Sepe, C., Calcaterra, D., Cecconi, M., Di Martire, D., Pappalardo, L., Scarfone, R. , Vitale, E. and Russo, G. (2021) Capillary barriers during rainfall events in pyroclastic deposits of the Vesuvian area. Geosciences, 11(7), 274. (doi: 10.3390/geosciences11070274)
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Abstract
In the present paper, the capillary barrier formation at the interface between soil layers, which is characterized by textural discontinuities, has been analyzed. This mechanism has been investigated by means of a finite element model of a two-layer soil stratification. The two considered formations, belonging to the pyroclastic succession of the “Pomici di Base” Plinian eruption (22 ka, Santacroce et al., 2008) of the Somma–Vesuvius volcano, are affected by shallow instability phenomena likely caused by progressive saturation during the rainfall events. This mechanism could be compatible with the formation of capillary barriers at the interface between layers of different grain size distributions during infiltration. One-dimensional infiltration into the stratified soil was parametrically simulated considering rainfall events of increasing intensity and duration. The variations in the suction and degree of saturation over time allowed for the evaluation of stability variations in the layers, which were assumed as part of stratified unsaturated infinite slopes.
Item Type: | Articles |
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Keywords: | Pyroclastic soils, infiltration, capillary barriers, stability analysis. |
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Scarfone, Riccardo |
Creator Roles: | |
Authors: | Sepe, C., Calcaterra, D., Cecconi, M., Di Martire, D., Pappalardo, L., Scarfone, R., Vitale, E., and Russo, G. |
College/School: | College of Science and Engineering > School of Engineering |
Journal Name: | Geosciences |
Publisher: | MDPI |
ISSN: | 2076-3263 |
ISSN (Online): | 2076-3263 |
Published Online: | 29 June 2021 |
Copyright Holders: | Copyright © 2021 The Authors |
First Published: | First published in Geosciences 11(7): 274 |
Publisher Policy: | Reproduced under a Creative Commons License |
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