Analysis on the process of flow-sediment in Jianli reach of Yangtze river before and after the construction of three gorges project
文献类型：会议论文
| 作者 | Liu,XiaoFang(刘晓芳) ; Huang,HeQing ; Deng,CaiYun |
| 出版日期 | 2012 |
| 会议名称 | 2012 International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2012 |
| 会议日期 | August 10, 2012 - August 12, 2012 |
| 会议地点 | Zhangjiajie, China |
| 英文摘要 | Jianli Reach has long been exposed to labile main flow and the frequent translocation between the main channel and the lateral branch. To investigate how the long-term process of flow-sediment influences the adjustment of river channel pattern, monthly time series (1951-2009) of runoff and sediment load at Jianli hydrological station of Yangtze River were analyzed using three methods: R/S analysis to estimate Hurst exponent, Mann-Kendall method and the time series anomaly analysis. The result shows that on 1 year time scale, the values of Hurst exponent are indicating persistence, that is to say, the trend of runoff and sediment in the future will generally be the same as the past, and the persistence in runoff series is stronger than that in the sediment load. The period of oscillation in annual runoff and in sediment load is about 30 years. The result of Mann-Kendall test shows an abrupt change point of runoff time-series at 1967 and an abrupt change point of sediment load time-series at 2003. And during the flood season, the values of Hurst exponent still indicate persistence, which is weaker than that in whole year correspondingly. © (2012) Trans Tech Publications, Switzerland. |
| 收录类别 | EI |
| 会议录出版者 | Trans Tech Publications |
| 会议录出版地 | P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany |
| 语种 | 英语 |
| ISSN号 | 1660-9336 |
| ISBN号 | 9783037854860 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/28002]  |
| 专题 | 地理科学与资源研究所_研究生部 |
| 推荐引用方式 GB/T 7714 | Liu,XiaoFang,Huang,HeQing,Deng,CaiYun. Analysis on the process of flow-sediment in Jianli reach of Yangtze river before and after the construction of three gorges project[C]. 见:2012 International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2012. Zhangjiajie, China. August 10, 2012 - August 12, 2012. |
入库方式： OAI收割
来源：地理科学与资源研究所
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