1: Natural hazards Flashcards
What makes a natural hazard different from other kinds of hazards?
Risk is due to naturally occurring processes
Definition of natural disaster
Realisation of the natural hazard with injury or loss of life to people
Geological hazards
Earthquakes
Sinkholes
Landslides
Tsunamis
Climatic hazards
Hurricanes
Flooding
Mid-latitude storms
Droughts
Tornadoes
Biological hazards
Wildfires
Disease
Pests
Why a natural disaster is never “completely natural”?
Always needs interaction between people + environment
A volcano that erupts far from humans and effects no one is not a natural disaster
Risk
Probability of an event happening and the scale of its possible damage
What determines the risk level in a place?
Distribution
Frequency
Scale
Prediction
What determines size of a disaster?
Magnitude
Vulnerability of the population
Human factors that affect the level of vulnerability
Population density
Supply of reliable resources
Quality of defences
How to reduce vulnerability
Raise awareness
Do this through precautionary actions
Plans for coping with the impact