Natural Hazard Management

• What is a natural disaster?

  A natural hazard that has fatalities and damage
• Risk


  =hazard x vulnerability
• Reasons why people's natural hazard risk is increased


  -unpredictable, don't know when hazards will happen

  -lack of alternative, people can't afford to live elsewhere

  -dynamic hazards, hazards increase and decrease in threat

  -cost to benefit, benefits may outweigh risks
• PPPMR


  -prediction

  -protection

  -preparation

  -mitigation

  -relief
• Hazard Profiling


  Hazard management use magnitude frequency relationships as a tool to help understand risk

  Model is based on the general assumption that magnitude is often inversely proportional to the frequency of a particular event
• Disaster risk index


  Seeks to combine physical exposure to hazards with vulnerability
• Absolute risk


  Numbers of people killed per year.

  -Most at risk are the most populated countries
• Relative risk


  Number of deaths per million inhabitants

  -Most at risk are small island nations
• Multiple hazard zones


  Places where a number of physical hazards combine to create an increased level of risk for the country and its population.
• Disaster hotspot


  A country or area that is extremely disaster prone
• Example of multi-hazard zones


  -California

  -Philippines

  -Indonesia

  -Japan