FORMATION OF SPITS AND TOMBOLOS

A Spit is a long, narrow ridge of deposited materials that extends from the mainland into the sea. An example in Brunei is Muara Spit and Kuala Tutong Spit. When the spit is connected the island to the mainland to form a feature is called the Tombolos. The long shore drift transports materials along the […]

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FORMATION OF OFFSHORE BAR

Off shore bar is a long narrow ridge of deposited materials sand can be found lying away from and parallel to a coast. When the waves approach a gently sloping coast , friction between the waves and the sea bed causes the waves to break at some distance from the coast. Over time, more materials  […]

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FORMATION OF BEACHES

Beach is a zone of materials accumulated along the coast. A beach is formed when deposited materials carried by waves are accumulated in a zone along the coast. The materials on the beach vary in size from fine sand to pebbles . The waves sort these materials according to the weight. The finer sand deposited […]

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COASTAL DEPOSITION

Deposition occur along the coast due to the Constructive waves which have a more powerful swash than backwash, more materials are deposited than eroded on such coasts. when the coasts are sheltered from prevailing winds which protected from wave erosion and deposition of materials take place. Storm also subsidies, the large amount of materials eroded […]

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COASTAL TRANSPORT

The materials that are eroded from the coast are usually transported along the coast by waves and currents before they are deposited elsewhere. The Longshore  Drift When waves approach a coast at an  angle, the swash brings the sediment up onto the coast at the same angle. Due to friction and the pull of gravity, […]

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Factors affecting the rate of Erosion

The type of wave Destructive waves cause more erosion than constructive waves. Backwash is more powerful than swash. More materials are carried away from the coast than are deposited on it. Position of coast Coast are not protected from prevailing winds are more exposed to wave action than sheltered coast area Natural of coastal rock […]

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