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Special Issue 2021 - AIGA - VII National Congress - Lecco 2021

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Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
Groundwater or surface water flow into natural rock formations containing asbestos (NOA), e.g. serpentinites and metabasites, may result in water asbestos pollution. In fact, asbestos-bearing rocks weathering is the principal natural cause of fibres water-dispersion. As asbestos constitute a risk to human health, it is crucial, into NOA contexts, to verify the occurrence of mineral fibres in water resources, given their importance for agricultural and industrial activities and as a primary s
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
The research focuses on the instability phenomena occurring on the eastern edge of the Calabria Coastal Range using geological and geomorphological investigations,geognostic surveys and InSAR remote sensing technique. The study area is located in Cosenza province (Calabria, south Italy) and includes Cavallerizzo, Cerzeto, San Martino di Finita and Rota Greca villages. The geological setting is dominated by a variety of metamorphic-crystalline rocks constituting the Coastal Range structure. A normal fault, N
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
The paper deals with the idea, design and implementation of unconventional one-of-a-kind Micropiles Tripods Shields (MTS) intended to break and decelerate moderately rapid earthflows surges in the track zone of the Sassi Neri landslide (Nure Valley, Northern Apennines, Province of Piacenza, Italy). The MTS are inspired to floating anchors and “chevaux de fries” used in wartime. The basic elements are tripods of 193 mm diameter steel micropiles laid out at triangle, driven into the stable b
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
The note deals with a new tool implementation for evaluating Sediment Delivery Ratio (SDR) in a river basin, through GRASS GIS software. The definition of a spatially distributed value of SDR is a very important task as the sediment routing can affects losses of soil productivity, increase of solid transport in stream channels, and water quality degradation. For such reason the SDR evaluation, coupled with GIS approach, has been extensively used in scientific literature. Geographic information
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
Landslide susceptibility analysis based on the assessment of a quantitative relationship between multiple controlling factors and landslide occurrence is a consolidated approach for land-use planning in risk mitigation. The Zagros Mountain range (Iran) is one of the most spectacular examples of a landscape whose evolution has been controlled by the erosion of rock outcrops and the growth of thrust-fold structures (predisposing factors for gravity-driven deformations). This paper covers a pre
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
In the Daunia Sub-Apennine (Apulia, southern Italy) slope instability processes due to rainfalls and earthquakes are widespread and cause significant damage to buildings and other structures, and, in some cases, loss of life. A detailed slope stability assessment requires information on the predisposing and triggering factors, and a good knowledge of the geological and environmental conditions as well. As concerns seismicinduced landslides, conventional methods used for slope stability analys
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
The town of San Leo, situated in the northern Apennines of Italy, is subject to slope instability phenomena due to its geological/structural setting. The 3D geological model of the eastern sector of the San Leo rocky plateau has been developed through the integration of data obtained from laser scanning and digital photogrammetric surveys along with core drilling geomechanical analysis. The geological features have been integrated into one single model that enables the visualization of all s
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
Rockfalls are a major hazard for human activities, especially in proximity of infrastructures. The steps in the analysis of rockfalls may include: i) the survey and characterization of rock outcrops, ii) the kinematic assessment and engineering classification of rock masses, ii) stability analysis and rockfall simulations. This research aims to present a toolbox for rockfall hazard studies and risk mitigation. The toolbox has been created combining the existing methods of survey and analysis and new and i
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
Open-loop groundwater heat pumps (GWHP) currently represent one of the most energy-efficient and environmentally friendly air-conditioning systems for densely urbanised areas. Depending on the use mode, energy can be extracted or injected into a shallow aquifer. Among the technical aspects associated with GWHPs that need to be constantly controlled, there is the development of a thermally affected zone (TAZ) around injection points. The environmental impact extent is strongly influenced by t
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
Optical fibre-based monitoring has settled in the field of geohazards monitoring. Interferometric optical fibre sensors are the least used in landslide monitoring, while classical approaches rely on Fibre Bragg Grating and Brillouin Optical Time Domain Reflectometry/Analysis. Landslide monitoring goes hand by hand with the development of technology. While authors tend to focus on the unprecedented accuracy and reduced costs of the sensor itself, the economic and practical aspects related to the interrogatin
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
The sensing applications nowadays are always more used for structural and engineering-geological applications. In this work, an experimental monitoring system of an underground marble quarry, located in the Apuan Alps (Tuscany, Italy) is presented. The system is composed by Distributed Optical Fiber Sensors (DOFS) based on Brillouin Frequency Shift (BFS). By using a control unit, multitemporal data of strain and temperature were measured thanks to the installation of 250 linear meters of DOFS placed arou
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
Abstract An active fault is defined capable (FAC) when, in fact, it is capable of offsetting the ground surface; while a seismogenic source (SS) is a tectonic structure that generates earthquakes and, under certain conditions, displaces the ground when the deep coseismic rupture propagates up to the surface. Therefore, the FACs may be considered as the surficial expression of SSs. The seismic sequences of central Italy in 2009 and 2016-2017 showed the importance to define and locate “in adv
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
In the Metaponto coastal plain (Basilicata region, southern Italy), the anthropogenic impact, mainly linked to agriculture and tourism, has significantly modified the land use and threatened the groundwater quality over the last century. Five protected sites located near the river mouths are included in the Natura 2000 network thanks to the high ecological value of their flora and fauna. The reduction of the groundwater flow, probably caused by the construction of dams and reservoirs for water
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
Large deep-seated gravitational slope deformation (DsGSD) are slope instability phenomena affecting high relief-energy hillslopes and characterized by a high degree of complexity, enhanced also by wideness of the affected area and lithological heterogeneity. A combined approach based on different remote survey methodologies is herein presented with the aim of characterizing one of the most relevant DsGSDs in Sicily (Italy). The Scopello landslide involves the external margin of an overthrust
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
The understanding of the transport and degradation phenomena of chlorinated ethenes in fractured aquifers as well as the assessment of the cleanup times poses an extreme technical challenge. In the present study a method to analyze reactive transport and reductive dechlorination of chlorinated solvents in fractured aquifers is presented. Reductive dechlorination pathway, adsorption processes, mass exchange phenomena between mobile and stagnant zones as well as the non – linear flow behavio
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
This study deals with both the engineering-geological and kinematic characterization of the Fontane landslide based on geological and geophysical field investigations and on geotechnical monitoring campaigns. The coupled analysis of stratigraphic boreholes and of seismic refraction tomography profiles allowed to constrain the geometry of the landslide body. The outcomes showed that the thickness of the landslide deposit is extremely variable laterally. This observation suggested a complex mo
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
Accurate estimates of spatial and temporal distribution of groundwater recharge are of utmost importance to protect groundwater systems. In coastal areas, the fragility of the systems makes such estimates critical for the correct management and protection of water resources from saltwater intrusion. The Muravera coastal plain, in the south-eastern Sardinia, has been studied since 1960, due to important saltwater intrusion phenomena. Since the early fifties, the natural hydrodynamic equilibri
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
The present research is devoted to contributing on the characterization of the low-to-medium enthalpy geothermal resources existing in the broader Ferrara-Modena territory, Northern Italy. To achieve the goal, first, we analysed temperature data in selected deep boreholes to estimate the local thermophysical parameters of the underground. In order to discriminate the influence of the circulation fluids and then estimate the real temperature values of the surrounding rocks, we applied differe
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
Landslide susceptibility maps (LSM) define the spatial probability of landslide occurrence based on the spatial distribution of predisposing factors. In this work, a LSM is produced for Norther Tuscany (3100 km2 ) with a Random Forest algorithm. The element of novelty is the use, besides 15 state-ofthe-art parameters, of some newly proposed parameters. Starting from the national soil sealing map updated yearly by ISPRA, we derived a parameter accounting for the degree of human interference on
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
Landslides in pyroclastic soils are among the most calamitous natural phenomena causing damage to people and territory every year. The mechanisms underpinning such landslides can be controlled by multiple factors, including site conditions and features of pyroclastic soils. Spatial variations of textural characteristics and related hydro-mechanical features in the overlain pyroclastic layers can yield to relevant effects on water infiltration, with potential formation of capillary barriers at
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
In the Po plain, intensive agriculture is supported by large irrigation volumes and use of fertilizers. We analysed the effects of different land usesin a sector of the Mincio River on groundwater hydrochemical characteristics and hypothesized local regulation of NO3- contamination. In the unconfined coarse-grained alluvial aquifer, hydraulic heads were measured monthly in 17 wells from May 2019 to December 2019, to trace how the aquifer recharge and manure spreading influence groundwater physico-chemical p
Special Issue 2021 - AIGA - VII National Congress - Lecco 2021
This work is focused on the study of recurrent debris flow events on the north-facing mountain slope of the Bulgheria massif (Cilento Unesco Geopark, southern Italy). These phenomena pose a threat for at least two villages and infrastructures on the lower slope. The main morpho-structure of the mountain slope is strongly controlled by the tectonic overlapping in form of multiple thrust-folding of the Meso-Cenozoic limestone related to the inner margin of the Apennine Carbonate Platform over lo
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