Title :
Hilbert-Huang Transform Based Time Series Analysis of Water Quality Parameters
Author :
Naixia, Mou ; Cuixia, Chen ; Wenbao, Liu ; Hui, Wang ; Zijiang, Yu
Author_Institution :
Key Lab. of Shandong Provincial Geomatics & Digital Technol., Qingdao, China
Abstract :
In order to study affecting the variation rule of the water quality parameters, we employed Hilbert-Huang Transform (HHT) to analyze the concentration value of Cd using 26 years´ data in F3 site, and got the variation rule and trends of Cd. The results showed that: In Station F3, Cd concentration is non-stationary time series, and the trend is clearly for the upward trend, a slight decline in the future, the main cycle of 10 months, 43 months, 51 months and 73 months. To research the variation rule of Cd concentration and forecast the trends is meaningful.
Keywords :
Hilbert transforms; cadmium; time series; water quality; Cd; Hilbert-Huang transform; cadmium concentration; nonstationary time series; time series analysis; variation rule; water quality parameter; Fluctuations; Time frequency analysis; Time series analysis; Water resources; Wavelet analysis; Wavelet transforms; Hilbert-Huang Transform; time series; water quality parameters;
Conference_Titel :
Knowledge Acquisition and Modeling (KAM), 2011 Fourth International Symposium on
Conference_Location :
Sanya
Print_ISBN :
978-1-4577-1788-8
DOI :
10.1109/KAM.2011.103
