Characteristics Identification of Runoff and Sediment Flux Based on Wavelet Analysis Approach in Lower Yellow River

Yu Zhi Shi; Ming Yuan Fan; Yu Yan Zhang; Hai Jiao Liu; Xiao Feng Yang

doi:10.4028/www.scientific.net/AMM.700.506

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 700Characteristics Identification of Runoff and...

Characteristics Identification of Runoff and Sediment Flux Based on Wavelet Analysis Approach in Lower Yellow River

Abstract:

Due to the influences of climate change and human activities, the water and sediment flux of the Yellow River are certainly changing. This paper selects monthly time series of runoff and sediment flux from 1950 to 2009 for study at Lijin station, in lower Yellow River. A widely used identification method, wavelet analysis, is applied for recognizing changing point and cycle of the runoff and sediment respectively in multi-scale of annual, flood season and non-flood season. The results indicate that there are two significant changing points in 1985, 2002 year, and cycle recognized results are different in multi-scale as well as with different hydrology factors.