MONITORING NATURAL SLOPES BY TERRESTRIAL DIGITAL IMAGE CORRELATION: PRELIMINARY RESULTS

The efficacy of Terrestrial Digital Image Correlation technique for the monitoring of landslide movement has been investigated by laboratory and field experiments. Three laboratory experiments and three field tests (namely La Pineda, Frosinone and Sfalassà landslides) have been performed. Preliminary achieved results demonstrated the capability of DIC to detect and to measure surface displacement affecting natural slopes. As expected, the increasing monitoring distance strongly influence the accuracy of the system, but other factors proved to be relevant such as the camera repositioning and the lighting conditions during the images collection. Results achieved by DIC results was confirmed in some cases by other monitoring techniques (e.g. TInSAR), but showing lower accuracy (on the other of cm to dm).