Wave crest angle relative to bottom contours [deg]

Wave breaker angle relative to the shoreline [deg]

Geometric parameter in the expression to approximate the shoreline in the lee of

headland-type features (Equation III-2-24 III-2-24 and Figure III-2-27) [deg]

Energy flux dissipation rate [dimensionless]

Stable wave height to water depth ratio for wave re-formation

g

Shoreline diffusivity parameter (Equation III-2-26) [length2/time]

Geometric parameter in the expression to approximate the shoreline in the lee of

headland-type features (Equation III-2-24 and Figure III-2-27) [deg]

Azimuth angle of the outward normal to the shoreline (Equation III-2-17) [deg]

Breaker index *H*b/db [dimensionless]

Lateral mixing coefficient [dimensionless]

Surf similarity parameter [dimensionless]

Mass density of water (salt water = 1,025 kg/m3 or 2.0 slugs/ft3; fresh water =

1,000kg/m3 or 1.94 slugs/ft3) [force-time2/length4]

Mass density of sediment grains (2,650 kg/m3 or 5.14 slugs/ft3 for quartz-density

sand) [force-time2/length4]

Dimensionless parameters used in the GENESIS empirical predictive formula for

longshore sand transport rate (Equation III-2-42)

Coefficients in expression to approximate the shoreline in the lee of headland-type

features (Equation III-2-24)

Wave group speed at the breaker line [length/time]

Friction coefficient

Wave group speed [length/time]

Wave group speed in deep water [length/time]

Wave group speed at the breaker line [length/time]

Water depth in the surf zone, including wave-induced setup [length]

Water depth at the breaker line [length]

Berm crest elevation or beach berm height above still-water [length]

Depth of appreciable sand transport as measured from still-water level [length]

III-2-110

Longshore Sediment Transport

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