Hazard Risk Map Drawing And Application In Emergency Management

Since recent natural disasters were happened frequently, such as Asian tsunami disaster in 2004 and Wechuan earthquake in 2008. The emergency management receives more attention from government and other community gradually. Policy makers have been aware of take preparation in advance is much more important than take response afterwards in emergency management. Emergency management should be more proactive and it has to consider the dynamic process of natural disaster. By using information technology, we can draw hazard risk maps which contain a series of potential risk information from natural disaster. This will be a proactive approach to defend crises. Hazard risk maps collect different categories of crisis, display all the information of time-space and geographic distribution. It can provide comprehensive information to governments in order to make effective decisions during emergency. On the whole, Hazard risk map has function to control all kinds of risk factors from the beginning, which will reinforce the ability to defend emergency, and reduce the opportunity of natural disaster happens.This paper explains the basic principles of hazard risk maps, including definition, characteristic, classification, components and roles in the risk management. Then, some examples about hazard risk map risk maps and a relevant comparison towards these examples with its differences and similarities will be illustrated. After that, there is a summary based on former theoretical review and practical comparison, followed by a description of the process to draw hazard risk map including risk assessment, GIS, spatial database technology and technology of information visualization. In the end, an analysis about how to apply hazard risk map in the emergency management will be the conclusion.