| 1997年汛期黄河流域干旱气象成因分析 |
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| 引用本文： | 刘萍,彭梅香,等.1997年汛期黄河流域干旱气象成因分析[J].气象与环境科学,2000(3):22-24. |
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| 作者姓名： | 刘萍 彭梅香 |
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| 作者单位： | 黄河水利委员会水文局!河南郑州450004 |
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| 摘 要： | 分析表明，1997年汛期500hPa中纬度地区盛行纬向环流，西风带冷空气路径偏比、偏弱；盛夏期间黄河流域先后受贝加尔湖阻塞高压和青藏高原高压控制；副高偏比、偏西、台风异常偏少。正是受上述主要环流系统的影响，1997年汛期黄河流域出现了持续性严重干旱，黄河下游利津站出现了有资料记录以来主汛期最长断流时间和最多断流次数。
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| 关 键 词： | 黄河流域 汛期 干旱 成因 环流系统 1997年 |
Analysis on Meteorological Contributing Factors of Arid during Flood Season in 1997 in the Yellow River Basin |
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| LIU Ping,PENG Mei-xiang,ZHOU Kang-jun,QIU Shu-hui,WANG He-shan.Analysis on Meteorological Contributing Factors of Arid during Flood Season in 1997 in the Yellow River Basin[J].Meteorological and Environmental Sciences,2000(3):22-24. |
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| Authors: | LIU Ping PENG Mei-xiang ZHOU Kang-jun QIU Shu-hui WANG He-shan |
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| Abstract: | It is shown with analysis that zonal circulation prevailed at 500hPa in the middle latitude during flood season in 1997, the cold air over westerly belt turned weaker and moved northward. Baikal Lake blocking high and Qinghai-Xizang high covered the Yellow River Basin in the flood season during midsummer. The subtropical high moved northward and westward. Typhoon appeared fewer abnormally. Effected by the key circulation system mentioned above, the continuous serious arid occurred in the Yellow River Basin during flood season in 1997, which lead to the flow cut-off days and times in Lijin station during flood season is at most since data recorded. |
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| Keywords: | Yellow River Basin Flood Season Arid Contributing factor |
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