ABSTRACT
Detailed, accurate and complete digital landslide maps are still rarely available. Nevertheless, such maps are essential for recovery and documentation after landslide-triggering events, for landslide monitoring and for hazard and risk mapping. These tasks concern national and federal authorities, owners, maintainers and insurers of infrastructure, and ultimately the public. The increased availability and quality of Earth Observation (EO) data, in combination with efficient image analysis techniques, foster semi-automated mapping approaches. Apart from the challenge of generating valid landslide information (e.g. landslides mapped as polygons including metadata, landslide-affected infrastructure) based on various optical satellite imagery, ways have to be found to make landslide information products accessible to the stakeholders. Here, we present the user requirements analysis for an innovative EO-based landslide information web service which will allow for fast and efficient provision of landslide information products. The need for such a service was confirmed by practitioners. The identified requirements were considered suitable for the planned development of a pre-operational web service for selected study areas in the Alps (Austria, Italy), which are highly susceptible to weather-induced landslides.
