Fusco, Francesco (2017) Hydrological monitoring and modeling of pyroclastic soil covers for assessing debris flows hazard in volcanic and peri-volcanic areas of Campania region (southern Italy). [Tesi di dottorato]

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Item Type: Tesi di dottorato
Lingua: English
Title: Hydrological monitoring and modeling of pyroclastic soil covers for assessing debris flows hazard in volcanic and peri-volcanic areas of Campania region (southern Italy)
Creators:
CreatorsEmail
Fusco, Francescofrancesco.fusco@unina.it
Date: 7 April 2017
Number of Pages: 202
Institution: Università degli Studi di Napoli Federico II
Department: Scienze della Terra, dell'Ambiente e delle Risorse
Dottorato: Scienze della Terra, dell'ambiente e delle risorse
Ciclo di dottorato: 29
Coordinatore del Corso di dottorato:
nomeemail
Fedi, Mauriziofedi@unina.it
Tutor:
nomeemail
Calcaterra, DomenicoUNSPECIFIED
De Vita, PantaleoneUNSPECIFIED
Date: 7 April 2017
Number of Pages: 202
Uncontrolled Keywords: Hydrological monitoring; Hydrological modeling; Debris flow; Deterministic rainfall thresholds; Landslide susceptibility maps; Ash-fall pyroclastic deposits; Hillslope hydrology
Settori scientifico-disciplinari del MIUR: Area 04 - Scienze della terra > GEO/05 - Geologia applicata
Date Deposited: 06 May 2017 07:50
Last Modified: 14 Mar 2018 10:08
URI: http://www.fedoa.unina.it/id/eprint/11571
DOI: 10.6093/UNINA/FEDOA/11571

Abstract

The shallow landsliding involving pyroclastic coverings mantling peri-Vesuvian and Phlegraean slopes (Campania region, southern Italy) represent a challenging theme which can be analyzed through different approaches. These landslides are characterized by a series of processes whose triggering mechanisms are affected by geological, geomorphological and hydrological factors. Due to the aim of this research project, the manuscript was organized considering results of the research activities carried out for two sample areas of the Campania region, which are affected by the same type of geohazard. Different geological settings and similar geomorphological features which characterize Phlegraean and peri-Vesuvian slopes were described, shifting attention mostly about the origin of the pyroclastic soils involved by slope instabilities. In particular, volcano-tectonic activity occurred in the Campanian Plain was described, analyzing the evolutionary phases of two main volcanic districts of the area: the Somma-Vesuvius volcano and Phlegraean Fields volcanic district. After this introduction, hydrological and slope stability processes were described to define the predisposing and triggering features of rainfall-induced flow-type landslides, as well as their rheology and kinematics. For these reasons, a detailed description of the hydrological slope processes, related to rainfall events, and hydro-mechanical properties of the involved materials were described. In addition, following the different landslide classifications, these slope instabilities were described. Finally, to underline the relevance of this geohazard, which strongly affect the urban settlements located at the foothill of peri-Vesuvian mountains and Phlegraean slopes, main documented historical and recent cases of landslide events were shown. The main section of this manuscript is represented by the description of the methods and results of the hydrological monitoring and numerical modeling activities. In detail, settings of field monitoring stations, located in the two sample areas, and the reconstruction of physically-based models, used for the hydrological modeling at slope and regional scale, were described. As a final result, rainfall thresholds, by using a deterministic approach, and landslide susceptibility maps were estimated. Finally, results were analyzed and then discussed by comparison with results from prior literature.

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