ABSTRACT

The presentation of the six most important case studies considered in the IMIRILAND Project shows that all sites imply a clearly hazardous situation which may induce significant damageable consequences in some of the studied scenarios. However, the assessment of the hazard intensity carried out in Chapters 4-9 cannot be considered as equally reliable in all cases. Indeed, several factors may impair the quality of the analyses developed:

– At several sites, a lack of basic data which could be technically obtained by field observation, long-term comprehensive monitoring and, if possible, boreholes including geotechnical laboratory tests and groundwater measurements, but which are not available for several reasons, implies the necessity of formulating hypotheses in order to determine the characteristics of the landslide mechanisms and then to model landslide behaviour. Some of these hypotheses are soundly based on careful geological, morpho-structural and geomorphological investigations, but the degree of uncertainty of the resulting models is difficult to quantify.