Most of the carbonate relief of the Campania Region (southern Italy) are mantled by pyroclasticdeposits originated during eruptions of the Somma-Vesuvius and Phlegraean Fields volcaniccenters. Such deposits, commonly characterized by an alternation of ashy and pumiceous layers,have been frequently involved in high velocity flow/avalanche instabilities causing important lossof life and extensive damages (e.g. Guadagno et al., 2005; Revellino et al., 2013) to properties andinfrastructures.Their physical and stratigraphic characteristic, their geometry and spatial continuity and themorphology of the affected slope have been recognized to control the location of the source zoneand the triggering mechanisms (e.g. Guadagno et al., 2005; De vita et al., 2013). Especially, thethickness of the deposit and its internal architecture seems to be a key predisposing factor for thedevelopment of these instabilities (De Vita et al., 2006; 2013) and their knowledge is essential forthe analysis of landslide susceptibility.On this basis, in this work, we experiment multiple geophysical methods to characterize thegeometry and the stratigraphic characteristics of pyroclastic deposits covering the northern slope ofMount Vallatrone in Campania region (southern Italy). Especially, for our analysis we used HVSRmeasurement, MASW and GPR surveys. All of the surveys were completed along a section where adetailed stratigraphy, reconstructed using data from a hand excavated borehole, was available. Thisimprove our experimentation allowing a comparison/integration of the results.

Thickness and shallow structure of pyroclastic deposit from multiple geophysical methods, Mount Vallatrone, southern Italy.

TEDESCO, Piero;Guerriero L;Maresca R;Guadagno FM
2016

Abstract

Most of the carbonate relief of the Campania Region (southern Italy) are mantled by pyroclasticdeposits originated during eruptions of the Somma-Vesuvius and Phlegraean Fields volcaniccenters. Such deposits, commonly characterized by an alternation of ashy and pumiceous layers,have been frequently involved in high velocity flow/avalanche instabilities causing important lossof life and extensive damages (e.g. Guadagno et al., 2005; Revellino et al., 2013) to properties andinfrastructures.Their physical and stratigraphic characteristic, their geometry and spatial continuity and themorphology of the affected slope have been recognized to control the location of the source zoneand the triggering mechanisms (e.g. Guadagno et al., 2005; De vita et al., 2013). Especially, thethickness of the deposit and its internal architecture seems to be a key predisposing factor for thedevelopment of these instabilities (De Vita et al., 2006; 2013) and their knowledge is essential forthe analysis of landslide susceptibility.On this basis, in this work, we experiment multiple geophysical methods to characterize thegeometry and the stratigraphic characteristics of pyroclastic deposits covering the northern slope ofMount Vallatrone in Campania region (southern Italy). Especially, for our analysis we used HVSRmeasurement, MASW and GPR surveys. All of the surveys were completed along a section where adetailed stratigraphy, reconstructed using data from a hand excavated borehole, was available. Thisimprove our experimentation allowing a comparison/integration of the results.
978-88-940442-7-0
pyroclastic deposit
landslide susceptibility
near surface geophysics
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12070/11753
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