ANALYSIS OF GULLY EROSION IN A CATCHMENT AREA IN OLIVE GROVES USING UAS PHOTOGRAMMETRY TECHNIQUES

This study analyzes the dynamics of two landslides in the city of Loja – Ecuador using GNSS and RPAS techniques. GNSS technique allowed the measurement of horizontal and vertical displacements and the RPAS technique obtained high-resolution orthophotos and digital surface models. Models were oriented with ground control points. Based on the field information and the results obtained, the two landslides present low speeds and due to their behavior, they can be classified as very slow flows.