SPECIAL PUBLICATION NO. 43
Coast Gre
Neershtre sane
S defines area of neorumote currents
Coat Ueech oc shore a
Cckshore fafnw Inshore or Shore foce _Offshe or (extends through breaker toneil Beach
bluff F0ce
or
escerpMen t Berms
eech rp et rBreaker#
Ordinaryr %waw watevele
plunge pnlot
Figure 5. Beach proflle-slated terms (from U. S. Army, 1984).
In Florida, the foreshore slope is defined The slope of the foreshore tends to (Chapter 16B-33, Florida Administrative increase with an increase in the grain size of Code, State of Florida) as: the sediment ( U. S. Army, 1933; Bascom, 1951; King, 1972). Dubois (1972) found an ... that portion of the beach or coast inverse relationship between grain size and
that is, on a daily basis, subject to the foreshore slope where the foreshore combined influence of high and low sediments contain appreciable quantities of tides, and wave activity including wave heavy minerals. Sediment porosity and
uprush or backwash. For purposes of permeability effects on the foreshore are
this Chapter, it includes that part of the discussed by Savage (1958).
beach between mean higher high water (MHHW) and mean lower low water
(MULW). Generally, foreshore slope increases with an increase in nearshore wave energy (all
The slope of the foreshore, the steepest other factors held constant), and an inverse portion of the beach profile, is a useful design relationship is found when wave steepness is parameter since along with the berm elevation applied (e.g., Bascom, 1951; Rector, 1954; it determines beach width (U. S. Army, 1984, King, 1972). For instance, steeper eroding p. 4-86). As a response, element the waves such as winter waves will result in foreshore is a function of force elements such flatter foreshore slopes, while longer (less as astronomical tides, waves, currents, and steep) accretionary waves such as postproperty elements such as grain size, storm or summer waves produce steeper sediment porosity, and sediment mass slopes. Average foreshore slope statistics density. for Florida are listed in Table 3. While this treatment of foreshore slopes is general, it
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