b. The area around the predicted posi- 

 tion of the iceberg has been thor- 

 oughly searched either through vi- 

 sual or double radar coverage. 



Discussion 



During the 1995 season, 144 icebergs 

 determined the LAKI. Table 1 , lists the sources of 

 the limit-setting icebergs when they were initially 

 sighted, or first entered into the iceberg drift model, 

 and when they were last sighted in the area of the 

 LAKI. The table shows that IIP reconnaissance 

 was the primary contributor of icebergs that even- 

 tually established the LAKI and the major sighting 

 source of the icebergs prior to their melting com- 

 pletely and ceasing to exist. 



Table 1 

 Sources of LAKI Icebergs 



Locations of the initial sightings of the even- 

 tual limit-setting icebergs by sighting source are 

 shown in the chart series 1A-1E. From these 

 charts, an appreciation of the operational meth- 

 ods of each iceberg sighting source can be dis- 

 cerned. IIP reconnaissance effort was concen- 

 trated on the southern LAKI. Other air reconnais- 

 sance, which consisted of Provincial Airlines LTD 

 (GPCD) flights in 1 995, was accomplished in con- 

 junction with fisheries patrols and focused on the 

 slope of the Grand Banks. Canadian AES (GCFR) 



conducted iceberg surveillance as a secondary 

 function to its sea ice reconnaissance, and the 

 sightings were associated with the sea ice edge. 

 BAPS sightings are icebergs that are handed off 

 by the AES iceberg model to the IIP iceberg drift 

 model at 52°N latitude. Ships sighted and reported 

 icebergs at the southern LAKI where they are car- 

 ried by the currents across the great circle ship- 



Table 2 



Initial Iceberg Sighting Sources With 



Respect to LAKI Region 



ping lanes between North America and Europe. 

 Five of these iceberg sightings were actually out- 

 side the LAKI and prompted the issuance of safety 

 broadcasts of revised limits. 



Table 2, shows the initial sighting sources 

 for the three categories of icebergs: western, 

 southern, and eastern limit-setters. Examination 

 of the numbers reveals that IIP provided over half 

 of the sightings for the western and southern 

 LAKIs. Ship reported LAKI icebergs were mostly 

 near the southern LAKI. And, iceberg reports 

 supplied by GPCD and BAPS were the important 

 initial sources for icebergs that comprised the east- 

 ern LAKI. 



Analysis of the data indicates that approxi- 

 mately half of the icebergs at the LAKI made it 

 through MP's operations area, from 52°N to the 

 waters south and east of the Grand Banks, unde- 



46 



