Flashcards in Natural Hazard Perception Deck (10)
When does a natural event become a natural hazard?
Where a natural event poses a potential threat to human life or property.
When does a natural hazard become a natural disaster?
When the event is realised upon a vulnerable population leading to significant loss of life or property
State with examples the three types of hazard
Geophysical - e.g. Seismic activity such as earthquakes and landslides
Atmospheric hazards- climactic processes e.g. Wildfires and draughts
Hydrological - caused by movement of water e.g. Storm surge
What is vulnerability?
How susceptible a population is to a hazard
Give 5 factors that effect risk perception
Describe four type of response to a hazard
Prevention - e.g. Tidal barriers attempt to reduce impact of the hazard
Mitigation - admit the hazard is inevitable but reduce the impacts, through better prediction and preparation ( reduce impact not magnitude)
Manage - government level schemes to reduce impacts (similar to mitigation)
Fatalism - nothing, i.e. Its gods will, also may argue preventative methods are harmful to ecosystems
What is risk sharing?
Reducing the impact on the individual by spreading it over more people
What magnitude and frequency of hazard is likely to be the most destructive? Why?
High magnitude low frequency
Powerful but population isn't prepared as well
Describe the hazard management cycle
Mitigation - minimise future disasters
Preparedness - plan a response
Response - emergency services etc
Recovery restoration + start of mitigation