SWANAGE CASE STUDY GCSE

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. The areas where the soft rock has eroded away, next to the headland, are called bays. Chemical weathering and erosion are gradually wearing down these down. New timber groynes were installed on Swanage beach in and have reduced the loss of beach material. Concrete sea walls are in place along most of Swanage beach. The limestone cliffs forming the back wall of the cove are vulnerable to mass movement and sometimes experience small slides and slumps.

Erosion by waves opened up a crack in the headland, which then became a cave and eventually an arch. As areas of the Dorset coast are being eroded, properities and infrastructure are at risk. Elsewhere, the cliffs are not covered by vegetation, so wet weather weakens them causing slumps. Over time Old Harry will collapse to form a stump. How do climate and geolgy influence geomorphic processes? The alternating bands of hard and soft rock run parallel to the coast. Concrete sea walls are in place along most of Swanage beach.

However, this creates a strong backwash which removes sediment from the beach and can lead to erosion under the wall.

swanage case study gcse

It is called the Jurassic Coast as it has lots of fossils dating back to the Jurassic period. Groynes Groynes are wooden or stone barries which are built at right angles to the coast.

Biological weathering caused by the vegetation on the top of the headland is also breaking up the rock.

swanage case study gcse

Coastlines where the geology alternates between bands of hard and soft rock which are perpendicular to the shore are called discordant coastlines. The spit has continued to join to the Isle of Portland. This caused the formation of Old Harry, dwanage stack.

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As areas of the Dorset coast are being eroded, properities and infrastructure are at risk.

Towards the northern end of the bay the cliffs are covered in vegetation, stablising them and protecting them from erosion. 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.

They reflect waves back out to sea preventing erosion of the cliff.

Coastal Case Studies

Erosion is the dominant process in the bay with the beach losing material year on year. The limestone cliffs forming the back wall of the cove are vulnerable to mass movement and sometimes experience small slides and slumps. The Foreland, Old Harry and his Wife: The area around Swanage is made up of bands of hard and soft rock.

They trap material being transported by longshore drift to create larger beaches which can then absorb wave energy to stud erosion rates. The headland is made out of chalk, a hard rock. Its coastline has examples of many erosional and depositional landforms. Concrete sea walls are in place along most of Swanage beach. This is made of chalk which is a harder rock.

Coastal Case Studies – Mindmap in GCSE Geography

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.

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

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Because there’s no erosion, there is no material to replenish the beach meaning the beach level will become lower. Longshore drift affects the bay carrying material mainly gravel from the south to the north of the beach.

At the back of the cove is a band of more resistant chalk, so erosion is slower here. There is also a risk for people from landslides and rockfalls. Chesil Beach is an example of a bar. 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 headland juts out into the sea, so it is more vulnerable to high-energy waves.

An Examination of the coast line in the Swanage Area.

How are geomorphic processes creating coastal landforms? Dorsert is located on the southern coast of the UK. It is unusual as it has formed parallel to the coastline. Sea wall Concrete sea walls are in place along most of Swanage beach. The entrance to the cove is narrow where the waves have cut through weaknesses in the resistant limestone. Beach replenishment In the wintersand and shingle were dredged from the sea bed at Poole Harbour and added to the upper parts of Swanage swanags creating a wider beach.

Behind the spit there is The Fleet, a lagoon. It has been created by longshore drift.