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Summary 3.10 Coastal Processes on Holderness Coast key notes AQA Physical Geography $3.88
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Summary 3.10 Coastal Processes on Holderness Coast key notes AQA Physical Geography
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  • Course
  • Coastal Systems and Landscapes
  • Institution
  • CIE
  • Book
  • AQA Geography A Level

Key notes on Unit 3.10 Coastal Processes on Holderness Coast in AQA Physical Geography A level. Includes key definitions, diagram and provided a final A* grade.

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  • No
  • Unit 3.10
  • May 2, 2023
  • 1
  • 2022/2023
  • Summary

Subjects

  • flamborough head
  • bridlington bay
  • spurn head
  • hard engineering
  • geology
  • wind
  • factors affecting coastal system

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  • A/AS Level
  • CIE
  • Geography
  • Coastal Systems and Landscapes
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3.10 – Coastal Processes on the Holderness coast

Factors affecting coastal system:
 Geology: chalk (relatively resistant) forms a broad arc in the region
- the eastern edge of the chalk outcrop defines the preglacial coastline
- this is the result of sediment carried and dumped by ice sheets
 Wind: blows from the north-east and drives powerful waves towards Holderness coast
- as a result of powerful north-east waves longshore drift happens along H coast
- when an area of extremely low pressure moves down the North Sea, the low
pressure causes funnelling of the water and creates storm surges (leads to erosion
and flooding)
 Response  hard engineering: used as settlement and infrastructure threatened by the
rapid rate of erosion
- only helps protect specific localities (Hornsea and Mappleton)
- deprived areas are more vulnerable to undercutting and collapse

The Holderness coast is a well-known stretch of coastline  a subcell in Sediment Cell 2

Compromises of 3 distinct coastal units:
1. Flamborough Head
- a chalk promontory that exhibits many typical
landforms from coastal erosion
- beds of chalk are clearly visible and roughly
horizontal
- in some places whole sections of chalk have
been displaced called faults
- waves are refracted by the shape of the coast 
therefore have low energy in the bay resulting in
deposited beach

2. Bridlington Bay to Spurn Head Factors of rapid rate of erosion:
- an extensive zone of erosion and sediment  long fetch and powerful waves
transfer characterised by a very rapid rate of cliff from the north-east
retreat  weak and unconsolidated till cliffs
- rates of erosion in excess of 1m per year (up to  extensive mass movement caused
by undercutting clay saturation
10m per year in places)
 narrow beach cliffs vulnerable to
- erosion generates vast amount of sediment into
wave attack and undercutting
sediment cell  lack of coastal defences

3. Spurn Head
- spit formed at the estuary of the River Humber and represents a temporary
sediment store/sink
- material is derived from the Holderness Coast and is transferred by longshore drift
- deposited sediment forms new land when reaching the estuary
- curved tip formed by direct wave action

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