Abstract
Historically, large rock slope failures impacting into a fjord and causing a several tens of metre high displacement wave have been one of the natural hazards in Norway claiming most lives. In the last 7 years, the Geological Survey of Norway has implemented a systematic mapping approach to characterize unstable rock slopes prone to catastrophic failures, so that future events can be recognized beforehand and society can adapt to the hazard. Systematic mapping has been carried out in three countries and more than 285 unstable slopes have been found. Of these sites, 62 are monitored periodically and 4 have been characterized as high risk objects with continuous monitoring systems installed. In order to classify the likelihood of a future event, rock slope mapping of each object includes the analyses of slide kinematic, velocity of the slide accompanied with other indicators of slide activity and an analysis of recurrence of previous events along the slope.
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Acknowledgments
We want to acknowledge the financial support of this mapping program by the Norwegian Water and Energy Directorate (NVE) and namely Graziella Devoli and Olianne Eikenæs for fruitful discussions throughout the years. We also want to acknowledge the fruitful discussion of the expert group working on the final document on the classification system namely: Jodi Corominas, Giovanni Crosta, Corey Froese, Sylfest Glimsdal, Carl Harbitz, Michel Jaboyedoff, and Simon Löw.
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Hermanns, R.L. et al. (2013). Systematic Mapping of Large Unstable Rock Slopes in Norway. In: Margottini, C., Canuti, P., Sassa, K. (eds) Landslide Science and Practice. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31325-7_3
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DOI: https://doi.org/10.1007/978-3-642-31325-7_3
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