Global Hazards

UNIT 1 - 6 GEO 1 

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  • Hazards
    • Types
      • Meterological (Weather)
        • Storms
        • Drought
        • Floods
      • Geo-morphological (Changing shape of the earth)
        • Landslides
        • Avalanche
        • Wildfires
      • Geological (Rocks)
        • Earthquakes
        • Volcanoes
    • Risk
      • To people
        • Death, injury,disease, stress
      • To goods
        • Economic loss, infrastructure damage, property damage
      • To the enviroment
        • Pollution, loss of flora, fauna and amenty
    • Classification
      • Hydro meteorological
      • Geophysical
    • El Nino
      • Changes in the circulation of cold and warm waters
    • Human factors
      • Rapid population growth
        • Pressure on land
        • Growing number of extra vulnerable people, e.g. the elderly
      • Deforestation/land degradation
        • Causes flooding, desertification and soil erosion
        • Destruction of natural defenses, e.g. mangroves
      • Urbanisation
        • Development of squatter settlements (at risk of flooding and landslides)
      • Poverty
        • Higher death toll
        • LEDC's are unable to afford to prepare
        • Poor education - unable to have access to tehnology
        • Inability to get aid to remote areas due to poor infrastructure
      • Politics
        • Corrupt governments may misuse resources, or prevent the use of internation aid
    • Trends
      • Analyisis
        • Can be disrupted by mega disasters
        • Number of reported disasters are increasing
          • A more globalised world means access to an improved IT
        • Increasing population means an increase in vulnerable people
    • Case studies
      • California
        • Impacted by the El Nino Southern Oscillation
        • The most hazardous zone is concentrated along the San Andreas fault
        • Example - Earthquakes
          • Causes - Network of active faults lie under Los Angles and San Fransico
            • Impacts - Soft basin sediments in LA lead to rapid shaking. 5 major earthquakes were recorded in the last 100 years.
      • Philippines
        • Lies in a belt of tropical cyclones
        • Near an active plate boundary
        • Oceanic Philippines plate is being subducted beneath the Eurasian plate
        • Tropical monsoon climate
        • Population density of 240 people per km2
        • Average of 10 typhoons a season
        • Example - Tropical storm Thelma
          • Impacts - Killed a total 35,983, injuring a further 29,178, leaving 6.25 million homeless with $9,018,574 worth of damage
      • UK
        • One of the mist hazard-free parts of the world
        • Example - Shropshire, UK
          • Tenbury Wells - Flash flooding, 2007
          • North Shropshire - Great droughts in 1959, 1976, 2003
          • Shrewsbury - Earthquake, 1896, 1995
  • Inability to get aid to remote areas due to poor infrastructure
  • Corrupt governments may misuse resources, or prevent the use of internation aid

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