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Open AccessFeature PaperArticle

Geohydrology of a Reference Mediterranean Catchment (Cilento UNESCO Geopark, Southern Italy)

1
Department of Civil Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy
2
C.U.GR.I (University Centre for Research on Major Hazards)—Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2020, 10(12), 4117; https://doi.org/10.3390/app10124117
Received: 30 April 2020 / Revised: 6 June 2020 / Accepted: 8 June 2020 / Published: 15 June 2020
(This article belongs to the Special Issue Advances in Geohydrology: Methods and Applications)
In this paper, we studied the geo-hydrological structure and behavior of a reference catchment, located in the Cilento UNESCO Global Geopark, southern Italy, representative of the hilly, terrigenous and forested headwaters of the Mediterranean eco-region. Based on detailed hydrogeological and hydro-geomorphological surveys and geomorphometric analysis, starting in 2012, a hydro-chemical monitoring activity at the catchment and sub-catchment scale started, and a hydro-chemical dataset was progressively recorded at daily and sub-hourly time steps. Based on this dataset, the authors performed an original procedure to identify different runoff components, derived by applying cascade mass balance filtering. The integration of hydrological and geomorphological approaches allowed us to obtain an interesting conceptualization of the storm flow generation using hydro-chemical signatures related to different runoff components produced during the increasing–decreasing cycle of the flood event magnitude. The hydro-system activated progressively different runoff sources (i.e., groundwater, riparian corridor, hillslope and hollow) and involved various mechanisms (i.e., groundwater ridging, saturation-excess, infiltration-excess and soil pipe exfiltration). The geo-hydrological conceptualization was validated using a hysteresis Q-EC loop analysis performed on selected events that showed how hysteretic indices could be used to characterize the events in respect to their origins, mechanisms and pathways in similar catchments. View Full-Text
Keywords: hydro-geomorphology; hydro-chemograph monitoring; runoff separation; perceptual model hydro-geomorphology; hydro-chemograph monitoring; runoff separation; perceptual model
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MDPI and ACS Style

Guida, D.; Cuomo, A.; Longobardi, A.; Villani, P. Geohydrology of a Reference Mediterranean Catchment (Cilento UNESCO Geopark, Southern Italy). Appl. Sci. 2020, 10, 4117.

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