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  • Elsevier  (2)
  • Egu-Copernicus  (1)
  • Geophysical Research Abstracts Vol. 13, EGU2011-10972, 2011 EGU General Assembly 2011 © Author(s) 2011  (1)
  • 1
    Publication Date: 2021-05-12
    Description: Mapping and luminescence aging of raised marine terraces and aeolian ridges along an ∼90 km coastal stretch in southwestern Sicily provide the first quantitative assessment of vertical tectonic deformation in this region, which spans the frontal part of an active thrust belt. We recognized a staircase of eleven terraces and nine related aeolian ridges. The elevation profile of terraces parallel to the coast shows a 〉90 km long bell-shaped pattern, onto which shorter-wavelength (∼10 km long) undulations are superimposed. Luminescence ages from terraced beach deposits and aeolian sediments constrain the position of paleoshorelines formed during MIS 5e, 7a and 7c, with a maximum uplift rate of ∼0.75 mm/a, and indicate a late Middle-Late Pleistocene (80–400 ka) age for the sequence of terraces. The elevation of Lower Pleistocene morpho-depositional markers points that uplift may have occurred at similar rates at the beginning of the Early Pleistocene, but almost zeroed between ∼1.5 and 0.4 Ma before the recent renewal. The uneven elevation of Middle-Upper Pleistocene paleoshorelines observed moving along the coast documents that uplift embeds both a regional and a local component. The regional, symmetric bell-shaped uplift is related to involvement in the thrust belt of thicker crustal portions of the northern African continental margin. The short-wavelength undulations represent the local component and correspond to actively growing bedrock folds. The present study contributes to unravel the different spatial and temporal scales of deformation processes at a collisional margin.
    Description: Published
    Description: 106812
    Description: 2T. Deformazione crostale attiva
    Description: JCR Journal
    Keywords: Marine terraces ; Aeolian ridges ; Luminescence dating ; Pleistocene ; Frontal thrust belt ; Fold growth ; Southwestern Sicily ; Mediterranean sea ; 04.04. Geology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
    Publication Date: 2017-04-04
    Description: INGV is currently the largest European scientific institution dealing with Earth Sciences research and real-time surveillance, early warning, and forecast activities in geophysics and volcanology. The Laboratorio Didattica e Divulgazione Scientifica of INGV organizes every year rich educational and outreach activities with schools of different levels and with general public to convey scientific knowledge and to promote research on science and nature, focusing on volcanic and seismic hazard. The activities encompass a wide variety of formats, such as the opening of our labs to schools for guided visits, contributing to national (e.g., the Italian “Week of the Scientific Culture”, launched by the Ministry of Education and Research) and international (e.g., the European “Night of the Researchers”) events, editing educational videos, creating multimedia tools also available on the Web. Moreover, we contribute to expositions and science festivals organizing exhibitions with experiments, models, and exhibits designed to teaching and learning geophysics. Finally, we offer guided visits to the control rooms run by our Institute, which ensures the round-the-clock volcanic and seismic surveillance of the whole Italian territory. During the Week of the Scientific Culture and the Night of the Researchers we opened our Institute to the general public, in order to show our laboratories, to talk about new researches on Earth Sciences and to explain the volcanic and seismic risk and the related surveillance activities. These initiatives are widely appreciated by the community and we organized special events with the aim to inspire curiosity toward scientific research, and to facilitate the approach of the general public to science and nature. The special event of the 2010 programmes was a scientific-musical format: Seismic waves and acoustic waves, from earthquake to music. The aim of this project was to involve the public in scientific events offering happening where the scientific language is mediate through the language of the music. In this way, scientific phenomenon are brought in using emotion, making easier the understanding of the scientific themes. The format started with short lectures on earthquake and seismic wave propagation to move on the comparison between the seismic waves and the acoustic waves. We used seismograms, acoustic instruments, the voice, and the Earth sounds to explain the relation between earthquake waves and music. The scientific talks were organized to create a trail that, through emotion and curiosity, guides the public to the discovery and comprehension of the scientific phenomenon. The final part of the event was devoted to classical/jazz/blues live concerts performed by groups and ensembles, some of them arranged by INGV researchers. As a general result, thanks to this project we joined science and community, merging the INGV mission with the public expectation. This scientific-musical format represented an experimental outreach project, new, stimulating, and appreciated by the audience that can be used as good practice of scientific divulgation.
    Description: Published
    Description: Vienna- Austria
    Description: 5.9. Formazione e informazione
    Description: open
    Keywords: Seismic waves ; earthquake ; 05. General::05.03. Educational, History of Science, Public Issues::05.03.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Poster session
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  • 3
    Publication Date: 2021-10-13
    Description: Landslides are widespread natural phenomena that play an important role in landscape evolution and are responsible for several casualties and damages. Slope instability is linked to the combination of geological, geomorphological, and climatic factors with various triggering mechanisms; among these, seismic shaking can induce relevant changes in the landscape, leading to coseismic and post-seismic phenomena such as landslide events. The Abruzzo Region (Central Italy) is severely affected by Earthquake-Induced Landslides (EILs), linked to the geomorphological dynamics and the severe seismicity of the area. The distribution, mechanisms, and typology of landslides are strictly related to the different physiographic and geological-structural settings. This paper focuses on the realisation of an EILs susceptibility map, following a heuristic approach combined with a statistical analysis, integrated using GIS technology. This approach led to the identification of nine instability factors. These factors were analysed for the construction of thematic maps. Hence, each factor was assigned proper expert-based ranks and weights based on the critical evaluation of literature data as well as on available landslide inventories and combined in a preliminary map wherein high/low numerical values correspond to a high/low propensity of the slope to fail; furthermore, a statistical analysis of these values was performed to derive suitable susceptibility classes. Results presented herein highlight the robustness of the approach; remarkably, the applied methodology is suitable even in areas where a detailed landslide catalogue is lacking, when the same classification and weighting of available parameters is performed. The statistical analyses and the adoption of an absolute scale ranging from minimum to maximum potential values, finally, ensures the comparability of results among different study areas. Finally, this work represents a scientific and multidisciplinary tool for better defining situations that could lead to hazards (such as landslides) following an earthquake to develop sustainable territorial planning, emergency management, and loss-reduction measures.
    Description: Published
    Description: 105729
    Description: 2T. Deformazione crostale attiva
    Description: JCR Journal
    Keywords: 04.04. Geology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 4
    Publication Date: 2023-08-29
    Description: The Italian historical earthquake record is among the richest worldwide; as such it allows for the development of advanced techniques for retrieving quantitative information by calibration with recent earthquakes. Building on a pilot elaboration of northern Italian earthquakes, we developed a procedure for determining the hypocentral depth of all Italian earthquakes from macroseismic intensity data alone. In a second step the procedure calculates their magnitude, taking into account the inferred depth. Hypocentral depth exhibits substantial variability countrywide but has so far received little attention: pre-instrumental earthquakes were routinely “flattened” at the upper-crustal level (∼10 km), on the grounds that the calculation of hypocentral depth is heavily dependent on the largely unknown local propagation properties. We gathered a learning set of 42 earthquakes documented by reliable instrumental data and by numerous macroseismic intensity observations. We observe (1) that within 50 km from the epicenter the ground motion attenuation rate is primarily controlled by hypocentral depth and largely independent of magnitude, (2) that within this distance the fluctuations in crustal attenuation properties are negligible countrywide, and (3) that knowing both the depth and the expected epicentral intensity makes it possible to estimate a reliable magnitude.
    Description: INGV DPC, 2019–2021 agreement; All. A, WP 7
    Description: Published
    Description: 1007–1028
    Description: 4T. Sismicità dell'Italia
    Description: 5T. Sismologia, geofisica e geologia per l'ingegneria sismica
    Description: JCR Journal
    Keywords: hypocentral depth ; magnitude ; macroseismology ; pre-instrumental earthquakes ; 04.06. Seismology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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