This paper describes the technical instrumentation used by the ILEWS Project to build up alandslide early warning system. Measurements of landslide movement and soil-water-status are conducted andintegrated into a physically-based slope stability model for continuous calculation of slope stability and intosurface-analysis early warning model. Beside the technical early warning system the ILEWS Project followsan integrative approach,also including social scientists,spatial planners and historians. The overall goal is toprovide a complete warning chain,including in-situ measurements described in this contribution,data handling,automated but supervised analysis,warning and consequent communication and decision making.
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