Geography, Global Hazards, case studies, the Big Dry Australia

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  • Created by: liv.liv
  • Created on: 11-04-22 15:43
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  • Big Dry
    • Effects
      • Enviromental
        • Grassland turned to shrub land
        • energy from hydroelectricity decreased
          • Australia relied on fossil fuels, more pollution
        • loss of vegitation
        • loss of wildlife and plant biodiversity
        • soil erosion
        • the Murry Darling river basin ran dry
    • causes
      • environmental
        • el  nino  phenomenon
          • A change in sea surface temperatures in the tropical eastern Pacific ocean
        • climate change intensified the climate
      • human (direct)
        • major water wasting
          • Washing cars, filling pools and watering gardens+
        • defoestation
          • reduces the ssurface area for leaves to catch raindrops and precipiates back to clouds
          • water goes to the soil, saturated
    • reponses
      • recycling water (using the water more than once
      • government encouraged reduced water usage
        • 4 minute showers
      • desalination plant built in Sydney
      • national government gave 1.7 million dollars to farmers every week
      • strict water regulations
      • free counselling
      • environmental scientists did water trading, calculating how much water could be used by each state
      • local government made water management plans
        • fines if broken
      • more efficient irrigation plan set up
      • better drought plans for future droughts
      • however many states did not do enough and suicide rates in farmers were high as a result
  • Social
    • rural suicide rates increased
    • people in rural areas moved to cities, putting strain on cities
    • Less children in school (rural) as need to help on farms
    • Effects
      • Enviromental
        • Grassland turned to shrub land
        • energy from hydroelectricity decreased
          • Australia relied on fossil fuels, more pollution
        • loss of vegitation
        • loss of wildlife and plant biodiversity
        • soil erosion
        • the Murry Darling river basin ran dry

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