GCSE GEOGRAPHY SWANAGE CASE STUDY

The soft rock is made of clay and sands, and the hard rock is chalk and limestone. Groynes are wooden or stone barries which are built at right angles to the coast. The spit has continued to join to the Isle of Portland. The Foreland, Old Harry and his Wife: They trap material being transported by longshore drift to create larger beaches which can then absorb wave energy to reduce erosion rates.

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. This means waves are slowed, reducing erosion and will help to protect proprties and cliffs. It is unusual as it has formed parallel to the coastline. New timber groynes were installed on Swanage beach in and have reduced the loss of beach material. Elsewhere, the cliffs are not covered by vegetation, so wet weather weakens them causing slumps. The Foreland, Old Harry and his Wife:

Then the cove widens where the softer clays have been more easily eroded. In the wintersand and shingle were dredged from the sea bed at Poole Harbour and added to the upper parts of Vcse beach creating a wider beach. The arch is gradually being worn away by mechanical, chemical and biological weathering.

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Behind the spit there is The Fleet, a lagoon. Groynes are wooden or stone barries which are built at right angles to the coast.

The headland is made out of chalk, a hard rock. How do climate and geolgy influence geomorphic processes? However, this creates a strong backwash which removes sediment from the beach and can lead to erosion under the wall.

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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 entrance to the cove is narrow where the waves have cut through weaknesses in the resistant limestone. How are geomorphic processes creating coastal landforms? Coastal management strategies are being used along the Dorset coastline to prevent erosion in some areas but they swanahe impacted the landscape and caused changes to the natural environment.

Chemical weathering and erosion zwanage gradually wearing down these down. Over time Old Harry will collapse to form a stump. The alternating bands of hard and soft rock run parallel to the coast.

Groynes Groynes are wooden or stone barries which are built at right angles to the coast. But, by stopping the movement of srudy 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.

An Examination of the coast line in the Swanage Area.

Biological weathering caused by the vegetation on the top of the headland is also breaking up the rock. How is human activity, including mangement, working in combination with geomorphic processes to shape the landscape?

Longshore drift affects the bay carrying material mainly gravel from the south to the gdography of the beach. Sediment has been deposited over time to form a spit.

gcse geography swanage case study

This is made of chalk which is a harder rock. Because there’s no erosion, there is no material to replenish the beach meaning the beach level will become lower.

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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. The spit has continued to join to the Isle of Portland.

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The area around Swanage is made up of bands of hard and soft rock. It has been created by longshore drift. There is also a risk for people from landslides and rockfalls. It is called the Jurassic Coast as it has lots of fossils dating back to the Jurassic period.

gcse geography swanage case study

It is unusual as it has formed parallel to the coastline. Elsewhere, the cliffs are not covered by vegetation, so wet weather weakens them causing slumps.

The bands of soft rock erode more quickly than those of the more resistant hard rock leaving a section of land jutting out into sutdy sea, called a headland. This caused the formation of Old Harry, a stack. The limestone cliffs forming the back wall of the cove are vulnerable to mass movement and sometimes experience small slides and slumps.

Dorset is located in the south of England. This means waves are slowed, reducing erosion and will help to protect proprties and cliffs.