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http://dx.doi.org/10.3741/JKWRA.2006.39.3.253

Nonlinear Forecasting of Daily Runoff Using Inverse Approach Method  

Lee, Bae-Sung (korea Institute of Water and Environment)
Jeong, Dong-Kug (Dept. of Civil and Environmental Engrg., Hannam Univ.)
Jung, Tae-Sung (Dept. of Civil and Environmental Engrg., Hannam Univ.)
Lee, Sang-Jin (Korea Institute of Water and Environment)
Publication Information
Journal of Korea Water Resources Association / v.39, no.3, 2006 , pp. 253-259 More about this Journal
Abstract
In almost all previous hydrological studies, the standard approach adopted for nonlinear time series analysis is to perform system characterization first followed by forecasting. However, a practical inverse approach for forecasting nonlinear hydrological time series was proposed recently To investigate the applicability standard approach method and inverse approach, this study used a theoretical time series (Mackey-Glass time series) and daily streamflows of the Bear River in Idaho. To predict a theoretical time series and daily streamflow, this study used local approximation method. From chaos analysis, chaotic characteristics are found in daily streamflow of the Bear River in Idaho. Resulting from 1, 3 and 5-day prediction, inverse approach method is shown to be better than the standard approach for a theoretical chaotic time series and daily streamflow.
Keywords
standard approach method; inverse approach method; chaos; daily streamflows;
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