High Energy coastline CS Flashcards
What is the name of the high energy coastline?
Saltburn to Flamborough Head, Yorkshire
Describe 5 Features of Saltburn to Flamborough Head, Yorkshire
Prevailing Wind: from the SW
Direction of dominant waves: from the N / NE
Direction of longshore drift: from North to South
Length of fetch: 1500km across the North Sea
Wave height: average 4m
What sediment cell is Saltburn to Flamborough Head apart of?
Sediment cell: 1d
apart of sediment cell 1 from St Abbs Head to Flamborough Head – approx. 60km
What is the geology of Saltburn to Flamborough Head
Mainly chalk
varied rock resistances explaining the varied landscape
how are new arches, stacks, geos and blowholes formed?
High energy environment results in strong erosional processes
Happens over many years as rock gets weakened
What are examples of Blowholes along the high energy coastline?
Selwick bay
How are bays effected by the high energy coastline?
destructive waves cause material to be removed and erosion of cliffs take place by marine processes
Can have significant material removed within hours
How are bays effected by the high energy coastline?
destructive waves cause material to be removed and erosion of cliffs take place by marine processes
Can have significant material removed within hours
What an example of a bay along the High energy coastline and how it has been impacted?
Robin Hood’s bay
since 1970, 200 cottages have been lost
How do high energy coastlines cause cliffs to slump?
the ground becomes saturated with water and can cause this to slump
This can happen within Days/hours/mins
What is an example of cliff slumping?
Holbeck Hall, Scarborough
60m of cliff lost overnight with a further 35m over the next 3 days
How can high energy coastlines cause the retreat of cliffs/ the extension of shore platforms?
Marine erosion at the base - weathering of cliff face until rockfall occurs
Takes many years for the undercut to form but seconds for the rockfall
What is an example of shore platforms extending?
Ravenscar Cowbar Nab, Staithes
How can a high energy coastline cause beaches to change in gradient and size?
Deposition rates can depend on the type of wave
change in prevailing winds impacts LSD
Gradient changes are seasonal
Storm conditions can cause rapid change over hours
What is an example of A beach impacted by a high energy coastline?
Robin hood’s bay
Whitby sands/ Filey Bay - LSD
