Figure A-1. — Map of Antarctica. 



The Commonwealth Bay area is believed to be the windiest 

 region in the world. The average wind speed for 22 consecutive 

 months during 1911-14 was found to be 43 m.p.h. During July, 

 1913, a gale of 96 m.p.h. was experienced, during which an average 

 speed of 89 m.p.h. was maintained for 12 hours. The mean speed 

 for July was 55.6 m.p.h. During the month of August, 1913, an 

 average speed of 80.6 m.p.h. was recorded during one 24-hour 

 period, with gusts momentarily reaching over 100 m.p.h. The 

 calmest month was February, 1912, with an average speed of 

 26.2 m.p.h. 



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