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Analysis of Drought/Flood and Water Resources in Huanghe River Valley

Huang Jiayou and Zhang Tan (Department of Geophysics, Peking University, Beijing 100871)  
The estimation of the evaporation and underflow in the Huanghe River valley are made using monthly precipitations, temperatures and runoff data during the period of 1951~1980. Further the utilizable water resources are estimated from them and proposed in this paper. It is found that the relationship between the utilizable water resource and precipitation is very close. But there are some difference between them in power spectrum. The only period in the precipitation is 2.6 year, and there are two significant periods of 2.3 year and 9 year in the water resources. The study of the correlations between the two series and atmospheric circulation series in summer, autumn and winter in last year, and spring in current year shows that the correlations between the utilizable water resource and circulation is higher than the the one between the precipitations and the circulation, especially in last autumn and winter. The close relation is also represented by the relationship between the utilizable water resource and the synoptic system of westerlies and subtropical belt.
【Fund】: 国家基础性研究重大关键项目
【CateGory Index】: TV211.1
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