Leucci G.,CNR Institute of Archeological Heritage - Monuments and Sites |
Grasso F.,External Collaborator |
Persico R.,CNR Institute of Archeological Heritage - Monuments and Sites |
De Giorgi L.,CNR Institute of Archeological Heritage - Monuments and Sites
International Journal of Conservation Science | Year: 2015
In this paper, we show the results of three case histories where GPR prospecting has been interpreted also with the aid of a specific archive research on documents of the XVI and XVII century. The case histories are related to three churches of the renaissance and baroque period in Lecce, Lecce, Southern Italy. The aim is to deliver the usefulness of GPR prospecting in these kind of monuments and to show how the likelihood of the interpretation can be increased when historical information is available.
Dell'Aringa M.,External Collaborator |
Giannecchini R.,University of Pisa |
Puccinelli A.,University of Pisa
Natural Hazards and Earth System Sciences | Year: 2014
Paganico is a little village located in the southeastern portion of the Lucca Plain (northwestern Tuscany, Italy). Since the seventies, a few square kilometers' area around Paganico has been involved in the opening of small cavities (sinkhole-like) on the land surface. At the beginning they were very small and sporadic. Later on the phenomena were characterized by a significant extension, increasing in frequency and size (up to 2 m in diameter and depth), causing inconvenience to local people, agricultural operations and occasionally a little damage (cracks to buildings, fencing walls and outside floorings).
The cavities prevalently occur at the end of the dry season, during or immediately after the first intense rainy events, that is, between the end of summer and early autumn. Even so, the predisposition and triggering causes at present are not completely clarified. Therefore this study is aimed at individuating the triggering and evolution mechanism of the Paganico sinkhole-like features, particularly referring to the stratigraphic, hydrogeological and geotechnical features of the involved materials.
Another important issue made clear with this research is represented by the overexploitation of the local aquifer, characterized by particular hydro-structural conditions. In fact, the Paganico underground shows three horizons with different lithologic, hydrogeological and geotechnical properties: a superficial silty-sandy horizon (2-3 m thick), which is particularly involved in collapses; an intermediate silty-clayey horizon (2-4 m thick); and a lower and thick gravel-pebbly horizon, characterized by important water resources and heavy pumping. Since the seventies, such water pumping rose considerably due to the local demographic (well field), industrial (paper manufacture) and agricultural development.
From a hydrogeological point of view, this area is consequently characterized by two water tables: a temporary one, housed in the superficial silty-sandy horizon (perched aquifer), and a second one, confined, associated with the lower gravel-pebbly horizon (aquifer). The perched aquifer and confined aquifer are separated by an impermeable silty-clayey horizon. According to the observations resulting from this study, the latter probably tends to fracture by desiccation during the dry season, originating water exchange between the two water tables during the first important autumnal rainfall, depending on the pumping conditions, which lower the piezometric surface of the confined aquifer. Cracking would also characterize the superficial horizon. Thus, the water exchange would produce erosional phenomena in the superficial material, with removal of the fine fraction and collapse. This process could be at the origin of the cavities opening ©2014. CC Attribution 3.0 License.
Cecchi F.,University of Pisa |
Ciampolini R.,University of Pisa |
Giacalone G.,External Collaborator |
Paci G.,University of Pisa
Animal Science Journal | Year: 2014
The genealogical data of 471 (whole population: WP) Lizard canaries of an Italian breeder were analyzed to evaluate the genetic variability of the breed. The reference population (RP) comprised 346 living reproductive birds. Average generation interval was 1.61 ± 0.718 for males and 1.72 ± 0.863 for females. The average value of inbreeding (F) and relatedness (AR) in the RP were 15.83% and 22.63%, while the average increase in inbreeding was estimated to be 6.71% per generation (effective population size = 7.49). The results showed the need to reduce the level of inbreeding which would result in significant loss of genetic variation and in significant inbreeding depression. © 2014 Japanese Society of Animal Science.
Manna F.,University of Naples Federico II |
Allocca V.,University of Naples Federico II |
Fusco F.,External Collaborator |
Napolitano E.,University of Naples Federico II |
De Vita P.,University of Naples Federico II
Rendiconti Online Societa Geologica Italiana | Year: 2013
The assessment of groundwater recharge for aquifers of a Geopark is an essential issue to plan water management based on balancing both human uses and river ecology. The relevance of this topic is enhanced by the climatic variability which constraints to analyze water budget with a non-stationary methodology. In this paper, an approach for evaluating the effects of climatic variability on the groundwater recharge of karst aquifers of the Cilento Geopark is proposed, focusing on the influence of the North Atlantic Oscillation (NAO). Such karst aquifers store invaluable groundwater resources feeding settlements of the Geopark and maintaining ecological equilibrium of the main rivers. With such purpose, time series of annual precipitation and air temperature, recorded by a meteorological network covering the Cilento Geopark, were gathered for the period 1921-2010 and analyzed. The most important result is the finding of a complexly cyclical variability of precipitation, with periodicities from yearly to decadal, which is strongly correlated to the NAO. During the examined period, the annual precipitation and effective precipitation ranged around the mean value, respectively for about ±40% and ±70%. Due to the continental influence of the NAO, the proposed approach can be conceived as being extendable to other Geoparks, climatically controlled by the NAO, in which the management of the groundwater resources is crucial for river ecological systems. © Società Geologica Italiana, Roma 2013.
Apuzzo D.,External Collaborator |
De Vita P.,University of Naples Federico II |
Palma B.,Idrogeo S.r.l. |
Calcaterra D.,University of Naples Federico II
Italian Journal of Geosciences | Year: 2013
Most of the shoreline of the Campania region, Southern Italy, is characterized by steep and high rocky slopes, then several localities, densely populated and highly touristic attractive for the worldwide famous landscapes are exposed to an high rockfall risk. Particularly, the touristic localities on the Sorrentine Peninsula, such as Sorrento, Vico Equense and Amalfi, can be considered among the most representative case-studies prone to the recurrent instability of rock blocks. Due to the frequent location of settlements and roads underneath and at very limited or null distances from the carbonate steep slopes, a diffuse condition of high rockfall risk exists. Consequently, the assessment of priorities in directing active remedial works to be carried out on the unstable rock slopes is still a challenging issue. In order to find an effective method for assessing the susceptibility to rockfall initiation with approaches suitable for detailed mapping, a combined application of standard methods was tested. The Romana's Slope Mass Rating (SMR) and the Matheson's graphical tests, for assessing the number of fundamental instability mechanisms, were applied in a test site of the Sorrento coast. Results of the two methods were separately evaluated and then combined in a new rating approach by indexing the respective susceptibility classes. In addition, the number of joint sets and the macro-structural features of the rock-mass (faults and master joints) were considered. By means of statistical analyses of rockfalls occurred in the test area, the results obtained with the new combined approach were found more accurate in assessing and mapping the most susceptible areas. © Società Geologica Italiana, Roma 2013.