equilibrium beach profile
DESCRIPTION
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. EQUILIBRIUM BEACH PROFILE. - PowerPoint PPT PresentationTRANSCRIPT
EQUILIBRIUM BEACH PROFILE
3/2AxhA 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
http://collections.ic.gc.ca/geoscience/images/detail/A94S0061.jpg
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
www.uflib.ufl.edu St. Augustine Inlet, FL, 1960
St. Augustine Inlet, FL, 1942
BARRIER ISLAND
North Bunces Key, FLAssisted by vegetation trapping of sand
Outer Banks, NC
www3.csc.noaa.gov
Dauphin Island, AL.What assists Island maintenance here?