P. Frattini

P. Frattini
Università degli Studi di Milano-Bicocca | UNIMIB · Department of Earth and Environmental Sciences

PhD

About

172
Publications
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Publications

Publications (172)
Article
The quantification of rock glacier dynamics has gained increasing importance in recent years. In this study, the spatial and temporal flow patterns of perennially frozen debris in the active Gran Sometta rock glacier (Western Italian Alps) were investigated with repeated Unmanned Aerial Vehicle (UAV) surveys (2016–2019), Global Navigation Satellite...
Conference Paper
Il presente lavoro sintetizza le recenti attività di supporto all’Agenzia per la Protezione del Patrimonio della Georgia per l’analisi e la mitigazione dei fenomeni di instabilità che affliggono i monasteri rupestri della nazione. Più nello specifico, vengono presentati i risultati delle campagne di indagine degli ultimi due anni (giugno 2017 – nov...
Article
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The risk management of rainfall-induced landslides requires reliable rainfall thresholds to issue early warning alerts. The practical application of these thresholds often leads to misclassifications, either false negative or false positive, which induce costs for the society. Since missed-alarm (false negative) and false-alarm (false positive) cos...
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Growing and uncontrolled urbanization and climate change (with an associated increase in the frequency of intense meteoric events) have led to a rising number of flooding events in urban areas due to the insufficient capacity of conventional drainage systems. Nature-Based Solutions represent a contribution to addressing these problems through the c...
Article
Natural gas in clathrate hydrates is regarded as a potential energy source that has received increased attention to optimize production strategies with controllable impacts on the environment. This paper investigates possible instability of a gently sloping reservoir of oceanic hydrates induced by gas production using the huff-puff method through a...
Conference Paper
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Earthquakes are – amongst many others – one type of triggering factors for mass movements in mountainous regions such as landslides, deep-seated gravitational slides (DSGSD), rockfalls, mudflows, etc. Hence, the emerging hazard would require an area-wide assessment of seismogenic impact to better apprehend the interplay of different triggering fact...
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Large slow rock-slope deformations, including deep-seated gravitational slope deformations and large landslides, are widespread in alpine environments. They develop over thousands of years by progressive failure, resulting in slow movements that impact infrastructures and can eventually evolve into catastrophic rockslides. A robust characterization...
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The 7.8 M w earthquake that struck Nepal on April 25th, 2015 triggered over 21,000 landslides over an area of more than 25,000 km ² . These landslides contributed to mass wasting, partially compensating the tectonic uplift by the earthquake. In this paper we quantify the volume balance resulting from the 2015 earthquake uplift (or subsidence) and l...
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A multi-criteria risk analysis to identify and to rank the most critical UNESCO World Heritage Sites (WHSs) in Europe was implemented in the framework of the JPI-CH PROTHEGO project. The presented approach considers three natural geo-hazards (i.e. landsliding, seismic shaking and volcanic activity) for which homogenous European hazard maps are avai...
Chapter
The present paper describes the recent support activities implemented during the fall of 2018 in the David Gareja monastery complex area (South-eastern Georgia). During last decades, the growing cultural interest in the Georgian rock hewn monasteries founded in the sixth century has been constantly accompanied by conservation and management problem...
Chapter
The exploration of the solar system has shown that mass movement is a common process on the surface of the terrestrial planets (Mercury, Venus, Mars) and on many moons, including our own. However, it is on Mars that mass movements represent a major geomorphologic force both in terms of frequency, volume (often greater than 10 km³, with a record vol...
Article
The aim of this paper is to achieve a quantitative assessment of rockfall protection forest efficiency at regional scale, considering site specific forest, morphological and lithological parameters. At first, a semi-automatic GIS-based method, integrated with a multi-scenario 3D-rockfall model realized by using the simulation code HY-STONE, was use...
Article
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Study region The Milan metropolitan area lies on one of the most important aquifer in Italy, heavily exploited for public and industrial water supply. The area, covering 3135 km² in the Po Plain (Northern Italy) with a continental climate, is bounded by the Po, the Adda and the Ticino rivers and by the prealpine foothills. Regional hydrology is cha...
Article
Purpose Aim of this paper is to evaluate the reliability of UNESCO Periodic Reports for the assessment of hazards affecting the UNESCO world heritage sites (WHSs) and to rank the most critical WHSs in Europe through multicriteria analysis. Design/methodology/approach The Periodic Reports represent the available continental-scale knowledge on hazar...
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The growing urban development in mountain areas together with climate change increased the need for rockfall research and modeling. Determining rockfall processes and related hazard is still a difficult task because of the complexity and intrinsic stochastic nature of the physics involved. In recent years, numerical simulations of rockfall trajecto...
Conference Paper
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Milan has always been considered a city of water due to the presence of a network of natural and man-made canals, lying on one of the most important Italian aquifer system which has been heavily exploited for public and industrial supply, but the future use of this resource still has to be decided. The rate of abstraction decreased of more than 30%...
Article
Landslide size controls the destructive power of landslides and is related to the frequency of occurrence, with larger landslides being less frequent than smaller ones. For this reason, the analysis of landslide size is essential for landslide hazard assessment. We analyse six earthquake-induced landslide inventories with earthquake magnitude rangi...
Conference Paper
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PROTHEGO (PROTection of European Cultural HEritage from GeO-hazards) utilized novel space technology to monitor surface deformation with mm precision to analyze the impact of geohazards in cultural heritage sites in Europe. The project, which took place over 30 months, included the 395 monuments of UNESCO in Europe to monitor geohazards, with case...
Conference Paper
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Located in the District of Larnaka, about 6 km from the southern coast of Cyprus, the Neolithic settlement of Choirokoitia lies on a hill partly enclosed in a loop of the Maroni River. Occupied from the 7th to the 5th millennium B.C., the village covers an area of approximately 3 ha and is one of the most important prehistoric sites in the eastern...
Conference Paper
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The Ligurian coast between Cinque Terre and Portovenere is a UNESCO cultural landscape site. Human settlement in this region over the past millennium have been developed by shaping a steep, uneven terrain, which is highly prone to landsliding. Rockfalls, shallow landslides, debris flows and deep-seated landslides have seriously affected the site du...
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Landslides have been observed in different terrestrial environments and also on planets, satellites, and asteroids. Long runout landslides are strongly dependent on the initial mass position, material and slope path properties, topographic relief, and presence of volatiles. Therefore, landslides represent a means for the description of rock propert...
Article
Large landslides and deep-seated gravitational slope deformations (DSGSD) represent an important geo-hazard in relation to the deformation of large structures and infrastructures and to the associated secondary landslides. DSGSD movements, although slow (from a few millimetres to several centimetres per year), can continue for very long periods, pr...
Article
Rainfall-induced landslides can result from different soil failure mechanisms each leading to slope instabilities characterized by varying times and depths of occurrence. This paper discusses the performance of a physically-based model for the spatially-distributed analysis of landslide susceptibility. The model allows the simultaneous assessment o...
Conference Paper
A magnitude 7.8 earthquake struck Nepal on April 25, 2015 triggering several thousands of landslides and causing widespread damages to mountain villages and the evacuation of thousands of people. This contribution describes landslide susceptibility analysis performed in the Dhading (1885 km²), Sindhupalchok (2488 km²), Rasuwa (1522 km²) and Nuwakot...
Conference Paper
Open image in new window Landslides in Italy are extremely frequent and cause a high number of casualties and damage to structures and infrastructures. A landslides database has been developed through the Google Alert’s service from January 2012 to December 2015. In total, 10947 notifications have been received, read and analyzed, allowing to creat...
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Thermal springs are widespread in the European Alps, with hundreds of geothermal sites known and exploited. The thermal circulation and fluid outflows were examined in the area around Bormio (Central Italian Alps), where ten geothermal springs discharge from dolomite bodies located close to the regional Zebrù thrust. Water is heated in deep circula...
Conference Paper
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A GIS-based multi-criteria analysis has been implemented to identify and to rank the most critical UNESCO Heritage sites at the European scale in the context of PROTHEGO JPI-Project. Two multi-criteria methods have been tested and applied to more than 300 European UNESCO Sites. First, the Analytic Hierarchy Procedure (AHP) was applied to the data o...
Article
Although aquifers in densely populated and industrialized areas are extremely valuable and sensitive to contamination, an estimate of the groundwater quality status relative to baseline conditions is lacking for many of them. This paper provides a hydrogeochemical characterization of the groundwater in the Milan metropolitan area, one of the most d...
Presentation
Full-text available
Multi-scale approach for 3D hydrostratigraphic and groundwater flow modelling of Milan (Northern Italy) urban aquifers
Article
The characterization of landslide magnitude is essential for landslide hazard assessment. The magnitude of landslide controls its destructive power and it is related to the frequency of occurrence, with larger landslides being less frequent than smaller ones. We analyse five earthquake-induced landslide inventories (Papua New Guinea, 1993; Northrid...
Conference Paper
Full-text available
Examining natural hazards responsible for cultural heritage damages all over Europe, especially over large or remote areas is extremely difficult, expensive and time consuming. There is a need identify and respond to natural hazards before they create irreparable damage to cultural heritage sites. The PROTHEGO project uses radar interferometry to m...
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Cappadocia is one of the most important natural, historical and cultural heritages of Turkey. The region is seriously threatened by different instability problems, and several locations were accordingly closed to visit, mainly because of rockfalls. The aim of current study is to investigate the rockfall hazard potential near the Tatlarin Undergroun...
Conference Paper
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Tangible cultural heritage includes various categories of monuments and sites, from cultural landscapes and sacred sites to archaeological complexes, individual architectural or artistic monuments and historic urban centers. Such places are continuously impacted and weathered by several internal and external factors, both natural and human-induced,...
Article
Rock avalanches are large flow-like movements of fragmented rock that can cause extensive and rapid topographic changes, for which very few quantitative data are available. This paper analyses the geomorphological and hydrological impact of the 3 million m3 Thurwieser rock avalanche (2004, Italian Central Alps) by using Terrestrial Laser Scanner, a...
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Monthly wildfire burned area frequency is here modeled with a power law distribution and scaling exponent across different European biomes are estimated. Data sets, spanning from 2000 to 2009, comprehend the inventory of monthly burned areas from the European Forest Fire Information System (EFFIS) and simulated monthly burned areas from a recent pa...
Conference Paper
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This paper reports the main results of a project developed in cooperation with National Agency for Cultural Heritage Preservation of Georgia, and aimed at envisaging the stability conditions of the Vardzia Monastery slope (rupestrian rock cut city cave in the southwestern Georgia). The site has always been affected by instability processes along th...
Conference Paper
A 600MW hydropower plant consisting in more than 12.000 m of penstocks, tunnels, and an underground cavern is under project in the karst area surroundings the municipality of Pontelandolfo and Campolattaro (Campania - South Italy; REC LTD). Understanding the relationships between main infrastructures of the project and hydrogeologic settings is of...
Article
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To model the temporal evolution of complex landslides, a 1D pseudo-dynamic visco-plastic approach, based on Perzyna's theory, has been conceived. In the original version of the model the viscous nucleus has been assumed to be bi-linear: irreversible deformations develop uniquely for positive yield function values whereas, in a more general case, ev...
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High arsenic (As) concentrations (up to 230 μg/L) have been historically observed (since 1999) in the upper Valtellina valley groundwater (UVV, central Italian Alps), and measured in samples collected during four campaigns of one full hydrological year (summer 2012–summer 2013). During these campaigns, water has been collected from both cold spring...
Chapter
The Feifeng Mountain tourist resort is famous for the ancient caves and drifting activities along the Yongan River. Because of steep slope, lithology (tuff overlying a thick soft layer), tectonic structure, and the underground excavation in ancient times, the area is seriously affected by rockfalls. A quantitative rockfall individual risk assessmen...
Conference Paper
Full-text available
The prediction of landslide displacements is an important issue for the management of areas characterized by a high susceptibility to geomorphological hazards. The increased availability of monitoring data, like inclinometric measures, piezometric levels, encourages the development of prediction techniques and among these the use of data-driven mod...
Article
Tracer tests often give ambiguous interpretations that may be due to the erroneous location of sampling points and/or the lack of flow rate measurements through the sampler. To obtain more reliable tracer test results, we propose a methodology that optimizes the design and analysis of tracer tests in a cross borehole mode by using vertical borehole...
Article
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Early warning systems (EWSs) rely on the capacity to forecast a dangerous event with a certain amount of advance by defining warning criteria on which the safety of the population will depend. Monitoring of landslides is facilitated by new technologies, decreasing prices and easier data processing. At the same time, predicting the onset of a rapid...
Article
This paper reports preliminary results of a feasibility project developed in cooperation with National Agency for Cultural Heritage Preservation of Georgia, and aimed at envisaging the stability conditions of the Vardzia monastery slope (rupestrian city cave in the south-western Georgia). The aim is the implementation of a low-impact monitoring sys...
Chapter
Full-text available
Rockfalls pose a significant threat to life and property, thus rockfall protection is a major issue in areas exposed to severe rockfall hazard. Rockfall protection approaches include quantitative rockfall hazard and risk assessment, as well as the design of structural countermeasures. These require a sound and robust quantification of 3D rockfall t...
Article
During the last decade, a large rockslide along the NW slope of the Mont de la Saxe (Courmayeur, AO—Italy) showed a significant increase in the rate of activity in conjunction with snow melting periods and more recently with important amount of rainfall. The ca 8 mm3 rockslide affects a heavily tectonised and intensely fractured mass of black schis...
Article
We present an analysis of rockfall risk for people passing along the national road below a hazardous rocky cliff. First, we assessed the probability of loss of life at the location where a deadly accident occurred in 2011. This risk is very low, and acceptable in terms of individual risk. Then, we calculated the potential loss of life (i.e., the ex...
Article
A calibration of rockfall propagation model based on a full-scale test performed in the Richmond Hill area after the 2011 Christchurch earthquake is presented. Two quantitative accuracy measures have been used to guide the calibration process: (1) the mean distance between the location of arrest of actual blocks and the location of all simulated bl...
Article
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Giant rock avalanches have been recognized and mapped in southern Peru, to the N of Tacna. The Cerro Caquilluco rock avalanche complex has a total volume of about 15 km3 and a length of 43 km, extending from 3,900 to 530 m a.s.l. Mapping the internal structures, the scar features and the depositional lobes allowed to suggest that the rock avalanche...
Article
The recently presented SqueeSARTM technique for SAR interferometry was applied to study the activity of 237 DSGSDs located in the Central European Alps. The analysis of displacement rates within each DSGSD suggests that 90 % of these instability phenomena are active. Considering the huge volume involved in these phenomena, we conclude that DSGSDs c...
Article
We test the integration of ground-penetrating radar (GPR) borehole investigation and electromagnetic flowmeter surveys to characterize fissured or complex aquifers. Borehole GPR investigation allows assessment of the lateral continuity of the porous and permeable zones between closely spaced boreholes, whereas flowmeter tests are adopted to identif...
Article
Full-text available
Rockslides in alpine areas can reach large volumes and, owing to their position along slopes, can either undergo large and rapid evolution originating large rock avalanches or can decelerate and stabilize. As a consequence, in particular when located within large deep-seated deformations, this type of instability requires accurate observation and m...
Conference Paper
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The rock-cut city of Vardzia is a cave monastery site in south-western Georgia, excavated from the slopes of the Erusheti mountain on the left bank of the Mtkvari River. The main period of construction was the second half of the twelfth century. The caves stretch along the cliff for some eight hundred meters and up to fifty meters within the rocky...
Conference Paper
The Mont de La Saxe rockslide (Courmayeur, Aosta Valley, Italy) is presently one of the most hazardous landslides in Northern Italy. Due to increasing activity in the last 5 years, the rockslide has been extensively investigated and monitored. We present topographic monitoring through ALS-LiDAR and TLS (Terrestrial Laser Scanning) surveys. This ana...
Conference Paper
Full-text available
Cappadocia is one of the most important touristic sites in Turkey due to its spectacular and unique landforms, fairy chimneys, underground cities and historical heritages. Tatlarin underground city is one of the many rock-cut structures of Cappadocia. The Cappadocia Region mainly consists of Pre-Miocene basement rocks, Lower Miocene sedimentary roc...