Disaster Readiness and Risk Reduction (DRRR) 13. Volcanic Hazards Volcanic Hazards and their Differences a. Lahar -mixtures of volcanic water and rock fragments which rush down the slopes of a volcano and into the surrounding valleys b. Ash Fall - consists of tiny jagged particles of rock and natural gas blasted into the air by a volcano c. Pyroclastic Flow - (pyroclastic density current) a fast moving current of hot gas and rock moving away from the volcano with the speed of 700 km/h or 450 mph d. Ballistic Projectile - rocks that an erupting volcano may hurl into the air - these blocks and bombs travel like cannon balls and usually land within 2 km of the vent - can travel as far as 5 km or even further if the eruption is very explosive e. Volcanic Gases - gases such as sulfur dioxide (SO2) and hydrogen s...
Disaster Readiness and Risk Reduction (DRRR) 3. Factors Affecting Vulnerability to Hazard 1. Poverty 2. Climate Change 3. Poor Urban Governance 4. Missing regulatory framework Human Factors 1. Wealth 2. Education 3. Governance 4. Technology 5. Age 6. Gender Developed Countries are better prepared to handle the impacts of disasters as well as the aftermath as they have greater capacity to manage disaster Developing Countries are more vulnerable to natural disasters for the following reasons: poorly constructed buildings rapid population growth / high density population limited resources for disaster response and rebuilding lack of economic safety nets <Previous >Next [ P.S. I may also further explain the said factors and reasons if somebody requests for it. :) ]
Disaster Readiness and Risk Reduction (DRRR) 1. Definition of Important Terms Disaster Ø are emergencies that cannot be handled by the affected individuals or group of individuals without outside assistance Ø are caused by natural or manmade events wherein communities experience severe danger Ø can cause loss of lives and properties causing disruption to their social structures Ø can be less damaging if the population has better understanding of locally-experienced hazards Ø can be less damaging if the population implements preventive or mitigating measures against them Hazards Ø are potentially harmful events such as drought, floods, earth quakes, volcanic eruption, epidemics, etc. Vulnerability Ø is the set of characteristics of a person/household or community that make it susceptible to the damaging effects of hazards Ø is the degree of loss to each element should a hazard of given severity o...
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