Wave dominated deltas Wave activity smooths out delta outline by transporting sediment away from delta mouth pushing sediment back onshore e.g. Unalakleet river delta 3. Ocean waves periodic oscillation of water set up by winds size of wave depends upon wind speed, the amount of time the wind has blown and the distance the wind has travelled without interruption. The more agitated the water, the more power the water has to erode. Tides Rise and fall of the ocean level due to interaction of earth, moon and sun gravitational forces. C. Types of coastlines 1.
Tidal flats form in areas of low wave energy and medium to high tidal range.
Turnagain Arm 4.