what makes natural hazards disasters? Flashcards

1
Q

what is a natural event?

A

the actual event that occurs, e.g. earthquake, volcano, drought, tsunami

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2
Q

what is a natural hazard?

A

a natural event that has the potential to pose a risk to people and property

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3
Q

what is a natural disaster?

A

when the identified natural hazard causes a significant impact on people (socially, economically and environmentally) that makes them unable to cope with their needs and they can’t fix it.

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4
Q

what 3 categories are in the “progression of risk”

A
  1. root causes
  2. dynamic pressure
  3. unsafe conditions
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5
Q

what does the UN classify as a natural disaster?

A
  • more than 10 people die
  • more than 100 people affected
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6
Q

what does the UN consider a mega-disaster?

A
  • more than 2000 people die
  • more than 200,000 made homeless
  • reduction in GDP by 5%
  • relying on foreign aid for a year after the event
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7
Q

what is vulnerability?

A

the weakness of people when they’re exposed to risk

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8
Q

what is resilience?

A

the ability to protect and restore damage to lives, livelihoods and the infrastructure

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9
Q

what are “root causes”

A

limited access to
1. power
2. infrastructure
3. resources
ideologies
1. political systems
2. economic systems

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10
Q

what are the factors of “dynamic equilibrium”

A

lack of
1. education
2. training
3. freedom of press release
macro-forces
1. rapid change in population
2. rapid urbanisationn
3. deforestation

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11
Q

what are some “unsafe conditions”

A
  1. physical environment
  2. local economy
  3. social relations
  4. public actions
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12
Q

what is the pressure and release model formula?

A

risk = hazard x vulnerability

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13
Q

what is the other equation to identify risk?

A

risk = (hazard x vulnerability) / capacity to cope

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