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Fabbri, Paolo

doi:10.1023/a:1011030900322

Cited by 18 publications

(4 citation statements)

References 7 publications

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“…Because of the natural, social, and economic relevance of this thermal resource, several studies have been carried out since the eighteenth century (Mandruzzato, 1789). Prior studies have investigated the geochemical features of the thermal waters (Gherardi et al, 2000;Mayer et al, 2015;Norton & Panichi, 1978) and the geological, hydrogeological, and thermal settings of the EuGF (Antonelli et al, 1993;Fabbri, 1997Fabbri, , 2001Fabbri & Trevisani, 2005;Pola et al, 2016). Conversely, a proper regional geological and hydrogeological reconstruction of the Veneto subsurface is lacking.…”

Section: Introductionmentioning

confidence: 99%

Fault Control on a Thermal Anomaly: Conceptual and Numerical Modeling of a Low‐Temperature Geothermal System in the Southern Alps Foreland Basin (NE Italy)

et al. 2020

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The interest on low‐temperature geothermal resources is progressively increasing since their renewability and widespread availability. Despite their frequency, these resources and their development have been only partially investigated. This paper unravels the major physical processes driving a low‐temperature geothermal resource in NE Italy (Euganean Geothermal System) through conceptual and numerical modeling. Dense fracturing associated to regional fault zones and a relay ramp enhances regional to local flow of thermal waters. Their rapid upwelling in the Euganean Geothermal Field is favored by open extensional fractures deforming the relay ramp. The water (65–86 °C) is intensively exploited for balneotherapy, rendering it a profitable resource. Three‐dimensional coupled flow and heat transport numerical simulations based on this conceptual model are performed. Despite the presence of a uniform basal heat flow, a thermal anomaly corresponding to field observations develops in the modeling domain reproducing the relay ramp. Intensive fracturing extending across a wide area and a slightly anomalous heat flow favors a local increase in convection that drives the upwelling of deep‐seated hot waters. The simulations corroborate and refine the conceptual model, revealing that water of up to 115 °C is likely to be found in the unexplored part of the thermal field. This study furthers knowledge on fault‐controlled low‐temperature geothermal resources where the geological setting could enhance local convection without anomalous heat flows, creating temperatures favorable for energy production. Conceptual and numerical modeling based on solid geological and hydrogeological reconstructions can offer a support tool for further detailed explorations of these prominent resources.

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Section: Introductionmentioning

confidence: 99%

Fault Control on a Thermal Anomaly: Conceptual and Numerical Modeling of a Low‐Temperature Geothermal System in the Southern Alps Foreland Basin (NE Italy)

et al. 2020

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“…1 ), while the exploitation area consists of a band of 25 km 2 located southwest of Padua known as the Euganean Geothermal Field (EuGF). Approximately 170 wells are currently active and extract approximately 15 M m 3 of thermal waters per year with temperatures ranging from 63 to 87 °C (Fabbri, 2001 ; Fabbri & Trevisani, 2005 ). Thermal waters are mainly used for therapeutic purposes and feed spas located in the municipalities of Abano Terme, Montegrotto Terme, Galzignano Terme, and Battaglia Terme (Fig.…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling as a tool for evaluating the renewability of geothermal resources: the case study of the Euganean Geothermal System (NE Italy)

Torresan

Piccinini

Cacace

et al. 2021

Environ Geochem Health

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Renewable natural resources are strategic for reducing greenhouse gas emissions and the human footprint. The renewability of these resources is a crucial aspect that should be evaluated in utilization of scenario planning. The renewability of geothermal resources is strictly related to the physical and geological processes that favor water circulation and heating. In the Veneto region (NE Italy), thermal waters of the Euganean Geothermal System are the most profitable regional geothermal resource, and its renewability assessment entails the evaluation of fluid and heat recharge, regional and local geological settings, and physical processes controlling system development. This renewability assessment is aimed at defining both the importance of such components and the resource amount that can be exploited without compromising its future preservation. In the second part of the twentieth century, the Euganean thermal resource was threatened by severe overexploitation that caused a sharp decrease in the potentiometric level of the thermal aquifers. Consequently, regulation for their exploitation is required. In this work, the renewability of the Euganean Geothermal System was assessed using the results from numerical simulations of fluid flow and heat transport. The simulations were based on a detailed hydrogeological reconstruction that reproduced major regional geological heterogeneities through a 3D unstructured mesh, while a heterogeneous permeability field was used to reproduce the local fracturing of the thermal aquifers. The model results highlight the role played by the resolved structural elements, in particular the subsurface high-angle faults of the exploitation field, and by the anomalous regional crustal heat flow affecting the central Veneto region.

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“…Subsequently, the decrease in exploitation in the 1990s allowed the recovery of the potentiometric level up to a few meters below the ground level. This recovery was due to a reduction in the water demand by the tourism industry and to the regulation of the extracted volumes imposed by the Veneto Region administration (Fabbri, 2001;Fabbri et al 2017;Fabbri and Trevisani 2005;Pola et al 2015a). The utilization of reinjection wells for re-establishing the natural condition of the system (Diaz et al 2016;Kaya et al 2011;Limberger et al 2018) was excluded due to (i) the peculiar hydrogeological settings of the EuGF and (ii) the high density of pumping wells.…”

Section: Introductionmentioning

confidence: 99%

3D hydrogeological reconstruction of the fault-controlled Euganean Geothermal System (NE Italy)

Torresan

Piccinini

Pola

et al. 2020

Engineering Geology

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Cited by 18 publications

References 7 publications

Fault Control on a Thermal Anomaly: Conceptual and Numerical Modeling of a Low‐Temperature Geothermal System in the Southern Alps Foreland Basin (NE Italy)

Fault Control on a Thermal Anomaly: Conceptual and Numerical Modeling of a Low‐Temperature Geothermal System in the Southern Alps Foreland Basin (NE Italy)

Numerical modeling as a tool for evaluating the renewability of geothermal resources: the case study of the Euganean Geothermal System (NE Italy)

3D hydrogeological reconstruction of the fault-controlled Euganean Geothermal System (NE Italy)

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