ABSTRACT
The Aknes/Tafjord project, lead by the involved municipalities and the county, is going to take care of investigations, monitoring and early warning related to large unstable rockslopes in Storfjorden in western Norway. The project has established several monitoring systems in the unstable areas of Åknes and Hegguraksla. The Aknes/Tafjord project is a large investigation, monitoring and early-warning project related to some large unstable rockslopes in western Norway. The risk is due to the generation of large tsunamis when rockslides plunge into the fjords. The Aknes rockslide is situated within the Western Gneiss Region, dominated by gneiss of Proterozoic age. The bedrock at Aknes composes different types of gneisses, but the dominating types is medium grained granitic gneiss to a dark grey biotite bearing granodiorite gneiss. The Aknes/Tafjord project has as a start chosen to use velocity-based threshold values.
