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[EN] The Melogno pass ("Colle del Melogno") is located at 1026 m above sea level, between the high Val Bormida and the hinterland of the Finalese (province of Savona) and is one of the highest mountain passes in the Ligurian Alps. In ancient times, this zone was considered strategically important from the military point of view since it is located at the crossroads of many communication routes. In these areas, in November 1795, during the "Battle of Loano", the French army, commanded by Andrea Massena and the allied army of Austria, prevailed over the Kingdom of Sardinia, led by Oliver Remigius von Wallis. However, the territory remained possession of the Kingdom of Sardinia and, between 1883 and 1895, the worsening of relations with France induced the government to erect, near the pass, three imposing fortifications (Tortagna, Settepani and Centrale) to prevent an entry into Piedmont by armies coming from the coast. For the same purpose other fortifications were erected near the passes of Tenda, Nava, Turchino and near the villages of Zuccarello, Altare and Vado. The most impressive among the three fortifications of Melogno pass is the Central Fort. It occupies all the saddle of the pass and it is crossed by the provincial road 490 connecting the coast of Finale Ligure to Piedmont. The fort, still of military property, is a listed historical artefact. It has a polygonal shape, with a main barrack developed on two floors. Four defensive and attacking emplacements were located outside the main complex, along a detached hill, with heavy artillery pointed towards the coast. The study will examine the natural and artificial stone materials used for the building through mineralogical and petrographic analysis and will verify both the variations occurred during the construction phases and the relations with the local supply sources. ; Fratini, F.; Mattone, M.; Rescic, S. (2020). The building materials of "Colle del Melogno" Central Fort (Liguria, Italy). Editorial Universitat Politècnica de València. 1493-1500. ...

Abstract. The Liguria coastal region in Italy was affected by two heavy rainfall episodes and subsequent severe flooding that occurred at the end of October and the beginning of November 2011. In both cases, the very large accumulated precipitation maxima were associated with intense and quasi-stationary convective systems that developed near the coast, both related to orographic lift and similar low-level mesoscale flow patterns over the Ligurian Sea, giving rise to pronounced convergence lines. This study aims at analysing the main dynamical processes responsible for the onset, lifecycle, intensity and localisation/propagation of the precipitating systems, using the ISAC convection-permitting model MOLOCH applied at different spatial resolutions and comparing model output fields with available observations. The ability of the model in quantitative precipitation forecasting (QPF) is tested with respect to initial conditions and model horizontal resolution. Although precipitation maxima remain underestimated in the model experiments, it is shown that errors in QPF in both amount and position tend to decrease with increasing grid resolution. It is shown that model accuracy in forecasting rainfall amounts and localisation of the precipitating systems critically depends on the ability to represent the cold air outflow from the Po Valley to the Ligurian Sea, which determines the position and intensity of the mesoscale convergence lines over the sea. Such convergence lines controls, together with the lifting produced by the Apennines chain surrounding the coast, the onset of the severe convection.

The contribution analysis the effects of digital transformation, provides a critical assessment of the policies on e-government in Europe and in Italy, and draft a research agenda focused on Liguria Region. The article moves from the need to conduct research aimed at analyzing the change in the relations between subject and institution in contemporary western societies. The article, focusing on official documents, explores the strategies of digital transformation adopted by the EU. Liguria is a case study of interest because, starting from the 2016-2018 Digital Strategic Program, has adopted a strong focus on the principles of Open Government and an explicit decision to invest in specific digital services for citizens and businesses. ; El artículo analiza los efectos de la transformación digital, ofrece una evaluación crítica de las políticas de gobierno electrónico en Europa y en Italia, y presenta una agenda de investigación centrada en la región de Liguria. El artículo parte de la necesidad de llevar a cabo una investigación destinada a analizar el cambio en las relaciones entre sujeto e institución en las sociedades occidentales contemporáneas. El artículo, que se centra en documentos oficiales, explora las estrategias de transformación digital adoptadas por la UE. Liguria es un caso de estudio de interés porque, a partir del Programa Estratégico Digital 2016-2018, ha adoptado un fuerte enfoque en los principios de Open Government y una decisión explícita de invertir en servicios digitales específicos para ciudadanos y empresas.

El artículo analiza los efectos de la transformación digital, ofrece una evaluación crítica de las políticas de gobierno electrónico en Europa y en Italia, y presenta una agenda de investigación centrada en la región de Liguria. El artículo parte de la necesidad de llevar a cabo una investigación destinada a analizar el cambio en las relaciones entre sujeto e institución en las sociedades occidentales contemporáneas. El artículo, que se centra en documentos oficiales, explora las estrategias de transformación digital adoptadas por la UE. Liguria es un caso de estudio de interés porque, a partir del Programa Estratégico Digital 2016-2018, ha adoptado un fuerte enfoque en los principios de Open Government y una decisión explícita de invertir en servicios digitales específicos para ciudadanos y empresas. ; The contribution analysis the effects of digital transformation, provides a critical assessment of the policies on e-government in Europe and in Italy, and draft a research agenda focused on Liguria Region. The article moves from the need to conduct research aimed at analyzing the change in the relations between subject and institution in contemporary western societies. The article, focusing on official documents, explores the strategies of digital transformation adopted by the EU. Liguria is a case study of interest because, starting from the 2016-2018 Digital Strategic Program, has adopted a strong focus on the principles of Open Government and an explicit decision to invest in specific digital services for citizens and businesses.

Historical ecology : from prehistoric to early medieval in the Ligurian Apennines -- Villas, villages and castra : from Roman to medieval settlement -- Regional identities : political and religious change -- Genoa : centre and periphery -- Vara Valley : at the margins? -- Epilogue: A Dark Age? -- Appendix: Key dates

Abstract. In recent decades, the Entella River basin, in the
Liguria Apennines, northern Italy, was hit by numerous intense rainfall
events that triggered shallow landslides and earth flows, causing casualties
and extensive damage. We analyzed landslide information obtained from
different sources and rainfall data recorded in the period 2002–2016 by
rain gauges scattered throughout the catchment, to identify the event rainfall
duration, D (in h), and rainfall intensity, I (in mm h−1), that
presumably caused the landslide events. Rainfall-induced landslides affected
the whole catchment area, but were most frequent and abundant in the central
part, where the three most severe events hit on 23–24 November 2002,
21–22 October 2013 and 10–11 November 2014. Examining the timing and location of
the slope failures, we found that the rainfall-induced landslides occurred
primarily at the same time or within 6 h from the maximum peak
rainfall intensity, and at or near the geographical location where the
rainfall intensity was largest. Failures involved mainly forested and
natural surfaces, and secondarily cultivated and terraced slopes, with
different levels of maintenance. Man-made structures frequently characterize
the landslide source areas. Adopting a frequentist approach, we define the
event rainfall intensity–event duration (ID) threshold for the possible
initiation of shallow landslides and hyper-concentrated flows in the Entella
River basin. The threshold is lower than most of the curves proposed in the
literature for similar mountain catchments, local areas and single regions
in Italy. The result suggests a high susceptibility to rainfall-induced
shallow landslides of the Entella catchment due to its high-relief
topography, geological and geomorphological settings, meteorological and
rainfall conditions, and human interference. Analysis of the antecedent
rainfall conditions for different periods, from 3 to 15 days, revealed that
the antecedent rainfall did not play a significant role in the initiation of
landslides in the Entella catchment. We expect that our findings will be
useful in regional to local landslides early warning systems, and for
land planning aimed at reducing landslide risk in the study area.

Abstract. The metropolitan area and the city of Genoa has become a national and international case study for geohydrological risk, mainly due to the frequency of floods. In 2014, there were landslides again, as well as flash floods that have particularly caused casualties and economic damage. The weather features of the Gulf of Genoa and the geomorphological–environmental setting of the Ligurian coastal land are the predisposing factors that determine heavy rains and their resulting effects on the ground. This study analysed the characteristics of the main meteorological disasters that have hit Genoa since the start of the 20th century; changes in the rainfall regime are evaluated and the main stages of urbanization of the area are detailed, with the resulting changes to the drainage network, in order to identify the main causes of this high geohydrological risk. To this end, scientists have used climate data recorded at the station of Genoa University, in operation since 1833, and at Ponte Carrega station, located in the middle reach of the Bisagno stream, a well-known watercourse because of its frequent floods. Urban sprawl was evaluated through a multi-temporal mapping comparison, using maps available from the beginning of the 19th century up to the current regional technical maps. The average air temperature in Genoa shows a statistically significant increase, while the number of rainy days displays an equally clear decrease over time. The total annual rain value does not seem to indicate rather noticeable changes. The intensity of rain in Genoa expressed as rainfall rate, i.e.~the ratio of annual rainfall and number of rainy days, shows statistically significant growth. The geohydrological vulnerability in Genoa has increased over time due to urban development which has established modifications in land use, from agricultural to urban, especially in the valley floor. Waterways have been confined and reduced to artificial channels, often covered in their final stretch; in some cases they have even been totally removed. These actions should be at least partially reversed in order to reduce the presently high hydrological risk.

Abstract. A critical pluviometric event occurred in the central-eastern Ligurian Riviera, 15 km from Genoa, on 1 June 2007. This event caused landslides and hydraulic problems between Sori and Camogli and in the inland area of the Recco Valley. An analysis of the heavy rainfall was conducted. Hourly precipitation data revealed a critical event between 04:00 a.m. and 07:00 a.m. local time, with more than 220 mm of precipitation over three hours. Slope movements were mainly debris flows that detached from the lateral valleys of the Recco Stream catchment and from well-maintained, wooded slopes that were also characterised by cultivated terraces. Numerous slide planes corresponded to the interface between the surface cover and the underlying bedrock, which presents an unfavourable geologic structure in terms of stability assessment. In most cases, the displaced material had a limited thickness. Debris cover was rapidly channelled along small valleys, which controlled the critical hydraulic conditions in the secondary drainage network. Man-made drainage systems were partially or totally blocked in a very short time and, like the natural watercourses, accumulated thick and extensive alluvial fans. Most of the instability phenomena occurred in areas that had been designated medium or low-risk areas during land planning, and in sectors that were defined as stable, because they lacked geomorphic indicators connected to landslide risks. The above considerations highlight some gaps of the Recco Stream Master Plan. Therefore, to update this land planning tool, it is necessary to extensively investigate local geomorphological characteristics and to adopt a different method for assigning weights to the geohazard maps.

Abstract. Over the past century the municipal area of Genoa has been affected by recurring flood events and several landslides that have caused severe damage to urbanized areas on both the coastal-fluvial plains and surrounding slopes, sometimes involving human casualties. The analysis of past events' annual distribution indicates that these phenomena have occurred with rising frequency in the last seventy years, following the main land use change due to the development of harbour, industrial, and residential areas, which has strongly impacted geomorphological processes. Consequently, in Genoa, civil protection activities are taking on an increasing importance for geo-hydrological risk mitigation. The current legislative framework assigns a key role in disaster prevention to municipalities, emergency plan development, as well as response action coordination in disaster situations. In view of the geomorphological and environmental complexity of the study area and referring to environmental laws, geo-hydrological risk mitigation strategies adopted by local administrators for civil protection purposes are presented as examples of current land/urban management related to geo-hydrological hazards. Adopted measures have proven to be effective on several levels (planning, management, structure, understanding, and publication) in different cases. Nevertheless, the last flooding event (4 November 2011) has shown that communication and public information concerning the perception of geo-hydrological hazard can be improved.

Abstract. Faccini et al. (2012) describe an intense rainstorm that caused a flash flood and triggered landslides in a sector of Eastern Liguria (Italy) on 1 June 2007 and discuss the implications for geomorphic hazard assessment and land use planning. This comment points out some weaknesses in the use of weather radar for the assessment of rainfall and in the documentation of flood response.