Development of a methodological approach for the accurate measurement of slope changes due to landslides, using digital photogrammetry

This paper presents a method for studying recent landscape evolution due to mass movements. The method presented employs digital photogrammetric techniques, combined with global positioning system (GPS) measurements, to analyse landslide features depicted in aerial images taken by ad hoc and historical flights. The method was applied and validated in a 7 -km2 area, located on a south-facing slope of a tributary of the Pas River (Cantabrian...