The network monitoring system, which has been in operation on the Idro landslide, for several years, shows an average movement of 3 cm to 6 cm a year and defines a displacement area of approximately 270.000 m2. The volume estimation of the landslide is about 5 million cubic meters. The acceleration of the landslide movement is related to the raising of the water table which is linked to increased rainfall. Due to the necessity for a reliable early warning system, focus has been put on transmission reliability and the accuracy and precision of the sensors that have been positioned. Sensors used for motion checking are accurate and precise, giving coherent values between the different types of instruments. Numerous sensors have been set up in order to guarantee a redundancy for both number (we have installed various types of similar kinds of instruments) and variety (we have installed two or three kinds of instruments) of instruments while controlling deep and surface conditions. The analogy between deep soil data values and surface data values show us how movements deep soil data values and surface data values show us how movements seem to be located on only one surface being monitored by real-time deep inclinometers.

The network monitoring system, which has been in operation on the Idro landslide, for several years, shows an average movement of 3 cm to 6 cm a year and defines a displacement area of approximately 270.000 m2. The volume estimation of the landslide is about 5 million cubic meters. The acceleration of the landslide movement is related to the raising of the water table which is linked to increased rainfall. Due to the necessity for a reliable early warning system, focus has been put on transmission reliability and the accuracy and precision of the sensors that have been positioned. Sensors used for motion checking are accurate and precise, giving coherent values between the different types of instruments. Numerous sensors have been set up in order to guarantee a redundancy for both number (we have installed various types of similar kinds of instruments) and variety (we have installed two or three kinds of instruments) of instruments while controlling deep and surface conditions. The analogy between deep soil data values and surface data values show us how movements deep soil data values and surface data values show us how movements seem to be located on only one surface being monitored by real-time deep inclinometers.