Multiple time scale analysis of sediment and runoff changes in the Lower Yellow River

Kaige Chi, Zhao Gang, Bo Pang*, Ziqian Huang

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

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Sediment and runoff changes of seven hydrological stations along the Lower Yellow River (LYR) (Huayuankou Station, Jiahetan Station, Gaocun Station, Sunkou Station, Ai Shan Station, Qikou Station and Lijin Station) from 1980 to 2003 were alanyzed at multiple time scale. The maximum value of monthly, daily and hourly sediment load and runoff conservations were also analyzed with the annually mean value. Mann-Kendall non-parametric mathematics correlation test and Hurst coefficient method were adopted in the study. Research results indicate that (1) the runoff of seven hydrological stations was significantly reduced in the study period at different time scales. However, the trends of sediment load in these stations were not obvious. The sediment load of Huayuankou, Jiahetan and Aishan stations even slightly increased with the runoff decrease. (2) The trends of the sediment load with different time scale showed differences at Luokou and Lijin stations. Although the annually and monthly sediment load were broadly flat, the maximum hourly sediment load showed decrease trend. (3) According to the Hurst coefficients, the trend of sediment and runoff will be continue without taking measures, which proved the necessary of runoff-sediment regulation scheme.

Original languageEnglish
Pages (from-to)357-362
Number of pages6
JournalProceedings of the International Association of Hydrological Sciences
Early online date5 Jun 2018
Publication statusPublished - 2018
Event8th International Symposium on Integrated Water Resources Management, IWRM 2018 - Beijing, China
Duration: 13 Jun 201815 Jun 2018

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