MONITORING OF A LANDSLIDE IN VORARLBERG/AUSTRIA

Landslides and rock falls are disastrous processes of mass movements in alpine regions. Monitoring slowly creeping movements and their velocity variations enables the prediction of future risks. An interdisciplinary research-project located at Ebnit (Vorarlberg/Austria) deals with the combination of geologic, hydrologic and geodetic examinations. The project-partners need the topical kinematic behaviour of the slope to refine or to adjust the mechanical model within an interactive procedure. In summer 1995 a combined deformation network based on GPS and terrestrial measurements was installed and observed nearly quarterly. Until the end of the project in December 2001 fifteen epochs had been measured. The analysis results show a significant behaviour of the movements towards the valley. Another interesting result is the seasonal dependence of the movement direction in the wooded area of the slope. 1