the Grand Banks in late June under slightly favorable winds for a 

 traveltime of 3/2 months. With neutral wind drift conditions, it is 

 concluded that the traveltime from Hudson Strait entrance to the 

 Grand Banks is 4 months. However, normal wind conditions along 

 the coast of Labrador from November through March are favorable 

 for berg drift toward the Grand Banks. Under normal conditions 

 therefore, it is concluded that the average berg traveltime from 

 Hudson Strait entrance to the Grand Banks is 3 months during the 

 winter. With very favorable wind conditions, the traveltime can 

 probably be reduced to less than 2^ months. With very unfavorable 

 wind conditions, traveltime can probably be increased to 6 months. 



4. The average drift rate for the 1962 berg crop from early No- 

 vember at Hudson Strait entrance to March on the Grand Banks 

 was 7.5 miles per day under neutral winds. The average drift rate 

 for the 1963 crop is ambiguous for the same reason stated above. 

 However, bergs near Hudson Strait entrance in mid-January 1963 

 drifted at an average rate of 7.6 miles per day to just north of Hamilton 

 Inlet by mid-March under slightly favorable winds. During the 

 last half of March and early April, these bergs drifted at a rate of 

 18 miles per day to the Grand Banks under very favorable winds for 

 an overall average of 9.0 miles per day from Hudson Strait entrance 

 to the Grand Banks. Drift rates for bergs north of Cape Dyer in 

 early November were estimated to be 5.1 miles per day in 1962 and 

 5.8 miles per day in 1963, with unfavorable winds both years. Drift 

 rates for other groups were also determined in 1963, varying from 7.3 

 to 9.0 miles per day along the Labrador coast toward the Grand 

 Banks. Although variations in average drift rates are subject to 

 other factors besides wind conditions such as bottom topography, 

 sea ice conditions, and variations in the speed and extent of the 

 transporting agency, the establishment of average berg crop drift 

 rates for various monthly wind conditions will permit an educated 

 estimate of the progress of the berg crop toward the Grand Banks 

 each year. Normal average winds off the Labrador and northeast 

 Newfoundland coasts are northwesterly during the winter and spring 

 months. Thus it is believed that the drift rates established during 

 the 1962 and 1963 seasons are lower than normal due to unfavorable 

 surface wind anomalies for both years. There is evidence that the 

 average berg drift rates are less along the Baffin Island coast than 

 along the Labrador coast and greater offshore of the northeast New- 

 foundland coast. 



5. Bergs north of Cape Dyer in early November were not a factor 

 in either the 1962 and 1963 Grand Banks ice seasons. Only one berg 

 north of Cape Dyer in November was estimated to drift south of 

 48° N. The estimated average drift rate for these bergs was 5.1 

 miles per day in 1962 and 5.8 miles per day in 1963. Winds averaged 

 unfavorable in 1962 and very unfavorable in 1963. It must be con- 



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