Coastal Processes Diagram & examples of Positive & Negative Feedback

  • 2 examples of positive feedback
  • 2 examples of negative feedback
  • Coastal processes diagram:
  • Mass movement
  • Sub-aerial
  • Cliff foot
  • Erosion
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Preview of Coastal Processes Diagram & examples of Positive & Negative Feedback

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AS Geography 15th May 2010
Coasts
EXAMPLES OF POSITIVE & NEGATIVE FEEDBACK
Positive Feedback
Trampling on sand dunes causes erosion of sand and damage to
vegetation Blowout
Plagioclimax (Grazing of sheep) Should be climatic climax Prevents
development of deciduous woodland heather moorland occurs
Negative Feedback
Winter storms Erodes embryo/foredune restored by wind blowing sand
back in
Fishtail groynes Change destructive waves into constructive waves
Wave length increases and wave height decreases More depositio n
COASTAL PROCESSES
Types of Erosion
Abrasion
Hydraulic action
Attrition
Chris Cartwright

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