAKI Icebergs 



bergs", which is the unspecified size assigned to 

 icebergs detected by IIP radar surveillance. 



As tool for maintenance of the LAKI, the 

 study shows that HP's melt model is very impor- 

 tant. From Table 4, 79% of the limit-setters were 

 deleted after reaching 150% melt. Non-detec- 

 tion of icebergs during reconnaissance patrols ac- 

 counted for 21% of the deletions of the icebergs 

 that comprised the LAKI. 



Table 4 

 Size Distribution of LAKI Icebergs 



Conclusion 



The results from this work have yielded a 

 better understanding of the contributing surveil- 

 lance sources and the final fates of the limit-set- 

 ting icebergs. In the 1995 Season, 3180 icebergs 

 were entered in the IIP iceberg drift model, of which 

 144 made it through the IIP operations area to set 

 the LAKI. If the 1995 Season can be considered 

 typical, then the great majority of icebergs (95%), 

 which pass south of 52°N latitude, melt before they 

 approach near the LAKI. 



A significant finding of this study is that ap- 

 proximately half of the limit-setting icebergs were 

 undetected before being found near the LAKI by 

 the various surveillance sources, primarily IIP re- 

 connaissance. For this to happen, the icebergs 

 had to either make it through the gauntlet of re- 

 connaissance undetected or be created in the re- 

 gion near the LAKI. If the latter is considered, it 

 implies that the splitting of icebergs into two or 

 more "pieces" as they journey south, and espe- 

 cially in the vicinity of the LAKI, is an important 

 process of their melt. Both deductions exceed the 

 scope of this study, however, are ripe for further 

 investigation. But, regardless of how they get 

 there, the fact that these icebergs are found at the 

 LAKI gives impetus to IIP reconnaissance in this 

 region. 



47 



