Modelling of the Complex Groundwater Level Dynamics during Episodic Rainfall Events of a Surficial Aquifer in Southern Italy

Pastore, Nicola; Cherubini, Claudia; Doglioni, Angelo; Giasi, Concetta I.; Simeone, Vincenzo

doi:10.3390/w12102916

Cited by 10 publications

(14 citation statements)

References 42 publications

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“…Numerical groundwater modeling is an important tool for effective groundwater management. Based on performing a computer-aided groundwater modeling, the managers can understand the regional flow and hydrogeological condition of the groundwater system, observe and analyze the potentiality of groundwater recharges, and then select optimization scenarios for groundwater abstraction, so that fluctuations in groundwater levels caused by background pumping and climate changes can be better appreciated [10,[14][15][16][17]. Groundwater modeling mainly concerns the flow, head, and mass transport in aquifer systems, but instead does not emphasize the effective control measure for human exploitation of groundwater.…”

Section: Introductionmentioning

confidence: 99%

Groundwater Modelling in Urban Development to Achieve Sustainability of Groundwater Resources: A Case Study of Semarang City, Indonesia

Purnomo

Sarah

et al. 2021

Water

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Since 1900, Semarang City has been meeting its industrial water needs by pumping groundwater through its underlying aquifers. The trend toward exploiting groundwater resources has driven the number of deep wells and their production capacity to increase, and therefore leads to the water table to drop from time to time, which has been marked as one of the primary causes of land subsidence there. The main aim of the current study was to numerically model the temporal and spatial evolution of groundwater table under excess abstraction so that a groundwater management strategy can be accordingly drawn up for ensuing the sustainability of groundwater resources in the future. A series of numerical simulations were carried out to take into account hydrogeological data, artificial and natural discharges of deep wells, and boundary effects in Semarang City. The groundwater modeling is calibrated under two flow conditions of the steady state from 1970 to 1990 and the transient state from 1990 to 2005 for six observation wells distributed in Semarang City. Four scenarios that reflect potential management strategies were developed, and then their effectiveness was systematically investigated. The results of our study indicate that the implementation of proper groundwater control management and measure is able to restore the groundwater level to rise back in Semarang City, and in turn achieve the sustainability of groundwater resources.

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Section: Introductionmentioning

confidence: 99%

Groundwater Modelling in Urban Development to Achieve Sustainability of Groundwater Resources: A Case Study of Semarang City, Indonesia

Purnomo

Sarah

et al. 2021

Water

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“…Similar conceptualization of the shallow Brindisi aquifer can be found in [22]. On the other hand, the observation of the groundwater level at monthly scales may not be adequate to capture the quick response of the groundwater level due to the infiltration of the surface water generated by runoff [13,42]. Groundwater level time series at an hourly scale would be desirable.…”

Section: Discussionmentioning

confidence: 95%

“…According to [46] this value can be referred as the apparent specific yield. For shallow aquifers, a relationship between S y and water table depth can be detectable [13,47,48]. As water table depth decreases, S y decreases from its value equal to the difference between the porosity and the specific retention for a phreatic aquifer.…”

Section: Discussionmentioning

confidence: 99%

“…The integrated hydrological modelling represents a key tool for decision support to improve water resources' management [8][9][10][11][12]. On the other hand, sustainable groundwater management requires a numerical model which is able to represent the whole flow dynamics with small computational costs [13]. For a catchment area, the Soil Moisture Balance (SMB) model at daily scale is a valuable approach to determine the components of the hydrologic cycle [14].…”

Section: Introductionmentioning

confidence: 99%

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Integrated Hydrogeological Modelling for Sustainable Management of the Brindisi Plain Aquifer (Southern Italy)

Pastore

Cherubini

Giasi

2023

Water

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Nowadays, changes in precipitation patterns together with the increasing water demand impose a sustainable management where the budget between water availability and demand is positively closed. A parsimonious hydrogeological modelling approach coupled with a soil water balance is developed and applied in order to quantify the hydrological and hydrogeological dynamics in a semi-arid region of the Mediterranean basin. In particular, the present work focuses on the hydrogeological dynamics of the catchment areas of Siedi, Foggia di Rau, Pigonati, and the Palmarini channels located in the Brindisi Plain, Southern Italy. In the last decades, in the Brindisi Plain the anthropization processes as well as the industrial and agricultural development have generated an intensive exploitation of both shallow and deep groundwater resources as well as their qualitative deterioration. A dry hydrologic year (2019–2020) caused a recharge deficit, resulting in a lowering of the groundwater level of the shallow aquifer compared to the expected seasonal value. The results evidence a sensitive natural system, where the variability of the rainfall regime combined with water withdrawal leads to a system that is very vulnerable to climate change impacts, such as the presence of erratic rainfall patterns affecting aquifer recharge. This study represents the first approach to couple a soil moisture balance model and groundwater flow model to assess the impact of changes in rainfall patterns on groundwater recharge for the Brindisi Plain aquifer. The developed integrated hydrogeological model can be applied to other sites with similar hydrogeological features and represents an important tool in order to evaluate the effectiveness of cost-effective sustainable actions for the management of the groundwater resources with respect to land-use practices and socio-economic aspects.

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“…Even if monitoring the piezometric levels of the aquifer can provide good knowledge of its evolution, boundary conditions can also be highly important; however, they are often poorly described and known. In particular, boundary conditions are referred to as vertical variations of the hydraulic conductivity of the soil [5], anisotropy, particular conditions of groundwater supply, natural or artificial water injection, irrigation, pumping activities, floods, etc.…”

Section: Introductionmentioning

confidence: 99%

Data-Driven Modelling of Water Table Oscillations for a Porous Aquifer Occasionally Flowing under Pressure

Doglioni

Simeone

2021

Geosciences

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Modelling of shallow porous aquifers in scenarios where boundary conditions change over time can be a difficult task. In particular, this is true when data modelling is pursued, i.e., models are directly constructed by measured data. In fact, data contain not only the information related to the physical phenomenon under investigation, but also the effects of time-varying boundary conditions, which work as a disturbance. This undesired component conditions the training of data-driven models, as they are fitted by models, which can produce predictions diverging from measured data. Here, a very shallow porous aquifer is modelled in terms of its response to water table to precipitation. The aquifer is characterized by the presence of a low permeability silty top layer covering the lower sandy strata, where the aquifer normally flows. Therefore, when the piezometric level increases up to the low permeability layer, the aquifer changes its behavior from phreatic to confined. This determines the changing boundary condition, which makes the response of the aquifer to rain precipitations complex, as it is related to a two-fold condition: confined or phreatic. The aquifer here is investigated by two machine learning approaches, the earlier based on an evolutionary modeling, and the latter based on artificial neural networks. Evolutionary modeling returned explicit equations with a fitness efficiency up to 0.8 for 1 month for predictions and 0.48 for simulations, while neural networks arrived at 0.85 and 0.28, respectively. The aim of this study is to get an explicit model of the response of the piezometric heights of the aquifer to the precipitations, which is useful for planning the use of groundwater resources.

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Modelling of the Complex Groundwater Level Dynamics during Episodic Rainfall Events of a Surficial Aquifer in Southern Italy

Cited by 10 publications

References 42 publications

Groundwater Modelling in Urban Development to Achieve Sustainability of Groundwater Resources: A Case Study of Semarang City, Indonesia

Groundwater Modelling in Urban Development to Achieve Sustainability of Groundwater Resources: A Case Study of Semarang City, Indonesia

Integrated Hydrogeological Modelling for Sustainable Management of the Brindisi Plain Aquifer (Southern Italy)

Data-Driven Modelling of Water Table Oscillations for a Porous Aquifer Occasionally Flowing under Pressure

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