Implementation of Chaotic Analysis on River Discharge Time Series

Aslıhan Albostan, Bihrat Önöz

Energy Institute, Istanbul Technical University, Istanbul, Turkey.

DOI: 10.4236/epe.2015.73008                

Abstract

The gauged river data play an important role in modeling, planning and management of the river basins. Among the hydrological data, the daily discharge data seem to be more significant for determining the amount of energy production and the control the risks of floods and drought. Hence, the data need correct measurement, analysis, and reliable estimates. The purpose of the paper is to investigate the question whether all the stations in a river basin exhibit chaotic behavior. For this purpose, the daily discharge data of four gauge stations are examined by using three nonlinear data analysis methods: 1) phase space reconstruction; 2) correlation dimension; and 3) local approximation where all those methods provide identification of chaotic behaviors. The results show that all stations exhibit chaotic character. Taking into account the proven chaotic characteristic of the stations, local approximation method is applied to observe the prediction accuracy. Considering the fact that global warming is a serious threat on natural resources, the prediction accuracy is becoming a key factor to ensure sustainability. Hence, this study is a good example on the implementation of chaotic analysis by means of the obtained results from the methods.

Keywords

Nonlinear Analysis, Chaotic Analysis, Prediction, Daily River Discharge, Yesil Irmak River Basin

Conflicts of Interest

The authors declare no conflicts of interest.

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