these seasonal river flow variations, a 17-year cycle associated with the North
Atlantic Oscillations (NAO) structures the long-term temporal variability of stream
discharges [33], as well as groundwater levels [34].
The rainfall exhibits virtually no seasonality, meaning that the river flow regime
derives from seasonal variations in real evapotranspiration, thereby resulting into
winter high flows and summer low flows; these are naturally sustained by numerous
Fig. 2 (a) Geological structure of the Seine basin. (b) Lithology of the Seine basin
6
N. Flipo et al.
Atlantic Oscillations (NAO) structures the long-term temporal variability of stream
discharges [33], as well as groundwater levels [34].
The rainfall exhibits virtually no seasonality, meaning that the river flow regime
derives from seasonal variations in real evapotranspiration, thereby resulting into
winter high flows and summer low flows; these are naturally sustained by numerous
Fig. 2 (a) Geological structure of the Seine basin. (b) Lithology of the Seine basin
6
N. Flipo et al.