Figure 10. --Smoothed time series graphs for period 1926-57. (a) Kuroshio index, (b) Westerly index 

 (c) Trade index, (d) California index, (e) Oyashio index, (f) Alaska index. 



by the Pacific Oceanographic Group, Nanaimo, 

 B.C. (1958). Values for December through 

 April during the period 1941-57 are given 

 in table 9 (page 109). 



The January values of sea temperatures 

 at the Triple Island station and pressure 

 differences at location 8 are plotted in 

 figure 11. The curves drawn through the 

 two sets of values show a remarkable simi- 

 larity for the years 1941-52 which is par- 

 tially offset by less similarity after 1952. 

 Taking the period as a whole, a statistical 

 comparison of temperature and wind index 

 values yields a correlation coefficient of 

 -0.83, indicating a tendency for tempera- 

 tures to be inversely associated with wind 



Figure 11. --Januar>' Triple Island sea surface temperatures and 

 January pressure differences at location 8, for period 1941-57 



15 



