ABSTRACT
This chapter analyses the relationship between groundwater level changes and the landslide displacements and velocities using data from the Vallcebrelandslide. The analysis is restricted to acceleration events occurring in the period between November 1996 and August 1998. The availability of continuous records of both velocities and groundwater table in monitored landslides has increased the interest of the scientific community for the dynamics of the slow moving landslides. The chapter analyses the role of the viscous component in large landslides by using ten years record of monitoring data from the Vallcebre translational landslide, located north of Barcelona. The Vallcebre landslide is a large, active slope failure located in the upper Llobregat river basin, in the Eastern Pyrenees, 140 km north of Barcelona, Spain. The landslide is situated on the western slope of the Serra de la Llacuna.
