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18 Cards in this Set
- Front
- Back
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Natural events involve disruption of a temporary |
Equilibrium |
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Natural Hazard (defn.) |
When a natural process poses a threat to human life or property |
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When is a hazard considered a NATURAL DISASTER? |
When the events causes significant damage to life or property |
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Catastrophe |
When a natural event kills or injures large numbers of people or causes extensive property damage |
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What is the potential impact of a natural disaster related to? |
The size of the event Impact on the public |
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Cyclic Event |
A natural event that occur at predictable intervals |
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Forecast |
A statement that a future event will occur in a certain steal at a given span of time with a particular probability |
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Recurrence interval |
The average number of years between events of a certain size in a location |
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How are forecasts expressed as? |
They are expressed as recurrence intervals |
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What is the probability of an event occurring related to? |
It is related to the magnitude of the event |
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Fractal |
Features that look basically the same regardless of size |
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What is the relationship between Frequency and Magnitude? |
MAGNITUDE of an event is INVERSELY PROPORTIONAL to FREQUENCY of the type of event |
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Feedback Effect |
Where a small disturbance in a system leads to effects that increase that disturbance or decrease it |
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Precursor events |
Series of smaller events that may warn of an impending disaster |
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Mitigation |
Refers to efforts to prepare for a disaster and reduce its damage |
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What can mitigation include? |
Engineering projects Government policies Public education |
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What is one way to reduce losses from natural disasters? |
One way is to find out where disasters are likely to occur |
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What is Land-Use Planning |
To restrict development is places where natural disasters are most likely to occur |
