Understanding Tectonic and Other Disaster Trends Since 1960

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  • Understanding Tectonic and Other Disaster Trends Since 1960
    • A Look at the Overall Patterns
      • The total of recorded hazards has increased
      • Reported disasters are falling
      • Number of deaths is lower
      • Number of people affected is increasing for some disaster types
      • Economic costs are increasing
      • How Good are Disaster Statistics?
        • Death toll can vary based on where direct deaths or indirect deaths are counted
        • Remote places are under-recorded
        • Declaration of deaths and causalities are subject to political bias
        • Statistics on major disasters are difficult to collect
        • Time-trend analysis
          • Depends on the means of data collection have remained the same
    • Tectonic Mega-Disasters
      • Key Characteristics
        • Large-scale disasters
        • Due to their scale they are difficult to effectively manage
        • Require international support
        • High-impact but low-probability
      • High-value manufacturing is most a risk
      • Can lead to reduction in GDP
    • Multiple-Hazard Zones
      • A number of physical hazards combine increasing the level of risk in a country
      • Repeated events mean that their is no time for recovery
        • Disaster hotspots
      • The magnitude combined with the human geography are important factors
      • Large urban areas are often multiple-hazard zones
    • Why Some Mega-Cities Have Low Hazard Resilience
      • Inappropriate Construction
        • Leads to deaths from their collapse
        • Dependency on infrastructure and services is an issue
        • Poor people settle in hazardous areas
      • Ecological Imbalance
        • Rapid urbanisation destroys ecosystems
        • Deforestation increases flash floods
      • High Population
        • More people affected therefore, higher death toll

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