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《Engineering Journal of Wuhan University》 2013-01
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Application of recurrence plots to nonlinear analysis of runoff time series

LI Xinjie,HU Tiesong,DONG Xiuming(State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China)  
To make use of the nonlinear property of runoff records in feature extraction to classy the runoff effectively,the method of recurrence plots and approximate entropy are citied to get dynamic characteristics property of original time series.After calculating recurrence plots for Brownian movement,the sinusoid and Logistic map,and the recurrence plots of time series at different time scales are studied quantitatively.Based on the recurrence plots algorithm,approximate entropy is used for characterizing complexity analysis of runoff series qualitatively;the approximate entropy and recurrence plot of four different runoff series are compared.The results indicate that the recurrence analysis is a valid supplementary diagnosis tool for flow pattern identification.
【Fund】: 国家自然科学基金项目(编号:71171151);; 高等学校博士点基金项目(编号:20100141110061)
【CateGory Index】: P333.1
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