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Landslide consequence analysis - valuing consequences and mapping expected losses in the Göta river valley
Swedish Geotechnical Institute.
Swedish Geotechnical Institute.
Swedish Geotechnical Institute.
2012 (English)In: Proceedings of the 16th Nordic Geotechnical Meeting, NGM 2012, 16, Copenhagen, 9-12 May, 2012, Copenhagen: Dansk Geoteknisk Forening, DGF , 2012, Vol. 2, p. 659-666Conference paper, Published paper (Refereed)
Abstract [en]

Landslide risks are expected to increase with climate change in large parts of Sweden due to increased annual precipitation, more intense precipitation and increased flows combined with drier summers. In response to this, on commission of the Ministry of Environment, the Swedish Geotechnical Institute is at present performing a risk analysis of the most prominent landslide risk area in Sweden: the Göta river valley. Elements at risk include human life, transport (shipping, road and rail road) and other infrastructure, residential and other properties, commercial and industrial activities, contaminated land and intangibles such as biodiversity. The Göta river valley landslide risk analysis is performed as two parallel parts: stability / probability analysis and consequence analysis. Maps of geographically distributed landslide probabilities and consequences will be produced and merged into a risk map with three classes using a risk matrix. Focusing on the consequences of landslides this paper aims to describe the methodology developed for this regional consequence analysis and to visualize some results. Expected losses following a landslide are estimated based on the exposure, vulnerability and monetary value of each element at risk. GIS aids to the consequence analysis in a number of ways; in using existing spatial databases to quantify expected consequences, calculating expected monetary losses and visualizing results. The resulting risk map will be used in the surveillance of the landslide safety in the Göta river valley. Results can also provide municipal land use planners with a synoptic view of landslide risks in the valley. The consequence analysis methodology developed within this project can be applied from local to national level and for several types of natural hazards such as landslides, erosion and flooding.

Place, publisher, year, edition, pages
Copenhagen: Dansk Geoteknisk Forening, DGF , 2012. Vol. 2, p. 659-666
Keywords [en]
Landslide, Slope, Stability, Risk management, Risk assessment, Probability, Vulnerability, Error, GIS, Mapping, River, Göta älv, Sweden, Conference, Copenhagen, 2012, English
National Category
Geotechnical Engineering
Identifiers
URN: urn:nbn:se:swedgeo:diva-848Local ID: 000075909OAI: oai:DiVA.org:swedgeo-848DiVA, id: diva2:1362804
Conference
16th Nordic Geotechnical Meeting, NGM 2012, Copenhagen, 9-12 May, 2012
Note

Dansk Geoteknisk Forening, DGF Bulletin 27

Available from: 2019-10-21 Created: 2019-10-21 Last updated: 2019-10-21

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  • apa
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