摘要: |
20世纪90年代,鄱阳湖平均水位超过近50年来的任何10年,年最高水位出现近100年来的最大值;灾害性洪水年年都有,大洪水接二连三;洪水位明显偏高,大洪水显著偏多,是有水文资料记载以来典型的丰水时期.本文从水文、统计角度分析这10年里的洪水特征,探讨高水位形成的原因. |
关键词: 洪水 鄱阳湖 |
DOI:10.18307/2002.0405 |
分类号: |
基金项目:水利部科技创新项目《我国防洪安全保障体系与洪水风险管理的基础研究》(SCX2000-01)资助. |
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Analysis on the Flood Characters in 1990s, Poyang Lake |
MIN QianPoyang
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Poyang Lake Hydrology Bracnch, Jiangxi Burenu of water Resources, Jiujiang 332800, P. R. China
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Abstract: |
In 1990s, the flood disasters have frequently hitlen the Poyang Lake.The highest flood levels in 1990s as well as the mean water levels have exceeded the historical records.Ifs estimated that the highest flood leveLs have targeted a recurrence interval of 100 yearvS.The author suggested that at least three aspects might have impacts on the flood regimes in Poyang Lake in 1990s, i.e., temporal and spacial precipitation variations in the upper and middle reaches of the Yangtse River;alteration of the Yangtese River-Poyang Lake relationships;and direct recalmation in lakebeaches. |
Key words: Poyang Lake flood disaster |