English to Arabic Science Geology environment

A foredune is a dune ridge that runs parallel to the shore of an ocean, lake, bay, or estuary. Foredunes consist of sand deposited by wind on a vegetated part of the shore. Foredunes can be classified generally as incipient or established.[1]

Foredunes may begin as shadow dunes that form in the wind shadows of clumps of vegetation.[2] Several shadow dunes may eventually join to form an incipient foredune.[3] When an incipient foredune reaches a height of about 1.5 feet (0.5 m), it has a significant wind shadow of its own. Wind-blown sand will tend to fall on this incipient dune rather than traveling further inland. When a foredune becomes 3 to 5 feet (0.9 to 1.5 m) high, it may trap all of the wind-blown sand from the beach.