Flashcards in Coastal erosion: Holderness Deck (10):
Average rate of erosion?
1.8m a year
The length of the coastline
Where does it stretch from?
Flamborough Head to Spurn Head
Causes of this erosion?
-Easily eroded rock type
How does easily eroded rock type affect erosion?
-The cliffs are made of till (boulder clay)
-Easily eroded through corrasion but it is also prone to slumping
How do narrow beaches cause erosion?
-beaches slow the waves, reducing their erosive power. Narrow beaches protect the cliffs less.
They are narrow because: Flamborough head sstops sediment from the north replenishing the beaches along Holderness. It is also made of chalk which dissolves when eroded rather than making sand for the beaches
-Coastal defences: at Mappleton lead to narrow beaches. This is a human cause of erosion
How do powerful waves cause erosion?
-The long fetch all away from the Arctic Ocean
-The coast faces the dominant wind and wave direction from the north-east
Social impacts of the erosion
-Property prices along the coast have fallen sharply for those houses at risk from erosion
-30 villages lost since the Roman times
Economic impacts of coastal erosion
-Visitor numbers in Bridlington dropped by over 30% between 1998 and 2006
-Seaside Caravan Park at Ulrome is losing an average of 10 pitches a year
-£2 million was spent at Mappleton in 1991 to protect the coast
-The Gas Terminal at Easington at risk (25m form cliff edge). This terminal accounts for 25%
-80,000m^2 of good quality farmland is lost each year. Effect on the livelihood of farmers