HOLDERNESS COAST CASE STUDY CLIFF COLLAPSE

Coasts menu Waves Wave Action. Longshore drift no longer transports materials along this section of the coast. As the movement of sediment has been disrupted due to the construction of the stone groynes material previously feeding the beaches to the south of the Mappleton is restricted. This inevitably means that some of the Holderness coast will be eroded in order to achieve a more efficient coastal shape. However some defences have been attempted. Generally, the natural beaches of Holderness are almost always narrow and unable to stop wave erosion. However, in most place this is covered by glacial till deposited over 18, years ago.

The site is self-funded and your support is really appreciated. The exposed chalk of Flamborough provides examples of erosion, features such as caves, arches and stacks. However some defences have been attempted. Under lying the Holderness Coast is bedrock made up of Cretaceous Chalk. Spurn Point provides evidence of longshore drift on the Holderness Coast. Under lying the Holderness Coast is bedrock made up of Cretaceous Chalk.

The Holderness Coast is one of Europe’s fastest eroding coastlines. As the result of the coastal scheme at Mappleton no properties have been lost to the sea and the B remains safe from the risk of erosion.

Holderness Case Study Page

Geology The geology runs in bands, with a chalk layer at Flamborough in the North, Boulder clay or till laid down in the last ice age south of that and finally river deposits in the Humber Estuary. What is the knock-on effect of this?

holderness coast case study cliff collapse

The second is that the cliffs are made of soft boulder clay which erodes rapidly when saturated. The soft boulder clay underlying Hornsea provides clear evidence of the erosional power of the sea. The average annual rate of erosion is around 2 metres per year.

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The weak clay, stormy nature collapsee the North Sea, and rising sea levels of 4mm per year mean that the future is bleak for parts of this coastline. On average, the coastline of Holderness erodes at cligf 2m per year, mainly during storms and tidal surges.

holderness coast case study cliff collapse

However some defences have been attempted. The Holderness Coastline is in the North of England and runs between the Humber Estuary in the south and a headland at Flamborough head. The land use to the south of Mappleton is clff agricultural.

The site is self-funded and your support is really appreciated. Coastal fieldwork Find out about coastal fieldwork techniques. Following the construction of defences, they increased to 3.

The Holderness coastline

It also widely used by local farmers for access to the rich agricultural land in the area. The first is the result of the strong prevailing winds creating longshore drift that moves material south along the coastline. The exposed chalk of Flamborough provides examples of erosion, features such as caves, arches and stacks. This is around 2 million tonnes of material every year. Waves during normally occurring storm events can reach up to 4 m.

Although wave refraction focuses the waves energy on the layered and faulted rocks of Flamborough head, eroding the calk, the incredibly weak nature of the clay still means that it erodes faster than the chalk.

Rates of erosion to the south of the defences at Mappleton have increased significantly since the construction of defences at Mappleton. The land use to the south of Mappleton is predominantly agricultural.

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Generally, the natural beaches of Holderness are almost always narrow and unable to stop wave erosion. The geology runs in bands, with a chalk layer at Flamborough in the North, Boulder clay or till laid down in the last ice age south of that and finally river clast in the Humber Estuary.

The Holderness coastline

Complete description of case study. In addition to this the Holderness Coast is a popular destination for holidaymakers and during the summer months, the road is used heavily by tourists.

The first is the resuly of the strong prevailing winds creating longshore drift that moves material south along the coastline. These are shown on the map below. It is this soft boulder clay that is dliff rapidly eroded.

holderness coast case study cliff collapse

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What features of erosion are visible at Flamborough Head? Soft Engineering Find out about soft engineering along the coast. Coastal Landforms of Deposition.