Low-Cost GNSS Solution for Continuous Monitoring of Slope Instabilities Applied to Madonna Del Sasso Sanctuary (NW Italy)

Davide, Notti; Cina, Alberto; Manzino, Ambrogio; Alessio, Colombo; Bendea, IOSIF HOREA; Paolo Mollo and Daniele Giordan,

doi:10.3390/s20010289

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In recent years, the development of low-cost GNSS sensors allowed monitoring in a continuous way movement related to natural processes like landslides with increasing accuracy and limited eorts. In this work, we present the first results of an experimental low-cost GNSS continuous monitoring applied to an unstable slope aecting the Madonna del Sasso Sanctuary (NW Italy). The courtyard of Sanctuary is built on two unstable blocks delimited by a high cli. Previous studies and non-continuous monitoring showed that blocks suer a seasonal cycle of thermal expansion and a long-term trend to downslope a few millimeters (2/3) per year. The presence of a continuous monitoring solution could be an essential help to better understand the kinematics of unstable slope. Continuous monitoring could help to forecast a possible paroxysm phase that could end with a failure of the unstable area. The first year of experimental measurements shows a millimetric accuracy of low-cost GNSS, and the long-term trend is in agreement with other monitoring data. We also propose a methodological approach that considers the use of semi-automatized procedures for the identification of anomalous trends and a risk communication strategy. Pro and cons of the proposed methodology are also discussed.

Titolo:	Low-Cost GNSS Solution for Continuous Monitoring of Slope Instabilities Applied to Madonna Del Sasso Sanctuary (NW Italy)
Autori:	Davide Notti CINA, Alberto MANZINO, AMBROGIO Alessio Colombo BENDEA, IOSIF HOREA Paolo Mollo and Daniele Giordan mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2020
Rivista:	SENSORS
Digital Object Identifier (DOI):	10.3390/s20010289
Appare nelle tipologie:	1.1 Articolo in rivista

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