OCS 1005 Lecture : COASTS Notes
15 Mar 2019
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The boundary between the ocean and the land: erosional coasts: dominant processes remove coastal material. They are high-energy coasts; lots of wave action due to many storms and a long fetch. Southern tips of south america and africa: examples are maine, british columbia, southern tips of south america and. Africa: they are dominated by rock, depositional coasts: steady or growing due to accumulation of sediments. Whether the coast is on an active or passive margin, the amount of wave energy, and the slope of the land: erosional coasts: refraction concentrates wave energy at headlines. Over time, erosional forces will create a smooth shoreline. Erosional coasts have lots of wave action and are dominated by rock. There is an inlet between the coastline and the island itself: these are completely dependant on the constant input of the sediments to maintain their position and their size. Jettys can affect sediment transport: without constant deposition, erosional forces move and change the islands.
