Coastal Processes. Coastlines. Affected by: Waves and Tides Gradual changes in sea level Biological Processes Tectonic Activity Shoreline: Point where ocean meets the land Coast: Larger zone affected by the processes listed above. . What is a Coast?.
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A coast is an area near the shoreline that may include marshes, sand dunes, cliffs, and sandbars.
The shape of a coast depends on uplift and subsidence (sinking) of the land, wearing down of the land by erosion, and redistribution of sediment by transport and deposition.
Deposition or building of coasts is dominant.
Example: Sandy shores of New Jersey and Florida. Deposition of new sediments outpaces erosion.