Natural Hazards and Disasters
Hazards and disasters
Tell a hazard from a disaster and classify natural disasters.
Change is natural; people judge some changes good and others bad.
A disaster strikes quickly and causes serious disruption beyond normal emergency services.
Disasters can be natural or human-made (Bhopal, Chernobyl); human actions can intensify natural ones.
A hazard is a potential for harm; a disaster is very high damage. Settling hazard-prone areas raises vulnerability.
Four classes: atmospheric, terrestrial, aquatic, biological. Yokohama Strategy (1994), IDNDR (1990-2000).
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