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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Aa AR, Sjåstad J, Sønstegaard E, Blikra LH (2007) Chronology of holocene rock-avalanche deposits based on schmidt-hammer relative dating and dust stratigraphy in nearby bog deposits, Vora, inner Nordfjord, Norway. Holocene 17(7):955–964
Blikra LH (2008) The Åknes rockslide; monitoring, threshold values and early-warning. Landslides and engineered slopes. From the past to the future. In: Zuyu C, Jian-Min Z, Ken H, Fa-Quan W, Zhong-Kui L (eds) Proceedings of the 10th international symposium on landslides and engineered slopes, Taylor and Francis, Xi’an, 30 June–4 July 2008, 1850pp, ISBN 9780415411967
Blikra LH, Longva O, Harbitz C, Løvholt F (2005) Quantification of rock-avalanche and tsunami hazard in Storfjorden, Western Norway. In: Senneset K, Flaate K, Larsen JO (eds) Landslides and avalanches: ICFL 2005 Norway. Taylor & Francis, London, pp 57–64
Böhme M, Henderson I, Saintot A, Hermanns RL, Henriksen H (2011) Rock-slope instability investigations in Sogn & Fjordane County, Norway: a detailed structural and geomorphological analysis. In: Jaboyedoff M (ed) Slope tectonics. Geological Society, London, pp 97–112, Special Publication, 351. ISBN 978-1-86239-324-0
Braathen A, Blikra LH, Berg SS, Karlsen F (2004) Rock-slope failures in Norway; type, geometry, deformation mechanisms and stability. Norw J Geol 84:67–88
Bunkholt H, Osmundsen PT, Redfield T, Oppikofer T, Eiken T, L’Hereux J-S, Hermanns RL, Laukens TR (2011) ROS Fjellskred i Troms: status og analyser etter feltarbeid 2010. NGU rapport 2011.031, ISSN 0800-3416, 135p
Bunkholt H, Nordahl B, Hermanns RL, Oppikofer T, Fischer L, Blikra LH, Anda E, Dahle H, Sætre S (2013) Database of unstable rock slopes in Norway. In: Margottini et al. (eds) Landslide science and practice, Springer, (in press)
Dahle H, Anda E, Sætre S, Saintot A, Böhme M, Hermanns RL, Oppikofer T, Dalsegg E, Rønning JS, Derron MH (2011) Risiko og sårbarheitsanalyse for fjellskred i Møre og Romsdal, 105p
Direktoratet for samfunnssikkerhet og beredskap (2011) Nasjonal sårbarhets- og beredskapsrapport 2011, ISBN 978-82-7768-246-4, 80p
Eisbacher GH, Clague JJ (1984) Destructive mass movements in high mountains: hazard and management. Geological Survey of Canada, Paper 84-16 (0-660-11729-0), 230p
Fenton CR, Hermanns RL, Blikra LH, Kubik PW, Bryant C, Niedermann S, Meixner A, Groethals MM (2011) Regional 10Be production rate calibration for the past 12 ka deduced from the radiocarbon-dated Grøtlandsura and Russenes rock avalanches at 69° N, Norway. Quat Geochronol 6(5):437–452 doi:10.1016/j.quageo.2011.04.005
Furseth A (2006) Skredulykker i Norge. Tun Forlag, Oslo, p 207p
Henderson IHC, Blikra LH (2008) Ustabile fjellparti i fyllittområde i Flåm – Aurland. NGU rapport 2008.033, ISSN 0800-3416, 16p
Henderson IHC, Saintot A (2011) Regional spatial variations in rockslide distribution from structural geology ranking: an example from Storfjorden, Western Norway. In: Jaboyedoff M (ed) Slope tectonics. Geological Society, London, pp 79–96, Special Publication, 351. ISBN 978-1-86239-324-0
Henderson IHC, Laukens TR, Osmundsen PT, Dehls JF, Larsen Y, Redfield TF (2011) A structural, geomorphological and InSAR study of fractures in the development of rock slope failures. In: Jaboyedoff M (ed) Slope tectonics. Geological Society, London, pp 185–201, Special Publication, 351. ISBN 978-1-86239-324-0
Hermanns RL, Blikra LH, Naumann M, Nilsen B, Panthi KK, Stromeyer D, Longva O (2006) Examples of multiple rock-slope collapses from Köfels (Ötz valley, Austria) and Western Norway. Eng Geol 83:94–108
Hermanns RL, Anda E, Henderson I, Dahle H, Saintot A, Blikra LH, Bøhme M, Dehls J, Redfield TF, Eiken T (2010) Towards a hazard classification system for large rock slope failures in Norway, European Geosciences Union, Vienna, 2–7 Mai 2010, Geophysical Research Abstracts. 12: EGU2010-13657
Hermanns RL, Bunkholt H, Böhme M, Fischer L, Oppikfer T, Rønning JS, Eiken T (2011) Foreløpig fare- og risikovudering av ustabile fjellparti ved Joasete-Furenkamben-Ramnanosi, Aurland commune. NGU rapport 2011.025, ISSN 0800-3416, 47p
Hermanns RL, Dahle H, Bjerke PL, Crosta G, Anda E, Blikra LH, Saintot A, Longva O, Eiken T (2013) Rock slide dams in Møre og Romsdal county, Norway: examples for the hazard and potential of rockslide dams. In: Margottini et al. (eds) Landslide science and practice, Springer, in press
Hermanns RL, Hansen L, Sletten K, Böhme M, Bunkholt H, Dehls JF, Eilertsen R, Fischer L, L’Heureux J-S, Høgaas F, Nordahl B, Oppikofer T, Rubensdotter L, Solberg I-L, Stalsberg K, Yugsi Molina FX (2012a) Systematic geological mapping for landslide understanding in the Norwegian context. In: Eberhardt E, Froese C, Turner AK, Leroueil S (eds) Landslide and engineered slopes: protecting society through improved understanding. Taylor & Francis Group, London, pp 265–271
Hermanns RL, Oppikofer T, Anda E, Blikra LH, Böhme M, Bunkholt H, Crosta GB, Dahle H, Fischer L, Jaboyedoff M, Loew S, Yugsi Molina F (2012b) Recommended hazard and risk classification for large unstable rock slopes in Norway. NGU rapport 2012.029, ISSN 0800–3416 53p
Lauknes TR, Piyush Shanker A, Dehls JF, Zebker HA, Henderson IHC, Larsen Y (2010) Detailed rockslide mapping in northern Norway with small baseline and persistent scatter interferometric SAR time series methods. Remote Sens Environ 114(9):2097–2109
Oppikofer T, Jaboyedoff M (2008) Åknes/Tafjord project: analysis of ancient rockslide scars and potential instabilities in the Tafjord area & Laser scanner monitoring of instabilities at Hegguraksla. IGAR report IGAR-TO-009, Institute of Geomatics and Analysis of Risk, University of Lausanne, Lausanne
Oppikofer T, Jaboyedoff M, Blikra LH, Derron M-H (2009) Characterization and monitoring of the Åknes rockslide using terrestrial laser scanning. Nat Hazard Earth Syst Sci 9:1003–1019
Oppikofer T, Jaboyedoff M, Pedrazzini A, Derron M-H, Blikra LH (2011) Detailed DEM analysis of a rockslide scar to improve the basal failure surface model of active rockslides. J Geophys Res 116:F02016. doi:10.1029/2010JF001807
Osmundsen PT, Henderson I, Lauknes TR, Larsen Y, Redfield TF, Dehls JF (2009) Active normal fault control on landscape and rock-slope failure in northern Norway. Geology 37(2):135–138. doi:10.1130/G25208A.1
Redfield TF, Osmundsen PT (2009) The Tjellefonna fault system of Western Norway; linking late-Caledonian extension, post-caledonian normal faulting, and tertiary rock column uplift with the landslide-generated tsunami event of 1756. Tectonophysics 474:106–123
Saintot A, Henderson IHC, Derron M-H (2011) Inheritance of ductile and brittle structures in the development of large rock slope instabilities: examples from Western Norway. In: Jaboyedoff M (ed) Slope tectonics. Geological Society, London, pp 27–78, Special Publication, 351. ISBN 978-1-86239-324-0
Sepulveda S, Serey A, Lara M, Pavez A, Rebolledo S (2010) Landslides induced by the April 2007 Aysén fjord earthquake, Chilean Patagonia. Landslides 7(4):483–492
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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