ABSTRACT
In the context of increasing demands from society for protection against natural catastrophes, risk mapping is a valuable assistance tool in decision making. When considering landslides, a number of hazard components are not operationally accessible. For this reason, international research programs should be developed around several themes, in particular the introduction of error calculations when defining potentially unstable areas, the inclusion of triggers in mapping, the determination of landslide propagation zones, and the use of 2D and 3D investigational methods. Beyond scientific and technical programs, methods for structuring data at different scales should be proposed, in order to provide operational responses to problems of land management, crisis preparation and management, and information. Finally, it is of utmost importance to utilize modem information exchange tools for making data available (GIS, databases, multimedia, the Internet).
