1,348 research outputs found
Seta
No full textL'origine della seta si fa risalire al 1958 il percorso storico è stato trattato con particolare attenzione per definire più accuratamente tutto il processo della sua lavorazione.La seta è stata anche trattata da un punto di vista commerciale, importanti sono i suoi impieghi come importante è la sua qualità sia dal punto di vista della tessitura sia da un punto di vista della provenienza. Il comparto industriale riveste infine un'interesse sia sociale che economic
Geomorphologic response of fluvial and coastal terraces to Quaternary tectonics and climate as revealed by geostatistical topographic analysis
No full textaccepted article online since 09/02/201
Drainage system adjustment in response to the opening of the Rieti intermontane basin (Central Italy): geostatistical reconstruction of the PaleoFarfa River alluvial plain
No full textThe Use of the Stream Length-Gradient Index in morphotectonic analysis of small catchments: a case study from central Italy
No full textCalabrian Arc oroclinal bending: The role of subduction
Full text linkPaleomagnetic data collected in the last 30 years
indicate that a simple orocline model is not sufficient
to describe the complex evolution of the Calabrian
Arc. Present-day curvature of the Calabrian Arc is the
result of a different tectonic history between the edges
of the arc, namely the Southern Apennines and Sicily,
and its core, the Calabria-Peloritani Domain. These
differences mirror the structural architecture and deep
lithospheric configuration of the Calabrian Arc, which
are related to the geometry and evolution of the Ionian
subduction system. In particular, the presence of lateral
heterogeneities in the subducting lithosphere and the
subsequent progressive decrease in width of the trench
during subduction are likely the main causes of
Calabrian Arc formation and of its present-day narrow
tight shap
Process-based assessment of erosion dynamics in the Upper Orcia Valley (Southern Tuscany, Italy): A new semi-quantitative integrated approach
No full text[No abstract available
Geomorphological response of fluvial and coastal terraces to Quaternary tectonics and climate as revealed by geostatistical topographic analysis
No full textGeostatistical topographic analysis is widely recognized as a useful tool for the statistical reconstruction of planar geomorphic markers from relict surfaces. This work is aimed at improving the geostatistical approach used in previous works and developing a method for evaluating the incision rates of rivers in their lower catchments during the Late Quaternary. We chose the major valleys of the Adriatic foothills (central Italy), affected since Late Miocene by a differential tectonic uplift which is still active. In particular, (i) we applied the geostatistical analysis to reconstruct the original top-surfaces of fluvial-to-coastal terrace bodies at the Metauro River and Cesano River mouths; (ii) we performed correlations between the height distribution of the alluvial terrace sequences and the Quaternary climatic curve to estimate the average long-term fluvial incision rates in the lowermost reaches of the Metauro, Cesano, Misa and Esino Rivers. The obtained averaged incision rates have been interpreted also in the light of the Stream- Length Gradient Index (SL Index), Steepness Index (Ks), and Concavity Index (Θ) as proxies of the stream-power per unit length. Results confirm that geostatistical and terrain analysis of topographic and geometric arrangements of fluvial and coastal terraces is an effective tool in detecting geomorphic and tectonic factors inducing perturbations on planar geomorphic markers. In particular, we better delineated the surface geometry and boundaries of well-developed coastal fans at the mouths of the Metauro and Cesano Rivers, already recognized in previous works through sedimentological, morphostratigraphic, and chronological data. Moreover, we found evidence for cut-and-fill phases that took place during and immediately after the river aggradation of the late Quaternary glacial periods. Despite the Slope-Area analysis evidenced a widespread influence of the regional differential uplift on single river basin configuration, we observed some space and time variability of averaged incision rates for adjacent valleys, mainly explained by physiographic configuration and dynamics of drainage network. © 2011 John Wiley & Sons, Ltd
Prediction of soil erosion and mass wasting processes in southern Tuscany using gradient boosting
No full text"I falsi Puritani": A Case of Espionage
No full textOn ground of contemporary manuscript sources and press reviews, the essay sketches the story of a “false” version of Bellini’s I Puritani (1835), which was performed in the 1836 in some of Italy’s opera houses and which contained sections written by an anonymous second-rate composer
Back-analysis of rock landslides to infer rheological parameters
No full textThis chapter focuses on the description of a multidisciplinary methodology aimed at a comprehensive modeling of large rock slope instabilities, by considering the rheological behavior of the involved rock masses. Such a methodology is characterized by an integrated approach addressed to take into account the complex set of variables that features rock slope instabilities occurring on a wide range of spatial/ temporal scales. Large rock slope failures can be regarded as the paroxysmal phase of time-dependent gravitational processes influenced by several factors that can be grouped in predisposing and conditioning ones. The predisposing factors encompass geological-structural setting and geomechanical properties, the conditioning factors act at different scales and are related to morpho-evolution of slope-to-valley floor systems, due to both surface effects of tectonic deformations and erosional/depositional
processes, as well as geodynamic stress regime variations. In addition, triggering factors can be referred to intense and short-duration actions that, among the others, can be related to earthquakes, water pressure changes and anthropic activities.
The here illustrated methodology consists in a multi-modeling approach that includes the contributions of a morpho-evolutionary modeling of the slope-to-valley floor system; a detailed engineering-geology modeling, that transposes geomechanical parameters to geological-structural features of; a time-dependent stress-strain numerical modeling, performed through a sequential approach which takes into account the main morph-evolutionary stages of the slope. Two case studies are here presented from the Italian Apennines which experienced such a multi-modeling approach to infer suitable rheological parameters to rock masses involved in creep process on natural slopes
- …
