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On beaches where longshore drift threatens the erosion of beach material, smaller structures on the beach may be installed, usually perpendicular to the water's edge. Their action on waves and current is intended to slow the longshore drift and discourage mobilisation of beach material. In this usage they are more usually referred to as groynes.
North Jetty on the left and South Jetty on the right at the mouth of Sebastian Inlet in Florida from the Indian River to the Atlantic Ocean.. Jetties have been constructed on each side of the outlet river of some of the rivers flowing into the Baltic, with the objective of prolonging the scour of the river and protecting the channel from being shoaled by the littoral drift along the shore.
The response of a sand beach was measured for various water levels and wave heights, both with and without an upper cobble berm. During the experiment, the dynamic revetment demonstrated dynamic stability, as the individual cobbles within the structure moved with every wave but the global shape of the revetment remained stable.
The Santa Cruz Wharf is seen on Dec. 24, 2024 after a section fell into the ocean during high surf in Santa Cruz, Calif. (Photo by Stephen Lam/ San Francisco Chronicle via Getty Images)
Oakland Long Wharf, San Francisco East Bay In the San Francisco Bay Area in California , there were several moles, combined causeways and wooden piers or trestles extending from the eastern shore and utilized by various railroads, such as the Key System , Southern Pacific Railroad (two), and Western Pacific Railroad : the Alameda Mole , the ...
Traffic sign: Quayside or river bank ahead. Unprotected quayside or riverbank. A wharf commonly comprises a fixed platform, often on pilings.Commercial ports may have warehouses that serve as interim storage: where it is sufficient a single wharf with a single berth constructed along the land adjacent to the water is normally used; where there is a need for more capacity multiple wharves, or ...
A 16-foot jon boat. This is the style of boat that 2 duck hunters were using when they took on water in North Myrtle Beach, SC on the evening of January 26, 2023.
A groyne gradually creates and maintains a wide area of beach on its updrift side by trapping the sediments suspended in the ocean current. This process is called accretion of sand and gravel or beach evolution. It reduces erosion on the other, i.e. downdrift, side by reducing the speed and power of the waves striking the shore.