EQUILIBRIUM BEACH PROFILE A is the profile scale factor, much more detail in later chapters.

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Presentation transcript:

EQUILIBRIUM BEACH PROFILE A is the profile scale factor, much more detail in later chapters

EQUILIBRIUM BEACH PROFILE Steeper than equilibrium Excess sediment on profile. Sediment needs to be transported offshore to re-attain equilibrium

Flatter than equilibrium Shortage of sediment on profile. Sediment needs to be transported onshore to re-attain equilibrium EQUILIBRIUM BEACH PROFILE

SHORLINE OF SUBMERGENCE Energy eventually distributed over a wider surf zone and planform irregularities get smoothed out. Coastal Processes with Engineering Applications (Dean and Dalrymple)

SPITS Coastal Processes with Engineering Applications (Dean and Dalrymple)

SPITS HOME FOR SALE

SPITS – BAYMOUTH BARRIER

TOMBOLO Don’t stare too hard

INLETS Coastal Processes with Engineering Applications (Dean and Dalrymple) Often see build up of sediment on updrift side of inlet, especially if it is jettied. Can get overlapping of downdrift barrier especially when no jetties exist.

BARRIER ISLAND St. Augustine Inlet, FL, 1960 St. Augustine Inlet, FL, 1942

BARRIER ISLAND North Bunces Key, FL Assisted by vegetation trapping of sand Outer Banks, NC www3.csc.noaa.gov Dauphin Island, AL. What assists Island maintenance here?