Coupled ground uplift and groundwater rebound in the metropolitan city of Naples (southern Italy)

Coda, Silvio; Tessitore, Serena; Martire, Diego Di; Calcaterra, Domenico; Vita, Pantaleone De; Allocca, Vincenzo

doi:10.1016/j.jhydrol.2018.11.074

Cited by 33 publications

(44 citation statements)

References 52 publications

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“…The conceptual flow model ( Figure 1a) shows a general groundwater flow oriented from NE to SW with a main contribution to groundwater recharge deriving from rainfall and lateral groundwater inflows from the adjoining karst aquifers of the southern Apennines and Somma-Vesuvius volcanic aquifer (Figure 1a). At the local scale (Figures 1b and 2), the study area is characterized by an aquifer system [58]. The northern and central sectors are characterized by a phreatic shallow alluvial aquifer and a deep semi-confined one separated by the Campanian Ignimbrite (CI, 39 k-yrs) tuff [59], which behaves as an aquitard.…”

Section: Study Area Descriptionmentioning

confidence: 99%

“…The northern and central sectors are characterized by a phreatic shallow alluvial aquifer and a deep semi-confined one separated by the Campanian Ignimbrite (CI, 39 k-yrs) tuff [59], which behaves as an aquitard. Instead, the southern sector, corresponding to the ancient Sebeto River Valley ( Figures 1 and 2) is characterized by a unique phreatic alluvial aquifer due to the lack of a CI aquitard [58]. This research was focused on the shallow alluvial aquifer extending continuously over the whole study area.…”

Section: Study Area Descriptionmentioning

confidence: 99%

“…This research was focused on the shallow alluvial aquifer extending continuously over the whole study area. At the local scale (Figures 1b and 2), the study area is characterized by an aquifer system [58]. The northern and central sectors are characterized by a phreatic shallow alluvial aquifer and a deep semi-confined one separated by the Campanian Ignimbrite (CI, 39 k-yrs) tuff [59], which behaves as an aquitard.…”

Section: Study Area Descriptionmentioning

confidence: 99%

“…The setting of groundwater circulation is due to the current spatial distribution of piezometric levels that have varied strongly in the last 50 years [58]. During the period between 1950 and 1989, a rapid decline of groundwater levels occurred at the groundwater basin scale due to the overexploitation of groundwater resources for drinking, industrial, and agricultural uses.…”

Section: Study Area Descriptionmentioning

confidence: 99%

“…As an effect of overexploitation, increasingly, deep groundwater has been pumped, causing the decay of its quality due to the rise in nitrates, fluoride, iron, and manganese concentrations beyond the accepted limit for drinking water [60,61]. Therefore, since the beginning of the 1990s, groundwater abstraction for drinking use has been progressively abandoned, causing a groundwater rebound [56] with a rise in piezometric levels in the study area of up to about 16 m, determining the relevant impacts on human activities related to groundwater flooding and ground deformations [58,[62][63][64].…”

Section: Study Area Descriptionmentioning

confidence: 99%

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Quantitative Assessment of Specific Vulnerability to Nitrate Pollution of Shallow Alluvial Aquifers by Process-Based and Empirical Approaches

Fusco

Allocca

Coda

et al. 2020

Water

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Shallow aquifers of coastal and internal alluvial plains of developed countries are commonly characterized by the challenging management of groundwater resources due to the intense agricultural and industrial activities that determine a high risk of groundwater contamination. Among the principal origins of pollution in these areas are agricultural practices based on the amendment of soils by nitrate fertilizers, which have been recognized as one of the most severe environmental emergencies for which specific policies and regulations have been issued (e.g., EU Directive 2006/118/EC). In such a framework, the results of research aimed at assessing the specific vulnerability of shallow alluvial aquifers to nitrate fertilizer pollutants by coupled process-based and empirical approaches are here proposed. The research focused on assessing the specific vulnerability to nitrate pollution of a shallow alluvial aquifer of the Campania region (southern Italy), which was selected due to its representativeness to other recurrent hydrogeological settings occurring in alluvial plains of the region and worldwide. In this area, 1D hydro-stratigraphic models of the unsaturated zone were reconstructed and applied for simulating the transport of nitrate pollutants at the water table and estimating the associated travel times. Numerical modeling was carried out by the finite differences VS2TDI code and considered a 10-year time series of rainfall and evapotranspiration as well as typical local farming practices of nitrate fertilizer input. Results of the travel time calculated for the 1D hydro-stratigraphic models considered and at different depths were recognized as a proxy to assess the specific vulnerability to nitrate fertilizer pollution. Among the principal outcomes is an empirical multiple correlation between the travel time of the nitrate fertilizer pollutant, water table depth, and equivalent saturated hydraulic conductivity of the unsaturated zone or hydraulic resistance, which was used to assess the travel time at the distributed scale over the whole area studied as well as the related specific vulnerability. Given such results, the coupled process-based and empirical approach is proposed as generally applicable for assessing and mapping groundwater vulnerability in shallow aquifers, for which detailed stratigraphic and piezometric data are available.

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Section: Study Area Descriptionmentioning

confidence: 99%

Section: Study Area Descriptionmentioning

confidence: 99%