Enrico Guastaldi

University of Ferrara

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Tommaso Colonna

University of Ferrara

Ivan Callegari

German University of Technology

Fabio Mantovani

University of Ferrara

Virginia Strati

University of Ferrara

Gerti Xhixha

University of Tirana

Alessio Barbagli

University of Ferrara

Luigi Carmignani

University of Siena

Riccardo Salvini

University of Siena

G. Fiorentini

Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara

Giovanni Massa

University of Salerno

Cooperative Institutions

University of Siena

Istituto Nazionale di Fisica Nucleare

University of Ferrara

Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara

Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro

University of Padua

University of Sassari

Istituto Nazionale di Fisica Nucleare, Sezione di Padova

University of Florence

University of Cagliari

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Total natural radioactivity, Veneto (Italy)

Journal of Maps (2014)

Virginia Strati Marica Baldoncini G. Bezzon C. Broggini G. P. Buso

We present the first detailed map of the terrestrial natural radioactivity of the Veneto Region (Italy), a 18,264 km2 densely populated area, previously investigated through indoor radon surveys. The activity concentration in 709 representative samples of the main Alpine lithostratigraphic units was measured by using a high-purity germanium (HPGe) γ-ray spectrometer to characterize the radioactivity content of the 41 cartographic units of the Veneto Lithostratigraphic map at 1:250,000 scale. An area accounting for 61% of the territory, comprising alluvial plains was investigated through airborne γ-ray measurements. The large-volume NaI detectors were mounted on an ultralight aircraft, flying a 7000 km line. The data were interpolated using Ordinary Kriging, and a distribution model of the radioactivity content was produced. The result of the data analysis is a total natural radioactivity map of Veneto at 1:250,000 scale in which the activity concentration of the territory is visualized in seven classes, according to the percentile values calculated on the total dataset of measurements.

Gamma ray spectrometer

Natural radioactivity

Gamma ray spectrometry

10.1080/17445647.2014.923348

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Citations (24)

Intrinsic vulnerability assessment of Saturnia thermal aquifer by means of three parametric methods: SINTACS, GODS and COP

Environmental Earth Sciences (2014)

Enrico Guastaldi Luca Graziano Giovanni Liali Fabio Nunzio Antonio Brogna Alessio Barbagli

Outcrop

Vulnerability index

10.1007/s12665-014-3191-z

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Citations (25)

Tectonic Setting of the Kenya Rift in the Nakuru Area, Based on Geophysical Prospecting

Geosciences (2021)

Paolo Conti Marco Pistis Stefano Bernardinetti Alessio Barbagli Andrea Zirulia

In this paper, we present results of tectonic and geophysical investigations in the Kenya Rift valley, in the Nakuru area. We compiled a detailed geological map of the area based on published earlier works, well data and satellite imagery. The map was then integrated with original fieldwork and cross sections were constructed. In key areas, we then performed geophysical survey using Electrical Resistivity Tomography (ERT), Hybrid Source Audio MagnetoTelluric (HSAMT), and single station passive seismic measurements (HVSR). In the study area, a volcano-sedimentary succession of the Neogene-Quaternary age characterized by basalts, trachytes, pyroclastic rocks, and tephra with intercalated lacustrine and fluvial deposits crops out. Faulting linked with rift development is evident and occurs throughout the area crosscutting all rock units. We show a rotation of the extension in this portion of the Kenya rift with the NE–SW extension direction of a Neogene-Middle Pleistocene age, followed by the E–W extension direction of an Upper Pleistocene-Present age. Geophysical investigations allowed to outline main lithostratigraphic units and tectonic features at depth and were also useful to infer main cataclasites and fractured rock bodies, the primary paths for water flow in rocks. These investigations are integrated in a larger EU H2020 Programme aimed to produce a geological and hydrogeological model of the area to develop a sustainable water management system.

Neogene

Rift valley

Exploration geophysics

Geologic map

10.3390/geosciences11020080

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Three-dimensional reconstruction of the Carrara Syncline (Apuane Alps, Italy): An approach to reconstruct and control a geological model using only field survey data

Computers & Geosciences (2007)

Andrea Tonini Enrico Guastaldi Marco Meccheri

Syncline

Outcrop

Shapefile

Geological survey

Contour line

Geologic map

10.1016/j.cageo.2007.09.010

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Citations (13)

Prototipo di telerilevamento geologico-strutturale di una porzione del batolite Ercinico della Sardegna

Riccardo Salvini Luigi Carmignani Leonardo Disperati Silvano Ettore Focardi A. Lordo

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Fotogrammetria Digitale e High Resolution Remote Sensing per lo studio multitemporale delle variazioni geomorfologiche e di uso del suolo delle Crete Senesi

Riccardo Salvini Marco Anselmi M. Ticci J Nevini Enrico Guastaldi

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Geological and hydrogeological reconstruction of the main aquifers of the Maltese islands

Hydrogeology Journal (2021)

Alessio Barbagli Enrico Guastaldi Paolo Conti Miriana Giannuzzi Iacopo Borsi

10.1007/s10040-021-02406-z

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Citations (1)

Rilievi DGPS, immagini QuickBird e foto aeree integrati per lo studio dei Geositi della Provincia di Siena

Riccardo Salvini Marco Anselmi M. Ticci Pier Lorenzo Fantozzi Enrico Guastaldi

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External effective dose from natural radiation for the Umbria region (Italy)

Journal of Maps (2022)

Kassandra Giulia Cristina Raptis Matteo Albéri Stefano Bisogno Ivan Callegari Enrico Chiarelli

This study presents the map of the external effective annual dose rate (1:200,000 scale) due to terrestrial and cosmic radiation. The terrestrial dose is assessed via gamma ray spectroscopy combining radiometric data from airborne surveys and laboratory measurements. The geostatistical method Collocated CoKriging is used for the spatial interpolation of the sparse gamma ray data, adopting a high-resolution geological map as ancillary information. The obtained numerical map is integrated with the cosmic radiation effective dose rate calculated using the CARI-7 software tool that considers the effects of altitude, latitude, and the solar magnetic activity cycle. The absorbed dose rate due to radioactivity of the main lithological groups is studied and, for the most populated municipalities, the population-weighted average effective dose is also calculated. For future generations, this map will be a reference tool for evaluating radiological effects in case of accidental events like radioactive fallout or environmental contaminations.

Dose rate

10.1080/17445647.2022.2093659

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Citations (3)

Multivariate Analysis Applied to Aquifer Hydrogeochemical Evaluation: A Case Study in the Coastal Significant Subterranean Water Body between “Cecina River and San Vincenzo”, Tuscany (Italy)

Applied Sciences (2021)

Alessia Bastianoni Enrico Guastaldi Alessio Barbagli Stefano Bernardinetti Andrea Zirulia

The hydrogeochemical characteristics of the significant subterranean water body between “Cecina River and San Vincenzo” (Italy) was evaluated using multivariate statistical analysis methods, like principal component analysis and self-organizing maps (SOMs), with the objective to study the spatiotemporal relationships of the aquifer. The dataset used consisted of the chemical composition of groundwater samples collected between 2010 and 2018 at 16 wells distributed across the whole aquifer. For these wells, all major ions were determined. A self-organizing map of 4 × 8 was constructed to evaluate spatiotemporal changes in the water body. After SOM clustering, we obtained three clusters that successfully grouped all data with similar chemical characteristics. These clusters can be viewed to reflect the presence of three water types: (i) Cluster 1: low salinity/mixed waters; (ii) Cluster 2: high salinity waters; and (iii) Cluster 3: low salinity/fresh waters. Results showed that the major ions had the greater influence over the groundwater chemistry, and the difference in their concentrations allowed the definition of three clusters among the obtained SOM. Temporal changes in cluster assignment were only observed in two wells, located in areas more susceptible to changes in the water table levels, and therefore, hydrodynamic conditions. The result of the SOM clustering was also displayed using the classical hydrochemical approach of the Piper plot. It was observed that these changes were not as easily identified when the raw data were used. The spatial display of the clustering results, allowed the evaluation in a hydrogeological context in a quick and cost-effective way. Thus, our approach can be used to quickly analyze large datasets, suggest recharge areas, and recognize spatiotemporal patterns.

10.3390/app11167595

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Citations (8)