%0 Journal Article %T REPEATED PHOTOGRAMMETRIC MEASUREMENTS AT SHAPING GEOTECHNICAL MODELS OF MULTI-LAYER LANDSLIDES %A £¿elimir Ortolan %A Jonatan Ple£¿ko %J Rudarsko-Geolo£¿ko-Naftni Zbornik %D 1992 %I University of Zagreb %X Repeated photogrammetric measurements are a valuable source of conserved information during final shaping of geotechnical models of complex multi-layer landslides. Photogrammetric measurements of a sequence of detailed unchanged points enable establishing the clear limit between the moved and stable parts of the terrain. The paper provides a number of practical and theoretical findings resulting from an adequate interpretation of photogrammetric measurements made on a thoroughly analyzed landslide where a three-level slide was observed. The results obtained indicate that the method used in this paper should be adopted as a standard procedure. %K Repeated photogrammetric measurements %K Displacement vector %K Geotechnical models %K Multi-layer landslides %U http://rgnzborad.rgn.hr/4_REPEATED_PHOTOGRAMMETRIC_MEASUREMENTS.pdf