1,721,022 research outputs found
Le Molasse di Anzano nell’evoluzione tettono-sedimentaria messiniana del margine occidentale della microzolla apula nel settore irpino-dauno dell’orogene sud-appenninico
No full textProposta di una procedura per il rilievo del grado di alterazione di gneiss su fronti rocciosi
No full textInfluenza delle strutture tettoniche sul profilo di alterazione e sulla franosità negli gneiss dell'area di San Pietro in Guarano (Calabria settentrionale)
No full textThe ‘Evaporiti di Monte Castello’deposits of the Messinian Southern Apennines foreland basin (Irpinia–Daunia Mountains, Southern Italy): stratigraphic evolution and geological context
No full text
Le unita “sannitiche” Auct. (Appennino centro-meridionale): rassegna delle correnti interpretazioni stratigrafiche e paleogeografiche e nuove ipotesi con lintroduzione dell'unita di Frigento
No full textClustering radar satellite (PS-InSAR time series) data: Geological interpretations in the Sannio-Irpinia area (Campania, Italy)
No full textSi descrive un’applicazione di tecniche di clustering su dati
satellitari relativi ai serie storiche di deformazione del suolo. Tali dati sono stati
ottenuti mediante elaborazione con tecnica PS-InSARTM su immagini dei
satelliti ERS1-2 per il periodo 1992-2000. L’area analizzata è compresa tra le
città di Avellino e Benevento in Campania, e si sono ottenute alcune importanti
informazioni sui trend deformativi del suolo presenti nel periodo di misura e sulla loro distribuzione areale, che è stata interpretata in prospettiva geologica e sismotettonica
Pliocene Depositional Sequences in Wedge-Top Depozones of Apennine Foreland Basin System (Irpinia-Daunia Mts., Southern Italy)
No full textRockfall risk assessment to persons travelling in vehicles along a road: the case study of the Amalfi coastal road (southern Italy)
No full textThe paper deals with the assessment of rockfall risk to persons travelling in vehicles along the SS163 road, an important transportation corridor supporting a high vehicle traffic within the well-known tourist area of the Amalfi Coast (southern Italy). To this aim, the Rockfall Hazard Rating System (RHRS) and quantitative risk assessment (QRA) procedures, in this latter case for three rockfall risk scenarios, are applied. With reference to a large portion (33.820 out of a total of 50.365 km) of the SS163 road, the obtained QRA results highlight that, although the estimated individual risk to life satisfies the adopted tolerable risk criterion, the computed societal risk cannot be tolerated. Starting from this result, site-specific QRA analyses—carried out with reference to some road sections chosen on the basis of the RHRS results—allow the detection of the SS163
portions where the individual risk to life exceeds the tolerable risk threshold and, then, the recourse to mitigation measures could reveal necessary. In this regard, RHRS and QRA methods can be considered complementary tools in prioritizing the road sections where construction funds can be profitably spent in order to mitigate the rockfall risk with reference to both direct consequences (life loss) and indirect ones (traffic delay and diversions)
Mechanisms and frequency-size statistics of failures characterizing a coastal cliff partially protected from the wave erosive action
No full textLandslides and surface erosion are major processes controlling the progressive recession of many rocky cliffs along the Italian coastline. Nevertheless, many coastal settlements were built along cliffed sectors prone to rapid collapses. This represents a serious risk for tourists and living people, as well as for buildings, roads and railway networks. The densely urbanized coastline of the Campi Flegrei active volcanic district is one of the rocky coastal areas of South Italy mostly exposed to the recession. Here, coastal cliffs are made by volcaniclastic deposits and include remnants of ancient volcanic edifices formed in the last 15 ka. Due to petrographic, geotechnical and geostructural properties of volcaniclastic deposits, these cliffs have been affected by rapid recession since their origin. This research focuses on a cliff of the Campi Flegrei coastaline (Torrefumo, Monte di Procida) which, although currently protected from the sea waves by a seawall, is still retreating. We assessed the ongoing recession using a change detection analysis, based on accurate topographic data acquired with two terrestrial laser scanning surveys executed in 2013 and 2016. The quantitative comparison of 3D point clouds datasets allowed detecting 191 cliff failures. We verified that the frequency-magnitude distribution of the detached blocks followed an inverse power law, and most of the involved volumes were between 0.01 and 1 m(3). Retreat rates of different cliff sectors varied from 0.001 to 0.025 m/year. Our analysis also allowed us to recognize slope failure mechanisms and distinguish rock falls from grain-by-grain surficial erosion
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