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Disaster Risk Reduction Strategy

Introduction. The first phase in reducing the risk to society from disasters is an assessment of the hazard itself .Disaster risk reduction, whether it includes seismic-resistant design, land-use management, city planning, public education or legislation should be based on a sound knowledge of hazards.

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Disaster Risk Reduction Strategy

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    1. Disaster Risk Reduction Strategy A Multidisciplinary Domain

    2. Introduction The first phase in reducing the risk to society from disasters is an assessment of the hazard itself . Disaster risk reduction, whether it includes seismic-resistant design, land-use management, city planning, public education or legislation should be based on a sound knowledge of hazards

    3. Risk Definition Risk is defined as: Hazard * Vulnerability Risk = --------------------------------- Disaster Management

    4. Definitions RISK is defined as the scope of consequences (loss of life, damage to property or the environment,..). HAZARD is defined as the Punch of Nature (external forces) VULNERABILITY is defined as the weakness/strength of the element at risk.

    5. Definitions DISASTER MANAGEMENT is defined as a comprehensive strategy based on a set of activities to reduce the risk by: 1. Reduction of the vulnerability of the elements at risk 2. Ensuring that adequate measures are implemented before disaster strikes 3. Responding as efficiently and effectively as possible to disasters when they occur 4. Assuring a sustainable development of the region stricken

    6. Evaluation HAZARD (earthquakes, flooding, drought, .) The evaluation is based upon the history of disasters that occurred in the past. Nature, severity, frequency, area, time, duration, return period,.. Collect the data, historical records, scientific reports.... Analyze the data and construct the hazard maps and quantify the hazard

    7. Evaluation VULNERABILITY (weakness / resistance of elements at risk) ?Existing building stock (state of the structures, non engineered structures, masonry structures,.) ?Structure of the population (density, old people, women, children, ) ?Environment, topography, soil,.. ?Construct vulnerability maps

    8. Evaluation DISASTER MANAGEMENT (various measures before, during and after the disaster) ?Awareness, education, laws and regulations ?Prevention and mitigation measures ?Prediction, warnings and preparedness ?Response capability ?Government, public, NGOs participating

    9. Main Phases of Disaster Management MITIGATION PHASE Disaster Mitigation consists on activities whose objective is to reduce the vulnerability of elements at risk. Prevention measures are continuous and for long term. This phase may focus on reducing the hazard itself or on reducing the vulnerability or a combination of both. Sometimes hazard cannot be affected or too costly process. These measures are:

    10. Mitigation Measures ENGINEERING AND CONSTRUCTIONS MEASURES (Strengthening structures, control structures) PHYSICAL PLANNING MEASURES (Land use planning) ECONOMIC MEASURES (legislation, tax, insurance,.) MANAGEMENT & INSTITUTIONAL MEASURES (Building capacity, expertise, education, training,..) SOCIAL MEASURES (Awareness, public information and involvement)

    11. Preparedness Phase ?DISASTER PREPAREDNESS CONSISTS ON ACTIVITIES IS AIMED TO REDUCE THE VARIOUS LOSSES THAT MAY RESULT FROM FUTURE DISASTERS. CONSTRUCT PROBABLE SCENARIOS REGARDING TO HAZARD AND VULNERABILITY AND TO ASSESS THE RISK AND ESTABLISH PLANNED MEASURES TO DEAL WITH THE GIVEN DISASTER.

    12. Response Phase ?DISASTER RESPONSE OR RISK MANAGEMENT IS THE IMPLEMENTATION OF PLANNING OR MEASURES PUT IN PLACE IN THE PREPAREDNESS PHASE. ENSURE SURVIVAL OF A MAXIMUM NUMBER OF PEOPLE AFFECTED, RE-ESTABLISH ESSENTIAL SERVICES AS RAPIDLY AS POSSIBLE.

    13. Rehabilitation or Reconstruction Phase ?REHABILITATION OR RECONSTRUCTION IS A SET OF ACTIVITIES OF GETTING THE POPULATION TO NORMAL LIFE

    14. Disaster Management Cycle

    15. QUANTIFICATION OF RISK COMBINATION OF THE DATA OF HAZARD, VULNERABILITY AND DISASTER MANAGEMENT APPLY WEIGHTING (PROBABILITIES) QUANTIFY THE RISK IN TERMS OF PROBABILITY

    16. LEVEL OF RISK ACCEPTED IT IS UTOPIAN TO THINK THAT RISK (UNCERTAINTY) CAN BE TOTALLY ELIMINATED. RISK WILL BE ALWAYS HERE AND WE SHOULD LEARN TO LIVE WITH IT. GOVERNMENTS AND SOCIETY ACCORDING GENERALLY TO THEIR ECONOMICAL IMPORTANCE DECIDE ABOUT THE LEVEL OF ACCEPTABLE RISK FOR THE COUNTRY.

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