Disaster Readiness and Risk Reduction: Concepts, Cycle, Classifications, and Effects
Etymology and Historical Perspective of Disaster
Etymological Roots:
"des": Latin/Greek prefix meaning bad.
"aster": Root word meaning star.
Combined Translation: EVIL STAR.
Historical Beliefs:
In ancient times, people believed celestial bodies—including the movements and positions of stars and planets—exerted direct influence on human affairs and the natural world.
When disastrous or tragic events occurred, they were frequently attributed to unfavorable, malevolent, or bad celestial alignments.
Formal Definitions of Disaster
Philippine Disaster Risk Reduction and Management Act of 2010 (Republic Act No. 10121, Sec. 3):
Defines a disaster as a severe disruption of a community or society's day-to-day functioning that involves extensive physical, financial, material, or ecological losses.
World Health Organization (WHO):
Defines a disaster as an incidence unsettling the customary situation of subsistence and resulting to a point of distress that go beyond the capacity of adaptation of the affected community.
Johns Hopkins Bloomberg School of Public Health:
Defines a disaster as sudden overwhelming and unforeseen events occurring across various levels:
Household Level
Community Level
Provincial Level
The Disaster Cycle
The Disaster Cycle represents a continuous, multi-phase framework designed to mitigate, prepare for, respond to, and recover from disaster events:
1. Mitigation Phase:
Focuses on proactive actions taken to prevent or reduce the impact of disasters before they occur.
Involves identifying systemic vulnerabilities, establishing and enforcing safety regulations, engineering resilient infrastructure, and raising public awareness to minimize potential consequences.
2. Preparedness Phase:
Focuses on developing operational plans, emergency procedures, and logistical resources for communities and organizations to ensure an effective response when a disaster strikes.
Includes drafting emergency protocols, conducting drills and training exercises, stockpiling critical supplies, and setting up emergency communication networks.
3. Response Phase:
Triggered immediately when a disaster occurs by executing pre-established emergency plans and mobilizing resources to address immediate hazards.
Encompasses search and rescue operations, providing urgent medical care, distributing essential relief supplies, and coordinating emergency response services.
4. Recovery Phase:
Initiated following the immediate response phase to restore affected communities to their pre-disaster status or better.
Encompasses rebuilding destroyed infrastructure, providing direct assistance to affected individuals and families, restoring municipal services, and addressing long-term recovery needs.
Continuous Feedback Loop (Return to Mitigation):
The disaster cycle is continuous. Insights and lessons learned during the recovery phase inform enhanced mitigation measures, continuously decreasing vulnerability to future events.
Classifications of Disasters
Natural Disasters:
Disasters resulting directly from natural physical processes and environmental phenomena of the Earth.
Examples: Earthquakes, Hurricanes, Typhoons, Cyclones, Floods, Tornadoes, Tsunamis, Volcanic Eruptions, Droughts, and Landslides.
Man-Made Disasters:
Disasters arising from human activity, decisions, or negligence, whether intentional or unintentional.
Examples: Industrial Accidents, Nuclear Accidents, Terrorism, Technological Failures, War and Conflict, and Environmental Pollution.
Comprehensive Effects of Disasters
The severe impacts of disasters vary according to the type of disaster, its magnitude, the level of community preparedness, and the baseline vulnerability of the affected region.
1. Loss of Life and Injury:
Disasters result in direct casualties and severe physical trauma to survivors.
Direct physical force in extreme events such as earthquakes, tsunamis, and typhoons poses an immediate hazard to human life.
2. Physical Damage and Destruction:
Structural destruction affects housing, private commercial facilities, public buildings, bridges, and transport networks, disrupting day-to-day societal functioning over extended periods.
3. Displacement and Migration:
Disasters force populations to evacuate their homes temporarily or relocate permanently.
Results in large-scale human displacement, placing severe burdens on host communities and creating acute humanitarian challenges.
4. Economic Impact:
Causes severe financial destruction through loss of business assets, severe unemployment, halted commerce, and massive budgetary strains on municipal and national governments.
5. Environmental Degradation:
Industrial disasters cause chemical leaks and oil spills, polluting soil, air, and water supplies.
Natural disasters like floods and landslides trigger severe soil erosion, deforestation, and ecosystem damage.
6. Health Issues:
Outbreaks of waterborne pathogens and infectious diseases frequently occur due to compromised sanitation, lack of potable water, destroyed medical infrastructure, and crowded emergency shelters.
7. Psychosocial Impact:
Survivors suffer acute emotional distress, long-term psychological trauma, anxiety, and grief resulting from loss of family members, property, and livelihoods.
8. Infrastructure and Service Disruption:
Severing critical utility networks—such as clean water access, electrical grids, and telecommunication systems—impedes rapid emergency operations and delays recovery efforts.
9. Long-Term Development Setbacks:
Diverting developmental funding toward immediate recovery delays planned infrastructure and social programs, setting back regional growth and worsening economic inequality.
10. Community Resilience and Learning:
Disasters prompt communities to develop heightened operational resilience, refine emergency response strategies, and upgrade disaster preparedness for future occurrences.