Dynamic Analysis of Sediment in the Yellow River

Based on the field data from 1950 to 1999, this paper analyzed the annual variations and annual distribution of the runoff, sediment amount and concentration in the middle and lower Yellow River Sediment changes in the lower Yellow River during the different operations of Sanmenxia reservoir are also analyzed The result shows that sediment characteristic values in the Yellow River have been changed greatly in the last 50 years For example, variability of the runoff, sediment amount and concentration is asynchronous, and the runoff proportion in the flood season becomes lower, but the sediment amount proportion in the flood season becomes higher