160 



MARION EXPEDITION TO DAVIS STRAIT AND BAFFIN BAY 



path sontlieast of the Grand Bank. A ma}), such as Figure 102, show- 

 ing the conii)iled drifts of the foregoing bergs, and many more be- 

 sides furnishes the best information avaihible as to their general 

 ])aths in the currents. Its most instructive feature is its demonstra- 

 tion that the heaviest ice stream is past the Tail of the Grand Bank 

 to the vicinity of latitude 42^ 30', longitude 51' W. where the bergs 



The Drift Tracks of Icebergs. 1900 



Figure 102. — The courses that icebergs have foUowed south of Newfoundland is a 

 record compiled by the international ice patrol, as it has tracked bergs for distances 

 of 400 miles and more in the ocean currents. 



tend to tui-n nbi-nptly to the left, and thereafter follow an easterly 

 course until they perish. 



We have on the ice i)atrol also collected over a jjcriod of several 

 years the physical data needed for the dynamic computation of the 

 oceanic ciirulation in the region of the Grand I?ank in accordance 

 with Bjerkness theory of free motion. (See Smith (192(>).) Dur- 



