110 



WIND. 



The resultant, velocity and direction for the year 1903 recorded at Hut Point were 6'7 

 miles per hour and N. 80 E. respectively. Thus the resultant direction was 23° more to the 

 north at Hut Point than at Cape Evans. As the places ai'e so near together this can be 

 only the result of local deflections of the wind. We must therefore discuss the effect of the 

 land masses which influence the direction of the x^-ind in the McMurdo Sound region. 



Fig. .37. Wind directions. 



The general distribution of land can be seen on figure 37. The great mass of Ross Island is 

 separated from the Western Plateau by the McMurdo Sound. Erebus is 13,000 feet high and 

 its summit is only 12 miles from Cape Evans and between 40 and 50 miles from the table- 

 land 9,000 feet high just across the Sound. It is quite clear therefore that these two masses 

 which rise well above the lower mnds must affect the flow of air in their neighbourhood. 



