The headland juts out into the sea, so it is more vulnerable to high-energy waves. Chesil Beach is an example of a bar. The headland is made out of chalk, a hard rock. The alternating bands of hard and soft rock run parallel to the coast. 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.
Erosion is the dominant process in the bay with the beach losing material year on year. Over time Old Harry will collapse to form a stump. Elsewhere, the cliffs are not covered by vegetation, so wet weather weakens them causing slumps. New timber groynes were installed on Swanage beach in and have reduced the loss of beach material. Chesil Beach is an example of a bar. There is also a risk for people from landslides and rockfalls. Chemical weathering and erosion are gradually wearing down these down.
Coastal Case Studies – Mindmap in GCSE Geography
They reflect waves back out to sea preventing erosion of the cliff. This means waves are slowed, reducing erosion and will help to protect proprties and cliffs. Coastlines where the geology alternates between bands of hard and soft rock which are perpendicular to the shore are called discordant coastlines. This caused the formation of Old Harry, a stack. New timber groynes were installed on Swanage beach in and have reduced the loss of beach material.
Coastal Case Studies
Erosion by waves opened up a crack in the headland, geoggaphy then became a cave and eventually an arch. The headland juts out into the sea, so it is more vulnerable to high-energy waves. It is called the Jurassic Coast as it has lots of fossils dating back to the Jurassic period. Lulworth Cove is situated on the south coast of England, on a concordant coastline. The headland is made out of chalk, a hard rock. Behind the limestone is a layer of clay which is softer so more easily eroded.
However, this creates a strong backwash which removes sediment from the beach and sudy lead to erosion under the wall.
Dorset – case study of a UK coastal landscape
Concrete sea walls are in place along most of Swanage beach. There is also a risk for people from landslides and rockfalls.
csae The arch is gradually being worn away by mechanical, chemical and biological weathering. A concordant coastline has the same atudy of rock along its length.
At the back of the cove is a band of more resistant chalk, so erosion is slower here. Biological weathering caused by the vegetation on the top of the headland is also breaking up the rock. This is made of chalk which is a harder rock. The areas where the soft rock has eroded away, next to the headland, are called bays. It has been created by longshore drift.
Coastal landforms – Edexcel – Revision 3 – GCSE Geography – BBC Bitesize
Over time Old Harry will collapse to form a stump. How is human activity, including mangement, working in combination with geomorphic processes to shape the landscape?
How do climate and geolgy influence geomorphic processes?
Because there’s no erosion, there is no material to replenish the beach meaning the beach level will become lower. It is unusual as it has formed parallel to the coastline. Its coastline has examples of many erosional and depositional landforms.
Coastal management strategies are being used along the Dorset coastline to swnage erosion in some areas but they have impacted the landscape and caused changes to the natural environment. The soft rock is made of clay and sands, and the hard rock is chalk and limestone. In the wintersand and shingle were dredged gvse the sea bed at Poole Harbour and added to the upper parts of Swanage beach creating a wider beach.
Elsewhere, the cliffs are not covered by vegetation, so wet weather weakens them causing slumps. The alternating bands of hard and soft rock run parallel to the coast.
Groynes are wooden or stone barries which are built at right angles to the coast. How are geomorphic processes creating coastal landforms?
The area around Swanage is made up of bands of hard and soft rock. An arch at the end of the headland has collpased to form a stack called Old Stuy and a stump called Old Harry’s Wife.