Noun
English Wikipedia has an article on:longshore driftWikipedia
longshore drift
The process whereby sand and shingle move along a beach shoreline when waves approach the shore at an angle.
Breakwaters on either side of the Seaway prevent longshore drift and the bar from silting up. Source: Internet
Sediment is transported along the coast in the direction of the prevailing current ( longshore drift ). Source: Internet
These banks may slowly migrate along the coast in the direction of the longshore drift, alternately protecting and exposing parts of the coastline. Source: Internet
The Sussex coast has always suffered from occasional violent storms; with the additional hazard of longshore drift (the eastward movement of shingle along the coast), the coastline has been frequently changing. Source: Internet