1,721,080 research outputs found
Strike-slip tectonics between the Marsica Range and the Molisan Basin in the Sangro Valley (Abruzzo, Central Italy)
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Fluvial Dynamics in the Castel di Sangro plain: morphological changes and human impact from 1875-1992
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Some examples in the field of Geotourism in Emilia Romagna, Marche and Abruzzo Regions (Northern-Central Italy)
No full textItaly is a country with a rich natural heritage that is having difficulty infinding the right areas for acquiring knowledge, protection and improvement. Inparticular, the geological component of the landscape has not yet acquired a sufficientvalue as a cultural asset which people can learn about and share. Within the Italianterritory geotourism activities and products are recently widespread and, in thispaper, some examples of activities carried out in the Emilia-Romagna, Marche andAbruzzo regions (northern-central Italy) are illustrated. They show different possibleapproach to the realization of geotourism maps, geological itineraries, portable andon site illustrative materials, web based projects, geosites analysis. These activitiesare targeted at various potential users, tourists, local residents, young people, schoolsetc., and are aimed at the enhancement of geological and geomorphological aspects ofthe natural heritage making it available to the public
Large-scale and deep-seated gravitational slope deformations on mars. A review
Full text linkThe availability of high-quality surface data acquired by recent Mars missions and the development of increasingly accurate methods for analysis have made it possible to identify, describe, and analyze many geological and geomorphological processes previously unknown or unstudied on Mars. Among these, the slow and large-scale slope deformational phenomena, generally known as Deep-Seated Gravitational Slope Deformations (DSGSDs), are of particular interest. Since the early 2000s, several studies were conducted in order to identify and analyze Martian large-scale gravitational processes. Similar to what happens on Earth, these phenomena apparently occur in diverse morpho-structural conditions on Mars. Nevertheless, the difficulty of directly studying geological, structural, and geomorphological characteristics of the planet makes the analysis of these phenomena particularly complex, leaving numerous questions to be answered. This paper reports a synthesis of all the known studies conducted on large-scale deformational processes on Mars to date, in order to provide a complete and exhaustive picture of the phenomena. After the synthesis of the literature studies, the specific characteristics of the phenomena are analyzed, and the remaining main open issued are described
From Landscape Preservation to Landscape Governance: European Experiences with Sustainable Development of Protected Landscapes
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Morphostructural, meteorological and seismic factors controlling landslides in weak rocks: The case studies of Castelnuovo and Ponzano (north east Abruzzo, central Italy)
Full text linkWe investigated the role of the morphostructural setting and seismic and meteorological factors in the development of landslides in the piedmont of the Abruzzo Apennines. In February 2017, following a heavy snow precipitation event and a moderate seismic sequence (at the end of the Central Italy 2016–2017 seismic crisis), several landslides affected the NE-Abruzzo chain and piedmont area. This work is focused on the Ponzano landslide (Civitella del Tronto, Teramo) and the Castelnuovo landslide (Campli, Teramo) in the NE Abruzzo hilly piedmont. These landslides consist of: (1) a large translational slide-complex landslide, affecting the Miocene–Pliocene sandstone clay bedrock sequence of the piedmont hilly sector; and (2) a complex (topple/fall-slide) landslide, which occurred along a high and steep scarp on conglomerate rocks pertaining to terraced alluvial fan deposits of the Pleistocene superficial deposits. Both of the landslides are typical of the Abruzzo hilly piedmont and both of them largely affected houses and villages located on top of the scarp or within the slope. The landslides were studied by means of field geological and geomorphological mapping, borehole investigations, geostructural analysis and photogeological analysis. For the Ponzano landslide, a detail pre-post-landslide air photo interpretation allowed for defining the deformation pattern occurred on the slope. For the Castelnuovo landslide, the triggering factors and the stability of the slope were evaluated with FLAC3D numerical modelling, in pre- and post-landslide conditions. Through this integrated analysis, the triggering factors, the landslide mechanism and the stability conditions of the landslides and the characterization of two main types of landslides affecting the piedmont hilly area of the Abruzzo region were investigated
Assessment of Potential Landslide Scenarios Using Morphometry, Geomorphological Constraints, and Run-Out Analysis: A Case Study from Central Apennines (Italy)
No full textLandslides are among the most damaging natural hazards, posing significant threats to human lives and infrastructures, especially in mountainous regions such as the Central Apennines (Italy). This study focuses on the Mt. Marsicano catchment (2245 m a.s.l.), characterized by peculiar morphometric features and geomorphological constraints that highlight the possibility of potential landslide scenarios. The methodological approach led to the identification of potential landslide propagation patterns. The RAMMS::DEBRIS FLOW module was used to model two potential landslide scenarios: a debris flow-like movement with a volume of 2.03 × 104 m3 and a rock avalanche-like movement with a volume of 1.2 × 106 m3. Findings from the latter scenario suggested river obstruction and potential lake formation upstream. Triggering mechanisms were partially explored, linking the debris flow scenario to heavy rainfall events (>50 mm/day) and the rock avalanche scenario to earthquakes with Mw > 5.0. Despite the absence of occurred landslides for back-calculation analysis and modeling based on geomorphic evidence rather than calibrating to a specific local past event, the study provides preliminary clues about the combination between morphometric analysis and geomorphological constraints in hypothesizing potential landslide scenarios. It provides a foundation for anticipating future landslide impacts in mountainous areas with limited historical data, offering valuable geomorphological insights for preventive hazard assessment and mitigation strategies in similar environments
Analysis of soil erosion induced by heavy rainfall: A case study from the NE Abruzzo Hills Area in Central Italy
No full textSoil erosion induced by heavy rainfall deeply affects landscape changes and human activities. It depends on rainfall distribution (e.g., intensity, duration, cumulative per event) and is controlled by the interactions between lithology, orography, hydrography, land use, and vegetation. The Abruzzo piedmont coastal hilly area has been affected by several heavy rainfall events in the last decades. In this work, we investigated three ~1-day heavy rainfall ( > 35 mm/h and 100-220 mm/day) events in 2007, 2011, and 2012 that occurred in the clayey hilly coastal NE Abruzzo area, analyzing cumulative rainfall, intensity, and duration while mapping triggered geomorphological effects (soil erosion and accumulation) and evaluating average erosion. The analysis provides contributions to a soil erosion assessment of clayey landscapes that characterizes the Adriatic hilly area, with an estimation of rainfall-triggering thresholds for heavy soil erosion and a comparison of erosion in single events with rates known in the Mediterranean area. The triggering threshold for heavy soil erosion shows an expected value of ~100-110 mm. The estimated average soil erosion is from moderate to high (0.08-3.08 cm in ~1-day heavy rainfall events) and shows a good correlation with cumulative rainfall and a poor correlation with peak rainfall intensity. This work outlines the strong impact of soil erosion on the landscape changes in the Abruzzo and Adriatic hilly areas
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