Small-scale slope instability on the submarine flanks of insular volcanoes. The case-study of the Sciara del Fuoco slope (Stromboli)
| Autor: | Luca Verrucci, Paolo Tommasi, Flavio Passeri, Francesco Latino Chiocci, Claudia Romagnoli, Alessandro Bosman, Daniele Casalbore |
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| Přispěvatelé: | Daniele Casalbore, Flavio Passeri, Paolo Tommasi, Paolo Verrucci, Alessandro Bosman, Claudia Romagnoli, Francesco Latino Chiocci |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
geotechnical modelling
010504 meteorology & atmospheric sciences Lava Pyroclastic rock Time-lapse surveys 010502 geochemistry & geophysics 01 natural sciences Slope stability Stromboli Multibeam bathymetry Slope stability Tsunamigenic landslide Lava delta Time-lapse surveys Stromboli Geotechnical modelling multibeam bathymetry slope stability tsunamigenic landslide lava delta 0105 earth and related environmental sciences geography geography.geographical_feature_category Submarine Landslide Volcano Subaerial General Earth and Planetary Sciences Geohazard Seismology Geology |
| Zdroj: | International journal of earth sciences (1999, Print) (2020). doi:10.1007/s00531-020-01853-5 info:cnr-pdr/source/autori:Casalbore D.; Passeri F.; Tommasi P.; Verrucci L.; Bosman A.; Romagnoli C.; Chiocci F.L./titolo:Small-scale slope instability on the submarine flanks of insular volcanoes: the case-study of the Sciara del Fuoco slope (Stromboli)/doi:10.1007%2Fs00531-020-01853-5/rivista:International journal of earth sciences (1999, Print)/anno:2020/pagina_da:/pagina_a:/intervallo_pagine:/volume |
| DOI: | 10.1007/s00531-020-01853-5 |
| Popis: | Small-scale landslides affecting insular and coastal volcanoes are a relevant geohazard for the surrounding infrastructures and communities, because they can directly impact them or generate local but devastating tsunamis, as demonstrated by several historical accounts. Here, a review of such landslides and associated predisposing/triggering mechanisms is presented, with particular reference to the submarine volcanic flanks. We take into account, as a case study, the instability phenomena occurring on the Sciara del Fuoco (SdF, hereafter), a 2-km wide subaerial-submarine collapse scar filled by volcaniclastic products, which form the NW flank of the Stromboli volcano. Because of its steepness (> 30°) and the high amount of loose volcanic material funneled from the summit crater towards the sea, the submarine part of the SdF is prone to instability phenomena recurring at different spatial and temporal scale. Particularly, landsides with a volume of some millions of cubic meters, as the 2002 tsunamigenic landslide, can repeatedly affect the submarine slope. Based on the integration of 11 years (2002–2013) of morpho-bathymetric monitoring of the SdF with geotechnical characterization of volcaniclastic and lava flow materials, stability analyses of the subaerial and submarine slope and previous literature studies, we analyze the role of different triggering mechanisms in controlling the occurrence and size of submarine slope failures at the SdF, such as dykes intrusion as occurred in 2002 or the emplacement of a large delta as occurred in 2007. |
| Databáze: | OpenAIRE |
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