Tectonic Hazards 1.4-1.6 Flashcards
Disaster definition
A serious disruption of the function of a community involving widespread human, materialistic, economic or environmental losses and impacts which exceeds the ability of the affected community or society to cope with its own resources
Vulnerability
The ability to anticipate, cope with, resist and recover from a natural hazard
Resilience
Aka capacity to cope
The ability of a community or society exposed to hazards to resist, absorb and recover from the effects of a hazard.
Deggs model
Risk equation
Risk = Hazard x Vulnerability / Capacity to cope
Political factors affecting risk
Corruption Evacuation contingency plans Building regulations Funding of emergency services Other infrastructure Communications with other countries
Economic and social factors affecting risk
Population density Wealth of inhabitants Deprivation Health care services Public education
Physical and environmental factors affecting risk
Location (near hazards)
Prevention measures against damage on buildings
Urbanisation
5 key factors is the complex relationship between risk, hazards and people
1 Unpredictability 2 Lack of alternatives 3 Dynamic Hazards 4 Cost-benefit of staying put 5 Russian Roulette reaction
3 reasons why disasters don’t just happen, they are caused
Prevention - the can (sometimes ) be prevented
Hazard Dependent - some floods can be caused by human activity
Preparation - disasters can be avoided with good enough contingency plans
Risk - Unpredictability
It catches people and governments out
Risk - Lack of alternatives
There is no other choice
Land is cheaper in hazardous areas
Risk - Dynamic hazards
The threat is not constant
For example, Hurricane season is only June-August
Risk - Cost-benefit of staying put
Some may decide that the benefit outweighs the risk
For example, volcanoes make soil more fertile so business more lucrative - and they are unlikely to erupt often
Risk - Russian Roulette
There is an acceptance of risk but it is seen as unlikely
There may be a warped perception of risk