Area Hazard Evaluation For Weather Disaster

According to the statistics, the loss brought by weather disasters in all disasters is the most serious. The subjects and fruits for disasters studying and disasters alleviating in the past emphasized particularly on natural factors analyzing, such as the law of disaster distribution, the forming mechanism of disasters, the forecasting of trend direction etc. Hazard evaluation of disasters began in America in 1930s, and then it was developed in many countries and in many fields. The hazard evaluation of weather disaster was later than geologic disaster. Now-days there is no universal and systemic theory for weather disaster hazard evaluation, some specialists apply themselves to some kind of hazard evaluation studying; some take up with the probability of disasters; others hammer at the fatalness of disasters; because of the abroad content of hazard evaluation of weather disasters, a few people commit themselves to vulnerability for hazards; more specialists mainly study the disaster loss evaluation. In the aspect of technique and means of evaluation, engineering, mechanics, mathematics and statistics are broadly used; with the generalizing of GIS,Some software of it are being used in hazard evaluation of weather disaster, and some achievements were acquired.Taking the main weather disasters in Chongqing as example; with the adequately analyzing of weather background and population, society, economy in Chongqing; on studying the attribution and forming mechanics of the weather disasters such as drought,...