Open-access Use of time series analysis for the water outflow at furnas dam

This work aimed to fit time series models to the series of water outflow at Furnas Dam. We studied the effect of trend, seasonality and intervention factor in the analysis. Data were colleted daily from January of 1963 to December of 1994 at Furnas Dam. We considered Box & Jenkins models models with and without the intervention factor. We noted that the series of water outflow are fitted by SARIMA models and the intervention factor gave us more information.

Intervention analysis; SARIMA model; water flow


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