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A physical event that can cause damage.
Presence of people in hazardous areas.
Susceptibility of people and their infrastructure to hazard impacts.
Originating from natural phenomena.
Related to biological phenomena such as diseases.
Hazard, exposure, and vulnerability, three words to remember, they define disaster variability.
Once there was a town near a volcano. The people were warned, but many did not prepare. When the eruption happened, the exposure showed how vulnerable they really were. Always prepare for hazards to reduce vulnerability!
H.E.V: Hazard, Exposure, Vulnerability. Think of it like a triangle, one cannot stand without the other.
HEV – Remember: Hazard leads to Exposure which influences Vulnerability.
Term
What is a hazard?
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Term
What does exposure mean?
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Term
Define vulnerability.
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A potentially damaging physical event or human activity that represents a threat.
The presence of people and properties in hazard-prone areas.
The susceptibility of people and properties to suffer harm from hazards.
Hazards triggered by natural processes or phenomena.
Hazards arising from biological phenomena, such as epidemics or infestations.
Hazards resulting from technological processes or failures.
This section discusses hazard exposure, vulnerability, and their roles in determining disaster risk, alongside various types of hazards.
Hazard exposure and vulnerability are explained as main factors that define disaster risk. Different scenarios illustrate how the presence of people and settlements increases risk during hazards like landslides. The section categorizes hazards into natural, biological, technological, and their origins, underscoring their impacts on life and property.
In this section, we explore how hazard exposure, vulnerability, and the nature of hazards define disaster risk. Three illustrative scenarios showcase how landslides can have varying levels of risk based on population density in the affected areas. We categorize hazards into natural (such as geological and hydro-meteorological), biological, and technological origins. Each categorization emphasizes the potential damages these hazards can cause, from loss of life to significant economic disruption. Furthermore, characteristics like frequency, duration, and extent are essential components when assessing risks in disaster recovery and management.