What is the relationship of the three hazard exposure and vulnerability to disaster risk?
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What is the relationship of the three hazard exposure and vulnerability to disaster risk?
In disasters, there are three broad areas of risk to health: the hazard that can cause damage, exposure to the hazard and the vulnerability of the exposed population (see also Chapters 1.3 and 2.5) (1). Disaster research often strives to show that these risks affect morbidity, mortality or well- being in some way.
What is the difference between hazard vulnerability and risk?
Structure of vulnerability and disasters….
| Hazard | : | potential threat to humans and their welfare |
|---|---|---|
| vulnerability | : | exposure and susceptibility to losses |
| = | ||
| risk | : | probability of hazard occurrence |
What is the relationship between vulnerability and disaster?
Disasters are caused by the interaction of vulnerability and hazards. There are many different factors that determine vulnerability. Hazards can also be called ‘Trigger Events’. When one hazard meets with a vulnerable community a disaster is likely to occur.
What happens when hazard vulnerability and exposure come together?
Risk is a combination of three components: hazard, exposure, and vulnerability. Data from each of these categories can be used to paint a picture of risk in a certain location and over time. Hazard – a potentially destructive physical phenomenon (e.g., an earthquake, a windstorm, a flood).
What is the relationship between hazard and exposure?
Hazard is defined as a potentially damaging physical event, phenomenon or human activity, which may cause the loss of life or injury, property damage, social and economic disruption or environmental degradation, and characterised by its location, intensity, frequency and probability (ISDR 2004), whereas exposed …
Why is it important to understand hazards exposure and vulnerabilities?
Risk information helps tell the story of what, when, and where a disaster might happen, how severe it could be, and who would be most affected. If we don’t understand risk, we can’t manage it.
What are the links between hazard vulnerability and capacity?
When hazard and vulnerability are high, it will cause disaster but when capacity is present, it will decrease the impact. Hence, to reduce the risk of a disaster, 1) Decrease the vulnerability of the community; and 2) Increase the capacity of the community.
How do you calculate risk by integrating hazard and vulnerability?
The Risk equation is known to be Risk = Hazard X Vulnerability. However, many published papers on integrated risk assessment calculate Risk index as Risk = Hazard + Vulnerability, with no justification.
What makes a situation vulnerable to a threat or hazard?
What is Vulnerability. Vulnerability describes the characteristics and circumstances of a community, system or asset that make it susceptible to the damaging effects of a hazard. There are many aspects of vulnerability, arising from various physical, social, economic, and environmental factors.
In what ways is there a relationship between hazards vulnerability resilience and disaster?
Under certain hazard intensity, it is often the vulnerability that determines the probability of a disaster and its losses, so a system with higher vulnerability may amplify its disaster risk (Fig. 5). Resilience in disaster risk domain often expresses as the reactive responses to a specific disaster.
