basic concept of disaster and disaster risk

• Disaster


  Sudden calamitous event bringing great damage, loss, or destruction
• Hazard


  Potentially damaging physical event, phenomenon, or activity that may cause loss
• Hazard

  Can lead to disaster
• Disaster


  • Single person accident
  • Major calamities due to natural hazards
  • Major calamities due to human induced hazards
• Hazardous event


  Occurrence of a natural/human induced phenomenon in a place and time due to hazard existing
• Hazardous event


  Becomes disaster when there are losses
• Losses from disaster

  • Injuries
  • Death
  • Damaged property
  • Opportunities
  • Economic
  • Damaged environment
• Magnitude of a disaster


  Depends on hazard that triggered disaster
• Vulnerability


  Conditions determined by factors which increase susceptibility of community to impact of hazards
• Hazard + vulnerability


  = disaster
• Disaster risk


  Function of hazard exposure and vulnerability
• Assessing disaster risk


  1. Assess hazard

  2. Assess vulnerability
• Disaster risk reduction (DRR)

  Concept and practice of reducing disaster risks through efforts to analyze and manage the casual factors of disasters
• DRR strategy categories


  • Avoid the hazard
  • Manage the hazard - possibility of hazard being triggered is reduced
  • Reduce vulnerability