What is the disaster risk equation?
What is the disaster risk equation?
The foundational equation for much of disaster research in the past two decades appeared initially in Blaikie et al. (1994), and was DR= H x V, where disaster risk (DR) is a function not only of a hazard (H) but also of the vulnerability (V) of the impact area.
How is disaster risk defined?
The potential loss of life, injury, or destroyed or damaged assets which could occur to a system, society or a community in a specific period of time, determined probabilistically as a function of hazard, exposure, vulnerability and capacity.
What is risk in geography?
Vulnerability: the geographical conditions that increases the susceptibility of a community to a hazard or to the impact of a hazard event. Risk: the probability of a hazard event causing harmful consequences (loss of life, injuries damage)
What is a disaster a level geography?
A disaster is the realisation of the hazard, i.e. harm has occurred.
What are the 3 elements of disaster risk equation?
There are three basic components in the LIU system, each related to a core area in the DRR formula (see Table 1): livelihood baselines; • hazard analysis; and • outcome analysis.
What are the six Disaster Risk Factors?
Annotation: Underlying disaster risk drivers — also referred to as underlying disaster risk factors — include poverty and inequality, climate change and variability, unplanned and rapid urbanization and the lack of disaster risk considerations in land management and environmental and natural resource management, as …
What is classification of disaster?
Disasters are classified into natural disasters, man-made disasters, and hybrid disasters. Man-made disasters are classified into technological disasters, transportation accidents, public places failure, and production failure.
How do you calculate risk in geography?
Risk can be calculated using the following equation: Risk = Probability of Hazard x Degree of Vulnerability.
What is the similarities of hazard and disaster?
A hazard is any phenomena that has the potential to cause destruction to life and property. A hazard become a disaster when the potential to cause destruction is fulfilled. When there is harm to life and property of humans, the hazard is termed a disaster. All disasters are hazards, but all hazards are not disasters.
What is the formula for the disaster risk equation?
Risk = Hazards x Vulnerability. Capacity. The risk of disaster grows as global hazards and people’s vulnerability increases, while their capacity to cope decreases. Similarly, what is the formula for disaster risk?
How is the relationship between disasters and hazards?
The relationship between hazards and disasters can be understood using the hazard risk equation. The risk of disaster rises if the hazard magnitude rises (e.g. VEI 6 eruption compared with a VEI 3). If vulnerability rises (poverty, lack of preparedness, lack of awareness of potential hazards,) so does risk;
Why do we call the geography risk equation 10?
However what it is saying is that within the components it is favourable to have the lowest numerator and highest denominator as possible to reduce the disaster risk so here in the UK there is a really high capacity to cope so mathematically let’s call it 10 as opposed to 1 for a less developed country.
When do you refer to the risk equation?
This means the overall ‘value’ of risk will be less as the denominator is a bigger value. So in general you just refer to the equation when discussing various disasters that have occured or how at risk a disaster hotspot is compared to others. THANK YOU SO MUCH it was exactly what I needed.