delayed opening 2-3 weeks this 

 year due to ice persisting longer 

 than normal in the Strait. June 

 was the heaviest iceberg month 

 with 893 icebergs plotted by IIP 

 during the month and 247 

 icebergs estimated south of 

 48°N. The largest number of 

 icebergs on plot during any single 

 day in 1985 was on 14 June 

 (Figure 28), when there were 292 

 on plot. There were 242 icebergs 

 on plot on 30 June (Figure 29) . 



July 1985: On 16 July, the 

 Strait of Belle Isle was ice-free as 

 was much of Davis Strait (Figure 

 1 9). The melt proceeded rapidly 

 and by 30 July sea ice only 

 extended as far south as Cape 

 Mugford on the Labrador Coast. 

 July also was a heavy iceberg 

 month with 765 icebergs plotted 

 during the rrxanth. However, only 

 1 23 icebergs were estimated to 

 have passed south of 48°N and 

 227 icebergs remained on plot on 

 30 July (Figure 31). 



August 1985: With warmer 

 than normal temperatures (Table 

 5) and favorable winds, the sea 

 ice continued to melt rapidly and 

 the iceberg population 

 decreased dramatically. On the 6- 

 1 4 August ICERECDET 

 deployment, only 30 icebergs 

 were detected south of 50°N and 

 the eastern limits of all known ice 

 shifted 4 degrees west (Figure 

 32). On 13 August, 

 Newfoundland and Labrador 

 were nearly ice-free with some ice 

 remaining in Hudson Strait and 

 along the east coast of Baffin 

 Island (Figure 20). August was a 

 light iceberg month with only 32 



42 



icebergs south of 48''N. Asa 

 result of the final ICERECDET on 

 20-28 August, the limit of all 

 known ice shifted another 4 

 degrees west and north and the 

 1 985 Ice Patrol season was 

 cbsed on 29 August with 64 

 kiebergs on plot at IIP, only three 

 of which were south of 48°N 

 (Figure 33). 



Septeniber1985: Labrador 

 and the Davis Strait was entirely 

 sea ice free by 1 7 September 

 (Figure 21). There were an 

 additional 32 icebergs sighted 

 south of 48°N during September. 



Table 6. 



Explanation of Sea Ice 

 Technology Used in 

 Figures 10-21 



C - Total loe oonosntratlon In the area In tenths. 



C C C - Conoentratlon of thickest ( C ), 2nd thickest (C ). and 3rd thickest (C ). 

 a b c a b c 



S S^S - Stage of development of thk:kest (S ). 2nd thickest (S ), and 3rd thickest (S ). 

 a b c a b c 



^C > Concentration of loe within areas of strips and patches. 



F F.^F - Roe size of thickest (F ). 2nd thickest ( F^ ). and 3rd thickest (F ). 

 a b c a b c 



Stage ot Development 



No stage of development 



1 New loe 



2 Nllas, Ice rind 



3 Young loe 



4 Grey loe 



5 Qrey-white Ice 



6 Rrst-year loe 



7 Thin first-year Ice 



8 Thin first-year Ice. 30-50 cm 



9 Thin first-year loe. SO-70 cm 

 1 - Medium first-year loe 



4 - Thick first-year loe 



7- Old Ice 



8 ' Second-year loe 



9 ' Multi-year Ice 



▲ Icebergs 



A traoe of Ice thicker thanS 



# Fourth type. If C C C do not add up to C 

 a b c 



Floe Sbea 



Pancake Ice 



1 Brash, small ice cake 



2 tee cake 



3 Small floe 



4 Medium tk>e 



5 Big floe 



6 Vast floe 



7 Qant floe 



8 Growlers and floebergs 



9 loetwrgs 



/ Undetermined or unknown 



