Tectonics - Disaster Mitigation

help for the A2 edexcel unit 4 geography exam relating to tectonics

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Disaster mitigation
`A wide range of approaches can be used to cope with tectonic hazards, but there are essentially three
options: do nothing, adjust or leave' (Dunn et al, 2009)
The option chosen depends on a number of factors such as nature of the hazard/type, frequency, magnitude
and population density.
Response spectrum
Do nothing_______________________adjust__________________________leave
Do nothing:
do nothing to help prepare for a potential tectonic hazard
Mainly due to the attitude that `it will never happen to me'.
Some people have a lack of education or awareness about tectonic hazards.
Nevado Del Ruiz -> lack of education lead to Armero tragedy
Haiti earthquake -> lack of education, poorest country in Western hemisphere, political instability
Asian tsunami -> lack of education, poor nations e.g. Burma
Adjust:
Communities work together to prepare for hazards
Suffering and loss reduced
Involves making an assessment of how vulnerable an area is to a given hazard
Require specialist skills and needs to be based on accurate and reliable information
Kobe earthquake -> use of technological fixes
Japan tsunami -> availability of technology
Northridge earthquake -> known hazard hot spot = lots of research and monitoring, early warning
systems
Leave:
People leave the area as its too risky
Due to perceptions held by the community
Can be temporary or permanent
Montserrat volcano -> people moved away, some moved to the north of the island and never
returned to south

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