摘要
利用1950年以来的旱洪灾害资料和湘西自治州17站1957～1998年的历年降水资料，分析了厄尔尼诺现象与湘西自治州的降水和旱洪灾害之间的关系．结果表明，三者之间有很好的相关．即厄尔尼诺当年一般为平水年，发生旱洪灾害的几率不大；厄尔尼诺年次一年，降水的丰平枯规律不明显，但发生洪灾的几率远远大于旱灾；厄尔尼诺年次二年一般为平水年，发生旱灾的几率远远大于洪灾．
Based on the data of flood and drought disasters since 1950, and the precipitation of every year of 17 stations in Xiangxi autonomous prefceture during the period from 1957 to 1998, the authors have analysed the relations between ENSO and precipitation and flood and drought disasters in Xiangxi autonomous prefecture. The results show that relations between them are obvious: in the year of ENSO phenomena the precipitation is the average and the probability of flood and drought is not big, in the first year after ENSO phehomena, the laws of precipitation are not obvious, but the probability of flood disasters is bigger than that of drought disasters, the preciptation in the second year after ENSO phenomna is to the average, but the probability of drought disasters is bigger than that of flood dissters.
出处
《湖南教育学院学报》
2000年第2期78-82,共5页
Journal of Hunan Educational Institute
基金
湖南省教委基金!"湖南灾荒史及减灾防灾对策研究"99A09
关键词
厄尔尼诺现象
降水
湘西自治州
旱灾
洪灾
ENSO phenomena
precipitation
flood and drought disasters, Xiangxi autonomous prefecture
