Jtn Wu 
Average Wave Length, A (cm) 
2 
L 
Mean Square Slope, s 
O.8F 1 2 4 6 8 10 20 
Wind Velocity, U, (m/sec ) 
FIGURE 19 - LABORATORY MEASUREMENTS OF DOMINANT-WAVE LENGTH AND MEAN 
SQUARE SURFACE SLPOE. Stages of wave growth with wind velocity: 
(A) Capillary waves; (B) Rhombic, short gravity waves; (C) Gravity waves 
with parasitic capillaries; (D) Breaking gravity waves. 
1478 
