Natural Disaster Management


Natural Disaster

                                     Natural disaster is the consequence when a natural hazard (e.g., volcanic eruption or earthquake) affects humans. Human vulnerability, caused by the lack of appropriate emergency management, leads to financial, environmental, or human impact. The resulting loss depends on the capacity of the population to support or resist the disaster: their resilience. This understanding is concentrated in the formulation: "disasters occur when hazards meet vulnerability". A natural hazard will hence never result in a natural disaster in areas without vulnerability, e.g., strong earthquakes in uninhabited areas. The term natural has consequently been disputed because the events simply are not hazards or disasters without human involvement.

Types of Natural Disaster

  • Tsunamis
  • Earthquakes
  • Volcanoes
  • Landslides
  • Floods
  • Droughts
  • Forest fires
  • Hurricanes
  • Thunderstorms
  • Tornadoes
  • Winter storms
  • Heat Waves
  • Special Marine
  • Space Weather

Natural Hazards Summary


Graph showing the number of deaths per year due to natural hazard events

Natural Hazards such as earthquakes, tsunami’s, cyclones, volcanic eruption, avalanches and landslides, and more are a major cause of fatalities.

•          This graph shows the the number of deaths per year due to natural hazards. Remember this is in addition to normal global fatalities due to age, famine, disease etc.

•          Every year there are close to 10,000 fatalities caused by natural hazards. In the event of large-scale events (seen by the peaks on the graph) this number rises to ten’s of thousands! (Note the logarithmic scale used for the graph)


Natural Hazards cannot be stopped, however measures can be taken to lessen the impact they have on the population. To do this we need to understand the processes involved for each type of event and work out individual emergency plans of action.

What is a “Geohazard”?

  • Earth processes (involving the lithosphere, hydrosphere & atmosphere) that, upon interaction with human activity, cause loss of life and property
  •  It is important to understand the human element
    • without it, there would be no hazard
    • because of it, the science of geohazards becomes more important every year
      • mitigation: reduction/prevention

More about GEOHAZARD
Subpages (2): Geo Hazard Tsunami Videos