Multitemporal Surface Deformation Analysis of Amyntaio Slide (Greece) using Remotely Piloted Airborne System and Structure-from-Motion photogrammetry. Proceedings 4th Joint International Symposium on Deformation Monitoring (JISDM), 15-17 May 2019, Athens, Greece.

The results of Structure‐from‐Motion photogrammetry for the quantification of the ground surface deformation due to the massive landslide that occurred at the lignite open pit in Amyntaio, Greece on 10th June 2017, is presented in this paper. This unexpected slide damaged the entire westernmost marginal area of the pit, significant number of buildings and infrastructures (incl. road network, powerlines, biological treatment, houses etc.) of the nearby village of Anargiri, as well as agricultural land at the head of the landslide. We generated a very high‐resolution surface topography and corresponding co‐registered ortho‐rectified images covering a total area of 2 km2 by analyzing images acquired from Remotely Piloted Airborne Systems (RPASs). A high resolution (0.13 m) Digital Surface Model (DSM) was produced after photogrammetric processing, serving as a reference dataset for comparison with other surveys realized on December 2017 and September 2018. We compared the high‐resolution DSMs acquired during the post landslide periods, quantified the overall ground deformation and finally delineated regions of potential risk.