Coastal Processes Coasts are shaped by the sea and the action of waves. Waves act in different ways‚ through the processes of erosion‚ transportation and deposition. Coasts: A coast is found where the land meets the sea. Coasts undergo change due to coastal processes and (as with rivers) there are main processes at work: Erosion Transportation Deposition Each of these processes involves the power of the sea and the effect of waves that are carried to shore. However other factors also
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TYPE OF EROSION CONTROL PROS OF USING THIS CONTROL CONS OF USING THIS CONTROL Jetties - Designed to coastal properties. -“The increased wave energy and the sediment trapped behind the seawall often decrease the sediment supply near the seawall‚ causing erosion on adjacent beaches. Therefore‚ alternatives to these hard structures are strongly encouraged and actively sought by the NPS.” Breakwaters -“Dunes not directly disturbed‚ increases area of dry upper beach‚ may allow new fore dunes to stabilize
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controlled by nature but managed by humans. Coasts are controlled by nature but managed by humans. Erosion and built up are the natural processes involved in controlling the coast. Due to human activities the natural processes are interrupted because humans have specific desires to use the coast in a certain way and try to manage it. Erosion occurs depending on the strength of the rock and wave. Waves carry sand‚ rocks‚ shells‚ seaweed and other materials on and off the beach. The hard and soft rocks allow
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Coastal Erosion‚ Coastal Transportation and Coastal Deposition. The elements that interact to produce natural processes are wind‚ waves and tides. Each phenomenon at Muriwai’s coastal geographic environment has been produced by interaction. Coastal Erosion is a process at Muriwai that gradually wears away the rock particles of the earth’s surface‚ transporting them to another location. There are many types of processes that cause erosion at Muriwai such as wave erosion‚ wind erosion
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over. They are constructive. * The process by which the direction of a wave is changed when it moves in to shallower water. * The energy of water impacting on a cracks and joint. Air is compressed into the space‚ leading to erosion. * When particles of sand or rock further abrade the rock surface. * When the waves wear away at the base of a cliff‚ often forming a notch. * The wearing a way of rocks after they have been removed from the cliff face. * The distance a wave travels
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unconsolidated sediments. Although water is a much more powerful eroding force than wind‚ aeolian processes are important in arid environments such as deserts. * Aeolian landform formed by materials by wind. By the Process of Erosion and Deposotion * Aeolian landform deposits particles of Sediment‚ Sand‚ Silt and Clay * Landforms are the surface types of the earth they are categorized by Natural‚ Physical and Human activities. * They are created by the actions of various forces of nature such as wind
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diverse natural environments. The large amount of sand scheduled to be pumped onto New Jersey beaches in the future represents an invaluable resource‚ but the full potential of nourishment will not be realized without addressing habitat improvement and nature-based tourism in addition to the goals of protection from erosion and flooding and provision of recreation space. A dune is another valuable natural resource that is often overlooked. Dunes provide protection from flooding and
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were dissolved and oxidized due to sea level drop and sub aerial exposure‚ creating an unconformable surface (unconformity). The seabed rose slowly somewhere around 225 million years ago‚ causing streams to enter shallow waters‚ depositing mud and sand. This later became shale and marine sandstones of the Triassic
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cliff * Dune- a hill or ridge of wind deposited sand 7.3 outline * Wind Erosion: wind erodes land surfaces in two ways: deflation and abrasion. * Wind Deposits: The wind can create landforms when it deposits its sediments‚ especially in deserts and along coasts. Both layers of loess and sand dunes are landscape features deposited by wind. -Loess -Sand Dunes: Wind can deposit sand in mounds or ridges called dunes when it encounters an obstruction. * Types of Sand dunes: The shape
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1.0 Introduction Last term the Biology and Geography class went to Hastings Point‚ New South Wales to visit three ecosystems found in the area‚ such as- mangroves‚ sand dunes and rocky shores. Hasting Points is the smallest coastal settlement of Tweed Shire. The hamlet is nestled between the ocean on its east and a delicate estuary on its west. This report will focus on the unique coastal habitats of Hasting Points and the various issues that challenge the sustainability of mangroves surrounding
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