The Gardiola in situ ground deformation time series include deformation data from the topographic monitoring network, installed on the Gardiola landslide. In particular, provide the differential displacement (in cm), of planimetric and altimetric displacement, for each prism of the network. The archive provide time series of twenty-three optical target, for an observed period from March 2004 to April 2009. The time series present a very high temporal sampling (hourly), and provide the differential displacement for the planimetric (Δxy) and altimetric (Δz) displacement (in cm). All the spikes interpreted as noise were been delete to the time series.

The Gardiola landslide is a complex slide activated on 14-16 October 2000 located in the central part of the Germanasca Valley, in Salza di Pinerolo municipality (TO, Piedmont – northern Italy). This landslide consists of several sector with different kinematic: a portion reactivated during 2000, characterized by prevalent translational movement, and a low rotational component due to the foot erosion operated by the Germanasca torrent. A portion on the left side of this sector, that present a rotational component, was identified as the mainly active sector of the landslide during a survey in 2003. At the slope scale, the Gardiola landslide is included in a more extensive gravitative event, a quiescent event reported in the IFFI catalogue (IFFI project, Piedmont Region), extended from 1450 m to 1200 m asl. In the opposite side of the valley, in front of the landslide, was identified another quiescent landslide, extend from 1600 m asl to the bottom of the valley, at 1180 m asl. Starting from March 2004, a permanent topographic monitoring network has been installed on the landslide, with a robotic total station located on the opposite side of the valley. The landslide was monitored from March 2004 to April 2009.

At the Gardiola landslide a topographic monitoring network has been installed on March 2004. The topographic network consists of a robotic total station (LEICA TCA 2003 with ATR - Automatic Target Recognition), located on the opposite valley side, and associated to a radio modem that allows download of the data by remote connection in a station located at Pomeifrè (1.5 km northeast to the test site and equipped by a PSTN connection), twenty-three optical target, and three reference points outside the landslide, located on stable ground. The topographic network recorded from March 2004 to April 2009, with a temporal sampling of an hour. The monitoring network allowed several automatic displacement measurements of the prisms installed, using a robotic total station Leica TCA 2003. This high-performance instrument for the ground displacement surveying, allow to measure the angle (Hz and V) and distance measurement. Data collected by this total station permit to improve knowledge on surface ground deformation, and the geomorphological evolution of the landslide. In particular, the TCA 2003 total station used is characterized by: - Angle-measurement accuracy: Standard deviation (ISO 17123-2) of 0.5” (0.15 mgon); - Distance measurement (IR): Standard deviation (ISO 17123-4) 1mm + 1 ppm; Range 2.500 m, under average atmospheric conditions, i.e. visibility 15 km. - Automatic target recognition (ATR), under good atmospheric conditions: Accuracy at below 200 m of 1 mm; Accuracy at 500 m of 2 mm – 3 mm. For more information: http://www.leica-geosystems.com/downloads123/zz/tps/tps2000/brochures/tps2000_brochure_it.pdf