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气象:2002,28(3):19-23
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水阳江洪峰与强降水
(1.安徽省宣城地区气象局,242000;2.安徽省宣城地区水电局)
Flood Peak and Heavy Rainfall in the Shuiyang River
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中文摘要: 用1964~1999年水阳江水位和雨量资料,分析水阳江水位、面雨量变化规律和洪峰出现特征。结果表明,6月平均面雨量为241.5mm ,7、8月平均面雨量分别为186.5mm、155.7mm。宣城出现13次超警戒水位过程;新河庄出现2 5次超警戒水位过程,且连续超警戒水位日数长。洪峰出现前一周为连阴雨天气,一周平均面雨量为164.5mm。季内日面雨量存在60天周期变化现象,新河庄日平均水位存在60~120天周期变化;1999年宣城日平均水位的小波分析结果为60天周期变化,与新河庄日平均水位功率谱分析结果一致
Abstract:The climatic characteristics of area precipitation and flood peak in Shuiyang River are analyzed using the water level and precipitation data from 1964 to 1999.The results show that in June,July and August,the average area rainfall are 241.5mm,186.5mm and 155.7mm,respectively.There are 13 and 25 times of over alerting water level in Xuancheng and in Xinhezhuang of Anhui Province,respectively.There is weekly continuous rain days before the flood peak,the weekly area precipitation is 164.5mm.Moreover,the results also show that the area precipitation within a season undergoes 60-day quasi-period,and the water level 60-and 120-day quasi-period in Xinhezhuang.And,by using the wavelet analysis,it is found that the mean daily water level in Xuancheng in 1999 undergoes 60-day quasi-period.It is consistent with that in Xinhezhuang by using the spectral analysis.
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引用文本:
吴有训,程光宇,李敬义,郑光明,包明木,李来根,潘荣山,王周青,2002.水阳江洪峰与强降水[J].气象,28(3):19-23.
,2002.Flood Peak and Heavy Rainfall in the Shuiyang River[J].Meteor Mon,28(3):19-23.