2011•Yellow RiverRequires access

Study on the Evolution Characteristic of Over-Bank Flooding in Huayuankou-Sunkou Reach of the Lower Yellow River

Song Li-xuan

Abstract

The paper analyzed the flood peak type,the spread velocity of flood peak,the peak-clipping rate and the flood stage in over-bank flood evolution in the lower Yellow River,for example Huayuankou-Sunkou reach.The outcomes shows that when the peak discharge of Huayuankou Station is greater than 9 500 m3/s,the spread velocity of flood peak is decreasing gradually in Huayuankou-Jiahetan reach,Jiahetan-Gaocun reach and Gaocun-Sunkou reach;along with the increase of peak discharge in Huayuankou Station,the peak-clipping rate also increases,and the average value of the peak-clipping rate is 6.4%、6.7% and 8.2% respectively in Huayuankou-Jiahetan reach,Jiahetan-Gaocun reach and Gaocun-Sunkou reach.

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Key concepts: Flood myth, Environmental science, Clipping (morphology), Hydrology (agriculture), Geography, Geology, Archaeology, Linguistics