GCSE GEOGRAPHY SWANAGE BAY CASE STUDY

Coastlines where the geology alternates between bands of hard and soft rock which are perpendicular to the shore are called discordant coastlines. The areas where the soft rock has eroded away, next to the headland, are called bays. It is called the Jurassic Coast as it has lots of fossils dating back to the Jurassic period. 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 Foreland, Old Harry and his Wife: 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. The arch is gradually being worn away by mechanical, chemical and biological weathering.

Coastlines where the geology alternates between bands of hard and soft rock which are perpendicular to the shore are called discordant coastlines. The area around Swanage is made up of bands of hard and soft rock. However, this creates a strong backwash which removes sediment from the beach and can lead to erosion under the wall. The headland juts out into the sea, so it is more vulnerable to high-energy waves. How is human activity, including mangement, working in combination with geomorphic processes to shape the landscape?

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.

gcse geography swanage bay case study

Chesil Beach is an example of a bar. Sea wall Concrete sea walls are in place along most of Swanage beach. Behind the limestone is a layer of clay which is softer so more easily eroded. A concordant coastline has the same type of rock along its length.

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This means waves are slowed, reducing erosion and will help to protect proprties and cliffs. 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 entrance to the cove is narrow where the waves have cut through weaknesses in the resistant limestone.

gcse geography swanage bay case study

The headland is made out of chalk, a hard rock. How are geomorphic processes creating coastal landforms? It connects the Isle of Portland to the mainland. The headland juts out into sqanage sea, so it is more vulnerable to high-energy waves.

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The alternating bands of hard and soft rock run parallel to the coast. Sediment has been deposited over time to form a spit. Groynes are wooden or stone barries which are built at right angles to the coast. Erosion is the dominant process in the bay with the beach losing material year on year. Behind the spit there is The Fleet, a lagoon.

An Examination of the coast line in the Swanage Area.

The soft rock is made of clay and sands, and the hard rock is chalk and limestone. This caused the formation of Old Harry, a stack.

gcse geography swanage bay case study

Erosion by waves opened up a crack in the headland, which then became a cave and eventually an arch. The Foreland, Old Harry and his Wife: At the back of the cove is a band of more resistant chalk, so erosion is slower here. The area around Swanage is made up of bands of hard and soft rock.

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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 areas where the soft rock has eroded away, next to the headland, are called bays. Dorsert is located on the southern coast of the UK.

Concrete sea walls are in place along most of Swanage beach. There is also a risk for people from landslides and rockfalls. This is made of chalk which is a harder rock. How do climate and geolgy influence geomorphic processes? Over time Old Harry will collapse to form a stump.

An arch at the end of the headland has collpased to form a stack called Ggeography Harry and a stump called Old Harry’s Wife. Its coastline has examples of many erosional and depositional landforms.

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. Longshore drift affects the bay carrying material mainly gravel from the south to the north of the beach. The limestone cliffs forming the back wall of the cove are vulnerable to mass movement and sometimes experience small slides and slumps.

The arch is gradually being worn away by mechanical, chemical and biological weathering.