Field hydrological monitoring of a sloping shallow pyroclastic deposit

Author:

Comegna Luca11,Damiano Emilia11,Greco Roberto11,Guida Andrea11,Olivares Lucio11,Picarelli Luciano11

Affiliation:

1. Department of Civil Engineering, Design, Building and Environment, Seconda Università degli Studi di Napoli, via Roma 29, 81031 Aversa (CE), Italy.

Abstract

Many mountainous areas in Campania, southern Italy, are characterized by steep slopes covered by unsaturated volcanic deposits. Shallow landslides are frequently triggered by intense and persistent rainfall events, often turning into debris flows that cause huge damage and casualties. Field hydrological monitoring is a useful tool to develop consistent models of slope response to rainfall, in terms of soil suction and moisture, and to define landslide triggering conditions. This is one of the reasons why since 2002 field monitoring is being carried out in Cervinara, around 50 km northeast of Naples. Since October 2009, rainfall height, soil suction and water content at several locations and depths along the slope are automatically being monitored. The data collected help to demonstrate the effectiveness of such a system for better understanding the hydrological processes occurring in similar slopes of Campania, allowing to distinguish between seasonal suction fluctuations, related to long-term meteorological forcing, and short-term response to rainstorms.

Publisher

Canadian Science Publishing

Subject

Civil and Structural Engineering,Geotechnical Engineering and Engineering Geology

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