Closing the gap from spatio-temporal displacement monitoring to geochemical process understanding of cascading multi-hazards caused by deep-seated gravitational slope deformations
Active deep-deated gravitational slope deformations (DSGSDs) and interlinked secondary processes such as rockfalls and debris flows pose multiple threats to livelihoods in mountain regions. A currently active part (ca. 0,35 km²) of the Reissenschuh DSGSD (Schmirn valley, Tyrol, Austria) shows considerable displacement rates of about 1 m per year. This remarkable relocation of material constantly changes the topography and leads to pronounced activity of debris flow and rockfall at the landslide toe. This contribution focuses on understanding the interactions of DSGSD activity (rock mass supply) and interlinked cascase dynamics to assess their complex triggering mechanisms and related secondary processes. I gives an overview of previous and ongoing monitoring campaigns and presents preliminary findings on cascade process interactions.
