Unit 1C - Coastal Landscapes in the UK - Case Study - Holderness Coast coastal managements Flashcards
Where is Holderness coastline?
North Yorkshire coastline facing North Sea. Coastline begins with Flamborough Head in north and ends at Spurn Head in south at the Humber estuary
Why is Holderness coast the fastest eroding in Europe?
Soft boulder clay cliffs and destructive waves from Atlantic
4 coastal managements that have they built at Mappleton and to do what?
2 rock groynes - to catch and build up sand as it moves southwards
Sea wall - placed along cliff foot to counteract wave erosion
Rock revetment - to reduce risk of landslip
Beach nourishment
2 +ves and 3 -ves of management scheme at Mappleton?
+ve: - cliffs no longer at great risk from erosion
- groynes stopped beach material moving south
- ve: - people south of Mappleton experiencing ‘knock-on’ effects of coastal management
- groynes have distrubed natural LSD movement
- beaches become narrower and cliffs unprotected
Has management at Mappleton been successful?
Yes, coastline is no longer eroding at Mappleton
What has happened to areas such as the farm at Great Cowden (south of Mapleton) because of management at Mappleton?
Coastline is eroding more rapidly due to stronger waves and lack of beach material from LSD
vWhat is protecting Easington gas terminal?
A sea wall
What has been built at Hornsea?
19 groynes, underpinning of sea walls, and building a flood wall
How many villages have disappeared and the much land has been eaten inland by the sea in 35 years?
30 villages have disappeared and 60 metres inland eaten in 35 years
Cost of defences and how much rock used to protect Mappleton in 1991?
£2 million, using 61,000 tonnes of rocks