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风暴潮是我国沿海省市面临的重大自然灾害之一,造成了难以估量的损失。本文选取1989～2008年沿海11省、市、自治区风暴潮历史数据作为研究样本,运用因子得分基础上的聚类分析和熵值评价等方法,对沿海省市风暴潮灾害经济损失风险进行评估,最终按风暴潮灾害的经济损失程度将沿海省市划分为三个区域:即上海为第一区,表示风暴潮经济损失风险最小;海南、福建、浙江、广东四省为第三区,风险最大;其他省、市、自治区为第二区,表示经济损失风险居中。三区域的灾害区划,为我们从更深层次认识风暴潮发生及造成的损失情况提供了新的视角。
Storm surge is one of the major natural disasters that our coastal provinces and municipalities are facing, resulting in incalculable losses. In this paper, the historical data of storm surges in 11 provinces, municipalities and autonomous regions across the sea from 1989 to 2008 were selected as the research samples. Based on the clustering analysis and entropy evaluation based on factor score, the risk of economic loss from storm surge in coastal provinces and cities was evaluated. According to the economic loss of storm surge, the coastal provinces and cities are divided into three regions at first: Shanghai is the first district, indicating that the risk of economic loss of storm surge is the lowest; Hainan, Fujian, Zhejiang and Guangdong are the third districts with the highest risk ; Other provinces, municipalities and autonomous regions for the second district, said the risk of economic loss is the center. The division of disasters in the three regions provided a new perspective for us to understand more about the storm surge and the losses caused by them.