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What are hazards?
O A perceived natural event which has the potential
to threaten both life and property
O It can only be a hazard if our lives are at risk…read more

Slide 3

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Types of hazards
O Hydro-meteorological
O Those caused by running water and its processes
(hydro) and those associated with or caused by weather
O They include:
O Floods, debris and mud flows
O Hurricanes (AKA tropical cyclones), coastal storm surges
thunder and hailstorms, rain and wind storms (including
tornadoes), blizzards and other severe storms
O Drought, bushfires, temperature extremes, sand and
dust storms…read more

Slide 4

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Types of hazards
O Geophysical
O Those caused by earth processes
O Internal earth processes of tectonic origin, e.g.
earthquakes, tsunami, and volcanic activity
O External earth processes of geomorphological
origin involving mass movements, e.g. landslides,
rockslides, rock falls…read more

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What are disasters?
O When a natural hazard has serious effects on
people and property
O E.g. causing loss of life or injury, economic damage,
disruption to peoples lives or environmental
O A disaster is a matter of scale; it is simply bigger
than a natural hazard…read more

Slide 6

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The Disaster Risk
O Risk (R) ­ the probability of a hazard event
occurring and creating loss of lives and livelihoods
O Vulnerability (V) ­ how exposed an individual or an
area may be. The tendency of a place, group or
society to incur losses to hazards
O Cope (C) ­ capacity of population to cope ­
planning, preparation and evacuation…read more


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