Advances in the Research of Torrential Rain Disaster Assessment
On the basis of the systematic analysis of the torrential rain disaster assessment system structure, this paper compared and discussed several types of torrential rain disaster assessment methods ( gray correlation method, probability and statistics method and principal component analysis) ,and summarized their advances and weaknesses of each methods by taking actual application as an example. The results showed that Gray correlation method which had lower requirements for data and calculation was a more user - friendly disaster assessment method; Probability and Statistics was a more reasonable approach to describe the history reproduce rate of heavy rainfall disaster level; Principal component analysis can simplify several disaster- causing factors to a composite indicator to describe the intensity of torrential rain disasters, and it is more convenient and intuitive.
国家科技期刊平台
NSTL
万方数据
维普
