Crowded Coasts

Crowded coasts part 1

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  • Crowded Coasts- Process and Population Growth
    • Physical Factors Creating Coastal Environments
      • Sub-aerial weathering
      • Erosion
        • Quarrying: The energy of a wave as it breaks against a cliff is enough to detach bits of rock.
        • Longshore Drift: Current move material along the coast.
      • Water
        • Waves
          • Waves are created by wind blowing over the sea. The friction between them creates circular motions
            • The effect of the wave depends on its height. The height is affected by wave speed and the Fetch.
            • When waves hit shore they break, friction with the sea bed slows the base of the wave and they become more squashed and oval-shaped.
  • Constructive waves have low frequency. They're low and long, which gives them more elliptical cross profile. The powerful swash carries material up the beach and deposits it.
    • Waves
      • Waves are created by wind blowing over the sea. The friction between them creates circular motions
        • The effect of the wave depends on its height. The height is affected by wave speed and the Fetch.
        • When waves hit shore they break, friction with the sea bed slows the base of the wave and they become more squashed and oval-shaped.
  • Destructive waves are high and steep and a circluar cross profile with higher frequency with a strong backwash.
    • Tides effect where waves break between high tide and low tide create and destroy landforms
      • Water
      • Throughflow and runoff from heavy rain makes cliffs unstable and more mase movement
        • Sub-aerial weathering
      • Hydraulic action: Air in cracks in cliffs is compressed when waves crash in. the pressure from compressed air breaks off rock pieces.
        • Erosion
          • Quarrying: The energy of a wave as it breaks against a cliff is enough to detach bits of rock.
          • Longshore Drift: Current move material along the coast.
      • Attrition: Bits of rock in the water smash against each other and break into smaller pieces.
        • Coastal Population Growth
          • Crowded Coasts- Process and Population Growth
            • Physical Factors Creating Coastal Environments
            • Development
              • Scenery of coast line attracting tourists e.g. Jurassic coast.
              • Nutrient-rich alluvium deposit makes soil very fertile on flood plains e.g. the Nile.
            • Research and Feildwork
          • Natural Harbours allow easy access for X and M.
            • Development
              • Scenery of coast line attracting tourists e.g. Jurassic coast.
              • Nutrient-rich alluvium deposit makes soil very fertile on flood plains e.g. the Nile.
          • Estuaries allow access for ships; encouraging port development.
            • Attractive beaches with good climates bring in tourists.
              • Coastal ecosystems have high biodiversity E.g. the Great barrier reef.
                • Why move
                  • Increase in fishing tourism and industrial development increase population because attracted to live there with opportunity for employment.
                • Look at historical documents and maps, showing how land use has change over time.
                  • Research and Feildwork
                • Find out population number and past census to find population rate of change.
                  • Look at local newspapers which may have development projects which may be trying to increase population.
                    • Carry out a land use survey looking for visible evidence of economic development
                      • Find out peoples reasons for moving/ visiting through a survey

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