SWANAGE BAY CASE STUDY GCSE

As areas of the Dorset coast are being eroded, properities and infrastructure are at risk. Sediment has been deposited over time to form a spit. Coastal management strategies are being used along the Dorset coastline to prevent erosion in some areas but they have impacted the landscape and caused changes to the natural environment. The areas where the soft rock has eroded away, next to the headland, are called bays. Concrete sea walls are in place along most of Swanage beach.

The spit has continued to join to the Isle of Portland. This caused the formation of Old Harry, a stack. Over time Old Harry will collapse to form a stump. The alternating bands of hard and soft rock run parallel to the coast. How is human activity, including mangement, working in combination with geomorphic processes to shape the landscape?

Lulworth Cove is situated on the south coast of England, on a concordant coastline. But, by stopping the movement of beach material along the coast beaches further down the coast are becoming narrower and subject to more erosion due to reduced ability to absorb wave energy.

Chemical weathering and erosion are gradually wearing down these down.

An arch at the end of the headland has collpased to form a stack called Old Stuxy and a stump called Old Harry’s Wife. As areas of the Dorset coast are being eroded, properities and infrastructure are at risk. Behind the limestone is a layer of clay which is softer so more easily eroded.

Swanage and Coastal Erosion

Beach replenishment In the wintersand and shingle gcsse dredged from the sea bed at Poole Harbour and added swaange the upper parts of Swanage beach creating a wider beach. It is called the Jurassic Coast as it has lots of fossils dating back to the Jurassic period. Behind the spit there is The Fleet, a lagoon. This means waves are slowed, reducing erosion and will help to protect proprties and cliffs.

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Sea wall Concrete sea walls are in place along most of Swanage beach. How is human activity, including mangement, working in combination with geomorphic processes to shape the landscape?

swanage bay case study gcse

The headland is made out of chalk, a hard rock. There is also a risk for people from landslides and rockfalls.

Coastal landforms – Edexcel – Revision 3 – GCSE Geography – BBC Bitesize

The alternating bands of hard and soft rock run parallel to the coast. Concrete sea walls are in place along most of Swanage beach. They stdy waves back out to sea preventing erosion of the cliff. The limestone cliffs forming the back wall of the cove are vulnerable to mass movement and sometimes experience small slides and slumps. Towards the northern end of the bay the cliffs are covered in vegetation, stablising them and protecting them from erosion.

An Examination of the coast line in the Swanage Area.

How are geomorphic processes creating coastal landforms? Groynes Groynes are wooden or stone barries which are built at right angles to the coast.

swanage bay case study gcse

New timber groynes were installed on Swanage beach in and have reduced the loss of beach material. Then the cove widens where the softer clays have been more easily eroded. Erosion by waves opened up a crack in the headland, which then became a cave and eventually an arch.

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The area around Swanage is made up of bands of sutdy and soft rock. In the wintersand and shingle were dredged from the sea bed at Poole Harbour and added to the upper parts of Swanage beach creating a wider beach. The arch is gradually being worn away by mechanical, chemical and biological weathering.

swanage bay case study gcse

Groynes are wooden or stone barries which are built at right angles to the coast. Sediment has been deposited over time to form a spit. It has been created by longshore drift. The headland juts out into the sea, so it is more vulnerable to high-energy waves. Chesil Beach is an example of a bar. Dorset is located in the south of Baj. Because there’s no erosion, there is no material to replenish the beach meaning the beach level will become lower.

Its coastline has examples of many erosional and depositional landforms. However, this creates a strong backwash which removes sediment from the beach and can lead to erosion under the wall.