Detection of Abrupt Changes in Runoff in the Weihe River Basin
Joint Authors
Wang, Zhiliang
Li, Yanling
Li, Huiling
Chang, Jianxia
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-01-11
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Climate change and human activities are two major driving factors for variations in hydrological patterns globally, and it is of significant importance to distinguish their effects on the change of hydrological regime in order to formulate robust water management strategies.
Hilbert-Huang transform-based time-frequency analysis is employed in this study to detect abrupt changes and periods of the runoff at five hydrological stations in the Weihe River Basin, China, from 1951 to 2010.
The key part of the method is the empirical decomposition mode with which any complicated data set can be decomposed into small number of intrinsic mode functions that admit well adaptive Hilbert transforms.
Moreover, an attempt has been made to find out the specific reason for the abrupt point at the five hydrological stations in the Weihe River Basin.
The results are presented as follows: (1) annual runoff significantly declined in the basin in intervals of 8~15 years; (2) abrupt changes occurred in 1971, 1982, and 1994 at Huaxian, 1972 and 1982 at Xianyang, 1992 at Zhangjiashan, 1990 at Zhuangtou, and 1984 at Beidao; (3) changes were more frequent and complex in the mainstream and downstream reaches than in tributaries and upstream reaches, respectively.
American Psychological Association (APA)
Li, Yanling& Chang, Jianxia& Wang, Zhiliang& Li, Huiling. 2016. Detection of Abrupt Changes in Runoff in the Weihe River Basin. Advances in Meteorology،Vol. 2016, no. 2016, pp.1-8.
https://search.emarefa.net/detail/BIM-1095613
Modern Language Association (MLA)
Li, Yanling…[et al.]. Detection of Abrupt Changes in Runoff in the Weihe River Basin. Advances in Meteorology No. 2016 (2016), pp.1-8.
https://search.emarefa.net/detail/BIM-1095613
American Medical Association (AMA)
Li, Yanling& Chang, Jianxia& Wang, Zhiliang& Li, Huiling. Detection of Abrupt Changes in Runoff in the Weihe River Basin. Advances in Meteorology. 2016. Vol. 2016, no. 2016, pp.1-8.
https://search.emarefa.net/detail/BIM-1095613
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1095613