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地球物理学报 2005
Historical regular patterns of the discharge in the Yellow River and the cause of their formation
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Abstract:
Based on the data of discharge and climate in the upper reaches,middle reaches and lower reaches of the Yellow River,the interdecade variations of discharge and its relationship with climatic change have been analyzed.The results indicate a notable interdecade trend of discharge,which is consistent with the interdecade variation of climate.It means that the variation of the discharge in Yellow River is basically controlled by climatic change,and the differences of the relationship vary with various seasons.For example,in winter there is a large difference between the discharge and surface water budget.It is noted that there is a notable decreasing trend of discharge since the 1980s,and the decreasing trend in the lower reaches is larger than that in the upper reaches.The results also indicate that the drought of the surface in the basin resulted in the decreasing trend of the discharge,and that the drought of the surface resulted from the increasing temperature and decreasing precipitation.