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Case study for investigating groundwater and the future of mountain spring discharges in Southern Italy

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Abstract

Groundwater extraction is used to alleviate drought in many habitats. However, widespread drought decreases spring discharge and there is a need to integrate climate change research into resource management and action. Accurate estimates of groundwater discharge may be valuable in improving decision support systems of hydrogeological resource exploitation. The present study performs a forecast for groundwater discharge in Aquifer’s Cervialto Mountains (southern Italy). A time series starting in 1883 was the basis for long-term predictions. An Ensemble Discharge Prediction (EDisP) was applied, and the progress of the discharge ensemble forecast was inferred with the aid of an Exponential Smoothing (ES) model initialized at different annual times. EDisP-ES hindcast model experiments were tested, and discharge plume-patterns forecast was assessed with horizon placed in the year 2044. A 46-year cycle pattern was identified by comparing simulations and observations, which is essential for the forecasting purpose. ED is P-ES performed an ensemble mean path for the coming decades that indicates a discharge regime within ± 1 standard deviation around the mean value of 4.1 m3 s−1. These fluctuations are comparable with those observed in the period 1961–1980 and further back, with change-points detectable around the years 2025 and 2035. Temporary drought conditions are expected after the year 2030.

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Authors and Affiliations

  1. Science and Technology Department, University of Sannio, 82100, Benevento, Italy

    Nazzareno Diodato & Francesco Fiorillo

  2. Met European Research Observatory, 82100, Benevento, Italy

    Nazzareno Diodato & Gianni Bellocchi

  3. UMR Ecosystème Prairial, INRA, Vet Agro Sup, 63000, Clermont-Ferrand, France

    Gianni Bellocchi

  4. Acquedotto Pugliese S.p.A., 70121, Bari, Italy

    Gerardo Ventafridda

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  1. Nazzareno Diodato
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  2. Gianni Bellocchi
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  3. Francesco Fiorillo
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  4. Gerardo Ventafridda
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Correspondence to Gianni Bellocchi.

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Diodato, N., Bellocchi, G., Fiorillo, F. et al. Case study for investigating groundwater and the future of mountain spring discharges in Southern Italy. J. Mt. Sci. 14, 1791–1800 (2017). https://doi.org/10.1007/s11629-017-4445-5

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  • DOI: https://doi.org/10.1007/s11629-017-4445-5

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