EM 1110-2-1100 (Part II)
31 July 2003
H1/10
Average of the highest 1/10 wave heights [length]
H1/3
Significant wave height [length]
Hb
Wave height at incipient breaking [length]
Hm0,b
Zero-moment wave height at breaking (Equation II-4-10) [length]
Hmax
Maximum wave height (Equation II-4-17) [length]
Hrms
Root-mean-square of all measured wave heights [length]
Hrms,b
Root-mean-square wave height at breaking (Equation II-4-9) [length]
H!0
Equivalent unrefracted deepwater wave height [length]
Kr
Refraction coefficient [dimensionless]
L
Wave length [length]
Cross-shore and longshore components of lateral mixing [length/time2]
Lx , Ly
n
Ratio of wave group speed and phase speed
-O
The subscript 0 denotes deepwater conditions
Qb
Percentage of waves breaking (Equation II-4-17)
R
Wave runup above the mean water level [length]
&
R
Mean runup [length]
R1/10
Average of the highest 1/10 of the runups [length]
R1/3
Average of the highest 1/3 of the runups [length]
R2%
Runup exceeded by 2 percent of the runup crests [length]
Cross-shore and longshore components of wave forcing [length/time2]
Rbx , Rby
Rmax
Maximum wave runup [length]
Cross-shore and longshore components of wind forcing [length/time2]
Rsx , Rsy
Sxx
Cross-shore component of the cross-shore directed radiation stress [force/length]
Sxy
Radiation stress component [force/length]
T
Wave period [time]
u
Total current in the surf zone (Equation II-4-30) [length/time]
U
Time- and depth-averaged cross-shore current [length/time]
ua
Wind-driven current [length/time]
ui
Oscillatory flow due to infragravity waves [length/time]
uo
Oscillatory flow due to wind waves [length/time]
II-4-38
Surf Zone Hydrodynamics
Previous Page
