Monitoring the knes Rock Instability, Norway

The knes rock instability at Storfjorden, western Norway, has the potential to form a major rock avalanche and create a tsunami with devastating impact to the settlements around the fjord. The most feasible mitigation measure to this hazard is monitoring as large rock avalanches are usually forecasted by an acceleration of displacement. The knes/Tafjord Early Warning Centre is responsible for monitoring of knes rock instability. Here we present the monitoring concepts, measurements of displacement and the early warning system.