Catastrophic Compound Disasters and Their Disaster Reduction Strategies

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We studied the scenario of simultaneous occurrence of several hazards such as earthquake, tsunami, typhoon and nuclear disasters, which increases damage and makes recovery more difficult. From the aspect of hazards, the expanding process of damage in the case that multi hazards strike mega city simultaneously has been revealed. Based on the research results of people's response to risk information, recovery in aging society, complex causal relationships in metropolitan area and situation of municipalities, we suggested strategy to reduce the damage due to compound disasters.