Environmental Sustainability of Engineering Works: Geological and Geotechnical Aspects

Scarpelli, Giuseppe; Bellezza, I.; Sante, Marta Di; Fratalocchi, Evelina; Fruzzetti, Viviene M. E.; Mazzieri, Francesco; Nanni, Torquato; Pasqualini, Erio; Ruggeri, Paolo; Sakellariadi, Evghenia; Tazioli, Alberto; Vivalda, Paola

doi:10.1007/978-3-030-32762-0_15

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“…This research focuses on the northern part of the Mts. Sibillini domain (Figure 2), for which the hydrogeological boundaries between different systems have never been clearly defined yet [11,37,49]. More in specific, the upper Nera River basin was analysed in this study (Figure 2).…”

Section: Study Areamentioning

confidence: 99%

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The Role of Faults in Groundwater Circulation before and after Seismic Events: Insights from Tracers, Water Isotopes and Geochemistry

Fronzi

Mirabella

Cardellini

et al. 2021

Water

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The interaction between fluids and tectonic structures such as fault systems is a much-discussed issue. Many scientific works are aimed at understanding what the role of fault systems in the displacement of deep fluids is, by investigating the interaction between the upper mantle, the lower crustal portion and the upraising of gasses carried by liquids. Many other scientific works try to explore the interaction between the recharge processes, i.e., precipitation, and the fault zones, aiming to recognize the function of the abovementioned structures and their capability to direct groundwater flow towards preferential drainage areas. Understanding the role of faults in the recharge processes of punctual and linear springs, meant as gaining streams, is a key point in hydrogeology, as it is known that faults can act either as flow barriers or as preferential flow paths. In this work an investigation of a fault system located in the Nera River catchment (Italy), based on geo-structural investigations, tracer tests, geochemical and isotopic recharge modelling, allows to identify the role of the normal fault system before and after the 2016–2017 central Italy seismic sequence (Mmax = 6.5). The outcome was achieved by an integrated approach consisting of a structural geology field work, combined with GIS-based analysis, and of a hydrogeological investigation based on artificial tracer tests and geochemical and isotopic analyses.

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Section: Study Areamentioning

confidence: 99%

“…Figure10. Hydrogeological cross-section (SSE-NNW oriented) modified from[49]. The colors in section refers to the sketch of hydrogeological complexes reported in Figure1.…”

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confidence: 99%