| 青藏高原大气低频振荡与黄河上游水量枯丰的关系 |
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| 引用本文： | 孙国武,刘晓东,等.青藏高原大气低频振荡与黄河上游水量枯丰的关系[J].高原气象,1992,11(1):107-112. |
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| 作者姓名： | 孙国武 刘晓东 |
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| 作者单位： | [1]兰州干旱气象研究所，甘肃省兰州市730020 [2]中国科学院 |
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| 摘 要： | 本文指出，青藏高原具有30－50天振荡周期的大气了低频系统，在振荡过程中呈现出两种位相：气旋位相和反气旋位相。气旋位相时段对应黄河上游水量偏丰期；反气旋位相时段则对应水量偏枯期。文中还分析了上述对应关系的可能原因，指出与大气中的低频扰动动能强或弱、低涡活跃或间歇有关。本文的研究为应用大气低频振荡特征预测黄河上游水量枯丰，作了初步有意义的探索。
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| 关 键 词： | 青藏高原 黄河上游 大气低频振荡 位相 水量 |
THE RESEARCH ON RELATIONSHIP BETWEEN LOW FREQUENCY OSCILLATION OVER QINGHAI-XIZANG PLATEAU AND RICH OR POOR WATER IN UPPER REACHES OF YELLOW RIVER |
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| Sun Guowu Chen Baode.THE RESEARCH ON RELATIONSHIP BETWEEN LOW FREQUENCY OSCILLATION OVER QINGHAI-XIZANG PLATEAU AND RICH OR POOR WATER IN UPPER REACHES OF YELLOW RIVER[J].Plateau Meteorology,1992,11(1):107-112. |
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| Authors: | Sun Guowu Chen Baode |
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| Abstract: | It is indicated that low frequency systems with 30-50 days period over Qinghai-Xizang Plateau appear two kinds of phases during oscillating process: cyclone phase and anticyclone phase. The period of cyclone phase is responded to rich water time in upper reaches of Yellow River, anticyclone is responded to poor water time.
The possible cause of this relationship is analyzed. The results show it is related to low frequency disturbance kinetic energy to be strong or weak and low votices to be active or inactive. This paper have explored the prediction of water rich or poor in upper reaches of Yellow River by using the characteristics of low frequency oscillation. |
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| Keywords: | Qinghai-Xizang Plateau Upper reaches of Yellow River Low frequency system Phase |
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