Landslide risk management in Norway

Kalsnes, Bjørn; Nadim, Farrokh; Hermanns, Reginald L.; Hygen, Hans Olav; Petković, Gordana; Dolva, Bjørn Kristoffer; Berg, Hallvard; Høgvold, D.O.

doi:10.1201/9781315387789-7

Cited by 6 publications

(3 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Norway, it is the most frequent recorded type due to the impact they produce in society. The Norwegian historical LDB accounts for 51,161 landslide records from which 56% are falls (Kalsnes et al 2016). The unstable rock slope LDB accounts for 250 records with postglacial deformation that can potentially result in rock avalanches (Oppikofer et al 2015).…”

Section: Fallsmentioning

confidence: 99%

Landslide databases in the Geological Surveys of Europe

et al. 2017

View full text Add to dashboard Cite

Landslides are one of the most widespread geohazards in Europe, producing significant social and economic impacts. Rapid population growth in urban areas throughout many countries in Europe and extreme climatic scenarios can considerably increase landslide risk in the near future. Variability exists between European countries in both the statutory treatment of landslide risk and the use of official assessment guidelines. This suggests that a European Landslides Directive that provides a common legal framework for dealing with landslides is necessary. With this long-term goal in mind, this work analyzes the landslide databases from the Geological Surveys of Europe focusing on their interoperability and completeness. The same landslide classification could be used for the 849,543 landslide records from the Geological Surveys, from which 36% are slides, 10% are falls, 20% are flows, 11% are complex slides, and 24% either remain unclassified or correspond to another typology. Most of them are mapped with the same symbol at a scale of 1:25,000 or greater, providing the necessary information to elaborate European-scale susceptibility maps for each landslide type. A landslide density map was produced for the available records from the Geological Surveys (LANDEN map) showing, for the first time, 210,544km 2 landslide-prone areas and 23,681 administrative areas where the Geological Surveys from Europe have recorded landslides. The comparison of this map with the European landslide susceptibility map (ELSUS 1000 v1) is successful for most of the territory (69.7%) showing certain variability between countries. This comparison also permitted the identification of 0.98Mkm 2 (28.9%) of landslide-susceptible areas without records from the Geological Surveys, which have been used to evaluate the landslide database completeness. The estimated completeness of the landslide databases (LDBs) from the Geological Surveys is 17%, varying between 1 and 55%. This variability is due to the different landslide strategies adopted by each country. In some of them, landslide mapping is systematic; others only record damaging landslides, whereas in others, landslide maps are only available for certain regions or local areas. Moreover, in most of the countries, LDBs from the Geological Surveys co-exist with others owned by a variety of public institutions producing LDBs at variable scales and formats. Hence, a greater coordination effort should be made by all the institutions working in landslide mapping to increase data integration and harmonization.

show abstract

Section: Fallsmentioning

confidence: 99%

Landslide databases in the Geological Surveys of Europe

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The report titled Climate in Norway 2100 (NCCS, 2017) indicates that gradually increasing temperatures, increased precipitation and extreme rainfall, and increased floods in the future may cause more quick clay slides in certain areas in Norway. Furthermore, some flood and landslide events have been studied to improve risk and crisis management related to natural hazards (Devoli et al, 2018;Kalsnes et al, 2017;Steen & Ferreira, 2020).…”

Section: Introductionmentioning

confidence: 99%

The Impact of Interorganizational Collaboration on the Viability of Disaster Response Operations: The Gjerdrum Landslide in Norway

Steen,

Roud,

Mikkelrud Torp

et al. 2023

Preprint

View full text Add to dashboard Cite

“…Rainfall has been identified as the main landslide-triggering mechanism and the main case of reactivation of dormant slides in Spain (Corominas et al, 2015). Similarly, Kalsnes et al (2015) has identified surface erosion during short intense storm and slow build-up of pore-water pressure over longer periods of lower intensity rainfall to be the main causes of most landslides in Norway. Picarelli et al (2015) in Italy also echoed the same message that higher triggering precipitation events require lower cumulative 29-day antecedent precipitation.…”

Section: Introductionmentioning

confidence: 99%

Stability of unsaturated soil slopes covered with Melastoma malabathricum in Singapore

Satyanaga

Rahardjo

2019

Proceedings of the Institution of Civil Engineers - Geotechnica

View full text Add to dashboard Cite

Past studies have shown that slopes covered with vegetation are less susceptible to rainfall-induced slope failures. This research was focused on the unsaturated properties of soil consisting of mangrove roots and their effects on the stability of an old alluvium soil slope during rainfall. Melastoma malabathricum was selected in this study since this mangrove is best suited for tropical climatic conditions. The results of laboratory tests indicated that the air-entry value and shear strength of soil with roots of M. malabathricum were higher than those of the soil without roots. The saturated permeability of the soil with roots was lower than that of the soil without roots. Numerical analyses indicated that the slope without M. malabathricum experienced significant decreases in the factor of safety during rainfall than the slope covered with M. malabathricum. M. malabathricum can thus be used as a vegetative cover for minimising rainwater infiltration in slope layers with a slope angle up to 35°.

show abstract

Landslide risk management in Norway

Cited by 6 publications

References 13 publications

Landslide databases in the Geological Surveys of Europe

Landslide databases in the Geological Surveys of Europe

The Impact of Interorganizational Collaboration on the Viability of Disaster Response Operations: The Gjerdrum Landslide in Norway

Stability of unsaturated soil slopes covered with Melastoma malabathricum in Singapore

Contact Info

Product

Resources

About