118 



UNDISTURBED 



1.9 20 M 10 IS «0 49 SO 59 «lO 69 TO 7.5 aO 89 ».0 9.9 

 WIND SPEED (m/MC) 



— UNDISTURBED 

 -• DISTURBED 



1.9 2.0 25 10 U 



a 40 49 10 95 60 69 TO 79 8.0 89 90 95 lOo" 



WIND SPEED (m/i«c) 



