I am writing today to discuss the issue of coastal erosion and the proposed solution of beach nourishment. Coastal erosion has several causes‚ the most prominent being the breaking of waves against the coastline. While seemingly harmless‚ over time waves break away at the shoreline‚ leading to its reduction. Beaches are the one thing that protect coastal structures from such damage. They act as a line of defense for everything they surround‚ and are necessary for communities to thrive along the coast
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erosion‚ from the sea‚ takes the sand from the sand dunes as well as the rest of the beach in a rip. The sand is then pulled out to sea where it forms a sand bar. On calmer days‚ the sand is brought back to the beach. * Storm damage can affect coastal properties. This is especially made obvious when buildings are constructed on sand dunes. When the sand is taken‚ the result on the houses is catastrophic. * Lagoons‚ which are formed where sand deposits to form a baymouth barrier at the entrance
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Coastal management involves developing strategies that are designed to protect and preserve the coastal environment. The actions of humans have altered the operation of the natural coastal processes. During our fieldwork we have learned the key issues of coastal management and their strategies and the way they address them at Cronulla Beach. The three key geographical processes that shape the coastal environment are erosion‚ transportation and deposition. The key issues relating to coastal management
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The Formation of Coastal Landforms Coastal landforms are formed in several different ways and can depend on several factors. The factors are things such as wind direction rocky type and fetch of the waves around the landform. These factors all contribute to create distinctive landforms. This essay will be identifying the ways in which these coastal landforms have been made Headlands and bays such as Beachy head on the south coast of England. Headlands and bays are often found on the same coastline
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Coastal Processes and Landforms Constructive Waves - Swell or surging waves created by distant storms (low frequency (6-8/minute); long wavelength (up to 100m); low flatter waves (<1m); low energy and stronger swash than backwash Destructive Waves - Storm or plunging waves created by local winds / storms (high frequency (10-12/minute); short wavelength (<20m); high steep wave (>1m); high energy and backwash stronger than swash Fetch - the distance over which wind has blown (i.e. distance
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operation and integration of natural processes within your chosen New Zealand geographic environment have led to the formation of one significant feature. New Zealand geographic environment – Muriwai Coastal Environment Feature – Sand dunes situated at the back of Muriwai beach Introduction Muriwai Coastal Environment is located on the west coast of the North Island. It is located west of Auckland‚ midway between the entrances to the he Manukau and Kaipara Harbour. It is located between Woodhill Forest
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1 kilometre stretch of seawall. Advantages A seawall provides excellent defence where wave energy is high‚ reassures the public and has a long life span. It protects the base of cliffs‚ land and buildings against erosion. and can prevent coastal flooding in some areas. Breakwaters How it is designed to overcome the problem An offshore breakwater is a structure that parallels the shore (in the nearshore zone) and serves as a wave absorber. It reduces wave energy in its lee and creates a salient
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Head is a scenic and historic headland near the town of Bournemouth on the south coast of England. It stands mid-way between Poole harbour and Hurst spit and forms the main division between Poole and Christchurch Bays. Coastal Processes | Description | Sub Aerial | Coastal erosional processes that are not linked to the action of the sea. Erosion occurs via rain‚ weathering by wind and frost. Its impact is often seen in soil creep‚ slumping and landslides. | Corrosion | When waves approach
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this stretch: North Narrabeen‚ Narrabeen‚ South Narrabeen and Collaroy. The Narrabeen coastal environment consists of these beaches as well as the lagoon located at the north end of the beach. Surrounding areas are on a floodplain‚ meaning that high sea levels‚ large amounts of rain and runoff from nearby hills and mountains can lead to flooding occurring. Hydrological process operating within the Narrabeen Coastal environment The hydrosphere refers to the interconnected system of water storage
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Coastal erosion at Happisburgh‚ Norfolk Happisburgh‚ on Norfolk’s North Sea coast‚ is a village with a population of 1400 people in about 600 houses. The village contains a notable stone church dating from the 14th century‚ an impressive manor house‚ listed buildings and a famous red and white striped lighthouse (Figure 1). Although now a coastal village‚ Happisburgh was once some distance from the sea‚ parted from the coast by the parish of Whimpwell‚ long since eroded away. Historic records indicate
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