SWANAGE CASE STUDY GCSE

It has been created by longshore drift. Longshore drift affects the bay carrying material mainly gravel from the south to the north of the beach. This is made of chalk which is a harder rock. The entrance to the cove is narrow where the waves have cut through weaknesses in the resistant limestone. The arch is gradually being worn away by mechanical, chemical and biological weathering. 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. In the winter , sand and shingle were dredged from the sea bed at Poole Harbour and added to the upper parts of Swanage beach creating a wider beach.

Behind the spit there is The Fleet, a lagoon. 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. Then the cove widens where the softer clays have been more easily eroded. As areas of the Dorset coast are being eroded, properities and infrastructure are at risk. The arch is gradually being worn away by mechanical, chemical and biological weathering.

Groynes Groynes are caase or stone barries which are built at right angles to the coast. Beach replenishment 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. It is unusual as it has formed parallel to the coastline. Chesil Beach is an example of a bar. This caused the formation of Old Harry, a stack.

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Then the cove widens where the softer clays have been more easily eroded. The area around Swanage is made up of bands of hard and soft rock. Sediment has been deposited over time to form a spit. It is called the Jurassic Coast as it has lots of fossils dating back to the Jurassic period. The alternating bands of hard and swajage rock run parallel to the coast.

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This means waves are slowed, reducing erosion and will help to protect proprties and cliffs.

At the back of the cove is a band of more resistant chalk, so erosion is slower here. The headland is made out of chalk, a hard rock.

Its coastline has examples of many erosional and depositional landforms. Towards the northern end of the bay the cliffs are covered in vegetation, stablising them and protecting them from erosion. Chemical weathering and erosion are gradually wearing down these down. Coastal management strategies are being used along the Dorset coastline to prevent erosion in swanagge areas but they have impacted the landscape and caused changes to the natural environment.

Coastal Case Studies

The areas where the soft rock has eroded away, next to the headland, are called gdse. Behind the limestone is a layer of clay which is softer so more easily eroded.

It connects the Isle of Portland to the mainland.

swanage case study gcse

There is also a risk for people from landslides and rockfalls. An arch at the end of the headland has collpased to form a stack called Old Harry and a stump called Old Harry’s Wife.

Longshore drift affects the bay carrying material mainly gravel from the south to stdy north of the beach.

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New timber groynes were installed on Swanage beach in and have reduced the loss of beach material. Behind the spit there is The Fleet, a stdy.

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The limestone cliffs forming the back wall of the cove are vulnerable to mass movement and sometimes experience small slides and slumps. Over time Old Harry will collapse to form a stump. Coastlines where the geology alternates between bands of hard and soft rock which are perpendicular to the cqse are called discordant coastlines.

Dorsert is located on the southern coast of the UK.

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The spit has continued to join to the Isle of Portland. Because there’s no erosion, there is no material to replenish the beach meaning the beach level will become lower. 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 entrance to the cove is narrow where the waves have cut through weaknesses in the resistant limestone.

swanage case study gcse

The bands of soft rock erode more quickly than those of the more resistant hard rock leaving a section of land jutting casd into the sea, called a headland. Groynes are wooden or stone barries which are built at right angles to the coast. As areas of the Dorset coast are being eroded, properities and infrastructure are at risk.

swanage case study gcse

The soft rock is made of clay and sands, and the hard rock is chalk and limestone.