Complexity selection of a neural network model for karst flood forecasting: The case of the Lez Basin (southern France)
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Publication Date
6-17-2011
Publication Title
Journal of Hydrology
Volume Number
403
Issue Number
3-4
Abstract
A neural network model is applied to simulate the rainfall-runoff relation of a karst spring. The input selection for such a model becomes a major issue when deriving a parsimonious and efficient model. The present study is focused on these input selection methods; it begins by proposing two such methods and combines them in a subsequent step. The methods introduced are assessed for both simulation and forecasting purposes. Since rainfall is very difficult to forecast, especially in the study area, we have chosen a forecasting mode that does not require any rainfall forecast assumptions. This application has been implemented on the Lez karst aquifer, a highly complex basin due to its structure and operating conditions. Our models yield very good results, and the forecasted discharge values at the Lez spring are acceptable up to a 1-day forecasting horizon. The combined input selection method ultimately proves to be promising, by reducing input selection time while taking into account: (i) the model’s ability to accommodate nonlinearity and (ii) the forecasting horizon.
Keywords
Flash flood, Modeling, Neural networks, Karst aquifer
Document Type
Article
Digital Object Identifier (DOI)
https://doi.org/10.1016/j.jhydrol.2011.04.015
Recommended Citation
Siou, Line Kong A; Johannet, Anne; Borrell, Valérie; and Pistre, Séverin, "Complexity selection of a neural network model for karst flood forecasting: The case of the Lez Basin (southern France)" (2011). KIP Articles. 6578.
https://digitalcommons.usf.edu/kip_articles/6578