Landslide Mapping Based on UAV Photogrammetry Using SfM—The Prnjavor Čuntićki Landslide Case Study, Croatia

The paper presents results of identification and mapping of the Prnjavor Cunticki landslide reactivated in March 2018 due to intensive rainfalls in Croatia. The described investigations included conventional landslide field mapping and visual mapping using high resolution digital terrain model derived from data captured by Unmanned Aerial Vehicle (UAV) and Structure from Motion (SfM). Identification of landslide contours and topography enabled back slope stability analysis that resulted in preliminary landslide model. The research results imply reactivation of large part of fossil landslide (about 25% of landslide area) and high risk due to potential damaging of houses and local road. Preliminary interpretation of landslide mechanism will be used for planning of landslide monitoring and early warning system.