Barrier Beach


barrier beach

[′bar·ē·ər ‚bēch] (geology) A single, long, narrow ridge of sand which rises slightly above the level of high tide and lies parallel to the shore, from which it is separated by a lagoon. Also known as offshore beach.

Barrier Beach

 

a strip of alluvial land that separates a lagoon or liman from the sea. Formed by the surf and by wave action that results in longitudinal (along the shore) or transverse shifting of detritus, it is composed of sand, pebble gravel, or shell material. An example of a large barrier beach is the Arabat Tongue, which separates the Sivash Lagoon from the Sea of Azov.