Storm surge disaster grade evaluation based on principal component analysis in China coast

摘要

According to the disasters datas of 33 typhoon storm surge from 2001 to 2008,the methods of principal component analysis was used to storm surge disasters grade evaluation, and developped the classification method of storm surge disaster grade.It is verified that principal component analysis is a scientific and reliable method for storm surge disaster evaluation by various means, such as data comparison of different evaluation methods, choosing different number of indicators and intercomparison to the description of China Marine Disaster Bulletin.