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鉴于确定洪水分期过渡期在水库实际调度中的重要意义,针对浙江省洪水分期的主要特点,基于浙江省9个代表性雨量站1961~2010年降水资料,应用模糊统计法确定了各雨量站洪水分期过渡期,进而分析了全省分期过渡期的空间分布规律。结果表明,浙西、浙南地区率先进入汛前过渡期,浙中及杭嘉湖平原地区进入汛前过渡期的时间最晚;率先进入汛后过渡期的同样是浙西、浙南地区,其次是浙中及杭嘉湖平原地区,最后进入汛后过渡期的是浙东沿海区;浙西和浙中地区汛前过渡期持续时间较短,而其他地区稍长;浙东沿海区汛后过渡期持续时间较短,其次为浙中地区,而浙西地区最长。
In view of determining the importance of flood staging in reservoir actual dispatch, according to the main characteristics of flood staging in Zhejiang Province, based on the precipitation data of 1961-2010 at nine representative rainfall stations in Zhejiang Province, the fuzzy statistic method is used to determine the flood of each rainfall station Stage transitional period, and then analyzes the spatial distribution of the whole province during the transitional period. The results show that the western Zhejiang and southern Zhejiang took the lead to enter the pre-flood transitional period, and the middle reaches of Zhejiang, Hangzhou-Jiaxing-Huzhou plain entered the pre-flood transitional period at the latest. The first transitional flood season was the western Zhejiang and southern Zhejiang, followed by Zhejiang and Hangzhou-Jiaxing-Huzhou Plain, and finally enter the transitional period after flood season is the eastern coastal area of Zhejiang; Zhejiang and Zhejiang-Zhejiang region before the flood transitional duration is shorter, while other areas slightly longer; eastern Zhejiang coastal flood season continued Shorter time, followed by Zhejiang area, while the longest in western Zhejiang.