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# coastal studies

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### coastal studies

1. 1. COAST
2. 2. This is a picture of coast. Interpret the picture, then try to define coast Coast is an area lyingbetween the land and the sea.
3. 3. Profile of a coast
4. 4. FORESHOREOFFSHORE BACKSHORE shore can be divided into three sections
5. 5. • The submerged zoneOFFSHORE below the low tide shoreline • Between the low tideFORESHORE and high tide shorelines • Stretches landward fromBACKSHORE the high tide shoreline to the highest water line
6. 6. If you realize the Actually there coast is always are 3 main agents changing. How do you that cause the think its changing? coast to change its shape WAVE WIND SEACURRENT
7. 7. Between the 3 agents, which one you think is the most important agent which change the shape of the coastline?WINDS NO WINDS, NO WAVES & SEA CURRENTS
8. 8. WAVE TERMINOLOGY the highest part of a wave distance between two consecutive crests or two consecutive troughsvertical distance between the crest and the trough the lowest part of a wave
9. 9. Yes IDo you know know, waves get how waves its energy from get its winds as well as energy? fetch Let me think first, I think I know
10. 10. TheSpeed of distance ofthe winds the fetch Waves Energy
11. 11. The greater the wind speed, the higher the wave. Thus, thehigher the wave, the greater the wave energy.
12. 12. Fetch refers to the distance of open waterover which the wind blows.The longer the fetch, thegreater the waves energy
13. 13. There are TWO movement of the waves SWASH carries sediment from the ocean and deposits it on the shore, thus building up a beach. BACKWASH transports the sediment down a beach.