Erosion is the dominant process in the bay with the beach losing material year on year. How are geomorphic processes creating coastal landforms? This means waves are slowed, reducing erosion and will help to protect proprties and cliffs. Groynes Groynes are wooden or stone barries which are built at right angles to the coast. Over time Old Harry will collapse to form a stump. It is unusual as it has formed parallel to the coastline.
The alternating bands of hard and soft rock run parallel to the coast. This is made of chalk which is a harder rock. Its coastline has examples of many erosional and depositional landforms. Erosion is the dominant process in the bay with the beach losing material year on year. They trap material being transported by longshore drift to create larger beaches which can then absorb wave energy to reduce erosion rates. 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.
The limestone cliffs forming the back wall of the cove are vulnerable to mass movement and sometimes experience small slides and slumps.
Erosion is the dominant process in the bay with the beach losing material year on year. They reflect waves back out to sea preventing erosion of the cliff. Biological weathering caused by the vegetation on the top of the headland is also breaking up the rock.
An Examination of the coast line in the Swanage Area.
It is unusual as it has formed parallel to the coastline. Behind the spit there is The Fleet, a lagoon. The bands of soft rock erode more quickly than those of the more resistant hard rock leaving a section of land jutting out into the sea, called a headland.
How do climate and geolgy influence geomorphic processes? Groynes Groynes are wooden or stone barries which are built at right angles xwanage the coast.
Coastal Case Studies
Its coastline has examples of many erosional and depositional landforms. Sea wall Concrete sea walls are in place along most of Swanage beach. 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.
At the back of the cove is a band of more resistant chalk, so erosion is slower here.
Coastal landforms – Edexcel – Revision 3 – GCSE Geography – BBC Bitesize
Chemical weathering and erosion are gradually wearing down these down. 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.
Because there’s no erosion, there is no material to replenish the beach meaning the geogaphy level will become lower.
The area around Swanage is made up of bands of hard and soft rock. Chesil Beach is an example of a geogaphy. This means waves are slowed, reducing erosion and will help to protect proprties geograhy cliffs. Coastlines where the geology alternates between bands of hard and soft rock which are perpendicular to the shore are called discordant coastlines. The Foreland, Old Harry and his Wife: The headland is made out of chalk, a hard rock.
There is also a risk for people from landslides and rockfalls. 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.
The headland juts out into the sea, so it is more vulnerable to high-energy waves.
Lulworth Cove is situated on the south coast of England, on a concordant coastline. It connects the Isle of Portland to the mainland. Then the cove widens where the softer clays have been more easily eroded. 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.
A concordant coastline has the same type of rock along its length. Concrete sea walls are in place along most of Swanage beach. 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. Elsewhere, the cliffs are not covered by vegetation, so wet weather weakens them causing slumps. 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.