basic concept of disaster riskc8(1).pptx

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1. Basic Concept of Disaster and Disaster isk

2. What Are Disasters? The term “disaster” originated from the French word desastre , which is a combination of the words “des” meaning bad and “aster” meaning star. Is a tragic event that causes loss of lives and great damages to properties and the environment.

3. Classification of Disasters Natural disasters are disasters caused by natural resources. Examples are earthquakes, flood, hurricane, tornado, fire, tsunami, volcanic eruptions, drought, avalanche, and heat wave. - rapid onset or acute onset, such earthquakes, tsunamis, and flood - progressive onset or gradual onset, such as drought that may lead to famine. Man-made disasters are caused by man and are identifiable as either intentional or non-intentional humans actions. -technological disasters -terrorism or violence -complex humanitarian emergencies

4. What Is Disaster Risk? E xpressed as the likelihood of loss of life, injury or destruction and damage from a disaster in a given period of time. The United Nations International Strategy on Disaster Reduction (ISDR) defined disaster as the potential loss in lives, health status, livelihood, and various assets that are often challenging to quatify.

5. Two Caregories of Disaster Risk Intensive Risks- pertains to the exposure of a large number of people in a specific geographic area to extreme events that can further lead to catastrophic disaster impacts involving high- mortality rate and asset loss. Extensive Risks- more on the exposure of dispersed populations to various hazards of low or moderate intensity

6. Impacts of Disaster The impact of disaster are identified as: Direct losses Indirect losses Intangible losses

7. Direct Losses Indirect Losses Intangible Losses Include physical effects suchas damages anf changes that reduce ability of an individual or infrastructure Affect community by disrupting or damaging utility services and local business include psycological situations caused by casualty and ability reduction Involve damages to people, buildings, vehicles, clean-up, and disposal costs Include loss of income, increase in costs, expenses connected

8. Social Impacts Housing - Destruction may be brought by floods and earthquakes and may lead to homelessness. This can be have a long-term impact on society. Hence, the source of income of the affected families will be impared .

9. Health - Health care infrastructures are vulnerable to hazards. When equipment is damaged, hospitals cannot accomodate those who are affected by calamities.

10. Education - Schools often serve as evacuation and relief centers when disasters strikes. This disrupts the educational services that can have long-term effect on both students and teachers.

11. Economic Impacts Natural disasters tend to have stronger impact on countries with major debt and poverty problems. Funds are used for reconstruction, repair, rehabilitation, and medical aid. Negatively impact on economic growth and may lead to a decline in the capacity to import and export goods. Cause a spike of unemployment in the country.

12. Environmental Impacts The following are just several negative environment impacts of disasters: Flooding can cause tress and root crops to be submerged. Drought damages ecosystems by reducing water supply that is essential for living organisms to survive. Earthquakes can lead to environmental degradation. A tsunami can cause long-term negative effects in the population of species in the region, and consequences on the livelihood of fishermen, housing, and infrastructure.