disaster risk reduction
Cards (105)
- Emergency management plans should estimate the nature, severity, and potential effects of disasters and establish broad organizational structures and policies for achieving emergency management objectives.
- Examples of natural events include:
- Typhoon
- Volcanic eruption
- Tsunami
- Flood
- Earthquake
- Landslide
- When does a natural event become a hazard?
- When they have the potential to harm people or cause property damage, social and economic disruption
- Hazard definition:
- A phenomenon that poses a threat to people, structures, or economic assets
- Any phenomenon that has the potential to cause disruption or damage to humans and their environment
- An event or occurrence that has the potential for causing injury to life, property, and the environment
- Natural hazard definition:
- A natural event or process that affects people causing loss of life or injury, economic damage, disruption to people's lives, or environmental degradation
- When does a hazard become a disaster?
- If it causes large-scale damages
- The "Crunch" Diagram:
- Vulnerability (exposure) -> Disaster <- Hazards (trigger events)
- Dregg's Model:
- A disaster happens when the probable destructive agent, the hazard, hits a vulnerable populated area
- Disaster risk definition:
- Refers to the expectation value of deaths, injuries, and property losses that would be caused by a hazard
- Elements of disaster risk:
- Disaster Risk = Hazard x Exposure x Vulnerability
- Disaster risk is expressed as a function of hazard, exposure, and vulnerability
- Seeks to express the chance of the disaster happening and quantify the impact
- Magnitude of a hazard depends on:
- Severity of hazard
- Quantity of exposure of the elements at risk
- Vulnerability level/quality of exposure
- Minimizing disaster risk:
- Reduce exposure and vulnerability
- Relocate people to lower vulnerability
- Why are people resistant to relocation?
- This would mean giving up their homes, land, and even jobs
- People tend to turn a blind eye and remain in places previously hit by a disaster
- The most vulnerable are the poor who are forced to live in unsafe places
- RA 10121 Definition of Disaster: