the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Study of the effect of local forcing on the fractal behavior of shallow groundwater levels in a riparian aquifer
Athanasios Paschalis
Adrian P. Butler
Christian Onof
John P. Bloomfield
James P. R. Sorensen
Abstract. With the help of a physically based recharge-groundwater flow model and robust detrended fluctuation analysis (r-DFAn), the effect of local (catchment-scale) forcing on groundwater levels’ scaling behavior in a riparian aquifer in Wallingford, UK, is investigated. The local forcings investigated in this study include the rainfall’s temporal scaling behavior (which is simulated by changing rainfall’s intermittency parameter in a β-lognormal multiplicative random cascade model), the aquifer’s physical parameters (saturated hydraulic conductivity, specific yield, the empirical coefficients of the water retention curve, and the river stage’s scaling behavior).
Groundwater level’s scaling behaviour was found to be most sensitive to rainfall’s fractal behaviour. Additionally, there is preliminary evidence suggesting that changes to the rainfall’s local scaling behaviour (i.e., change to the series’ scaling that induces crossovers) affects the groundwater’s and the recharge’s local scaling behaviour.
Abrar Habib et al.
Status: open (until 03 May 2023)
Abrar Habib et al.
Abrar Habib et al.
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