Blar i Norges Geotekniske Institutt på emneord "Avalanche-RnD"
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3D modelisation of snow slabs stability.
(NGI Publication;203, Chapter, 1998)Snow slabs stability is a real problem to study in a mecanical point of view. A non exhaustive review of the different factors used to evaluate this stability or instability is done. All of them have been done in two ... -
Accoustic snow drift measurements: Experiences from the FlowCapt instrument
(Journal article, 2001)Three acoustic FlowCapt™ (IAV Engineering) drifting snow instruments were deployed during the 1999 and 2000 field season on Spitsbergen, Norway. Three different experiments were carried out to test the instruments for their ... -
Acoustic sensor to measure snowdrift and wind velocity for avalanche forecasting
(NGI Publication;203, Chapter, 1998)A new mathematical model of slushflow dynamics is developed. A slushflow is treated as a two-layer flow. The lower layer consists of pure liquid phase (water) and the upper layer is a floating water saturated snow (slush). ... -
Activities of the Japanese-Norwegian collaboration of snow avalanche research during the winters 1990/1991 and 1991/1992. Final report
(NGI-rapport;58120-29, Research report, 1993-03-05)The report gives a brief summary of the activities carried out by the Japanese - Norwegian collaboration on snow avalanche reasearch during the winters of 1990/1991 and 1991/1992. The research was mainly carried out in the ... -
Activities of the Japanese-Norwegian collaboration on snow avalanche research, march 1991
(NGI-rapport;58120-23, Research report, 1991-08-01)The report gives a brief summary of the activities carried out by the Japanese - Norwegian collaboration on snow avalanche reasearch during the winter of 1990/19991. The research was mainly carried out in the Ryggfonn ... -
All-weather avalanche activity monitoring from space?
(The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2014)Information on avalanche activity or on non-activity on local and regional scale is of great value for avalanche warning services, traffic authorities and experts responsible for safety in communities or ski resorts. In ... -
Analyse av værforhold ved utvalgte skredsituasjoner i Ørsta
(NGI-rapport;58308-22, Research report, 1981-03-17)The meteorological phenomena of avalanches in Nivane, ørsta, Norway, for the period from 1960 to 1980 and for the years 1941 and 1942 have been analysed. We have analysed the meteorological phenomena of some situations ... -
Analysis of an artificially triggered avalanche at the nepheline syenite mine on Stjernøya, Alta, Northern Norway
(The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2014)Since 1961, a Nepheline Syenite mine is operated on the island of Stjernøya in the Altafjord, Northern Norway. The facilities are located in Lillebukt, on the southern side of the island. Above the facilities, the Nabbaren ... -
Analysis of avalanche measurements out of the runout area of NGI's full-scale test-site Ryggfonn
(Journal article, 2009)The paper summarizes measurements and observations of dry-snow avalanches at the Ryggfonn test-site with respect to their behavior in the runout area. Measurements of front velocities and retarding accelerations are presented ... -
Annual Report 2017 [SP 4 FoU Snøskred]
(NGI-rapport;20170131-05-R, Research report, 2018-01-12)During the first year of the project period 2017–2019 of NGI's research project on snow avalanches, work was carried out in all five work packages (WP 1 – Ryggfonn and model development, WP 2 – Statistical tools, WP 3 – ... -
Annual Report 2018 [SP 4 FoU Snøskred]
(NGI-rapport;20170131-11-R, Research report, 2018-12-21)In the second year of the present three-year project period, core and/or long-term activities were continued: -experiments at Ryggfonn and maintenance of the site, -infrasound monitoring along State Road 15 between Fonnbu ... -
Annual Report 2019 [SP4 FoU Snøskred]
(NGI-rapport;20170131-17-R, Research report, 2020-05-28)NGI has conducted research on avalanches and related processes since 1973. This report gives a short insight in the work done in 2019. While experiments with artificial release of avalanches in the Ryggfonn experimental ... -
Annual Report 2020
(NGI-Rapport;20200017-02-R, Research report, 2021-03-19)During the first year of the project period 2020-2022 of NGIs research project on Snow avalanches, Applied Avalanche Research in Norway (AARN), work was conducted in all three work packages (WP 1 – Avalanche formation and ... -
Annual Report 2021
(NGI-Rapport;20200017-03-R, Research report, 2022-04-08)During the second year of the project period 2020-2022 of NGIs research project on snow avalanches, Applied Avalanche Research in Norway (AARN), work was conducted in all three work packages (WP 1 – Avalanche formation and ... -
Anvendelse av risikoanalyse i skredfarevurderingen
(Chapter, 1979)Trange dalfører og bratte fjellsider er svært vanlig i vart land og i fjord~ og dalstrøkene,særlig pa Vestlandet og i Nord-Norge er naturødeleggelse i form av skred en realitet. I mange dalfører er f.eks gärdsbebyggelsen ... -
APALI – Avalanche Probability Along Linear Infrastructure
(NGI-Rapport;20200431‐01‐TN, Research report, 2023-09-28)To secure linear infrastructure in the most cost-efficient manner, hazard hot-spots need to be known not only with regard to the intensity of possible events but also their probability. Traditional hazard mapping methods ... -
Applied Avalanche Research in Norway: Fonnbu 50-year celebration
(NGI-Rapport;20230100-02-R, Research report, 2023-11-10)NGI’s avalanche research station at Strynefjellet in western Norway was officially opened in October 1973, and in September 2023 NGI and the AARN project invited to a 3- day celebration in Stryn. The aim of the celebration ... -
Assessing the risk posed by natural hazards to infrastructures
(Peer reviewed; Journal article, 2017)This paper proposes a model for assessing the risk posed by natural hazards to infrastructures, with a focus on the indirect losses and loss of stability for the population relying on the infrastructure. The model prescribes ... -
Associations between shear strength of a buried surface hoar layer and stratigraphic, topographic and vegetation characteristics on a uniform slope. Extended abstract
(The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2006)In this study we quantify 1) changes in spatial and aspatial characteristics of the shear strength of a buried surface hoar layer, and 2) identify characteristics in terrain, vegetation and snow stratigraphy that can help ... -
Automated Avalanche Deposit Mapping From VHR Optical Imagery
(The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2012)Using eCognition we developed an algorithm to automatically detect and map avalanche deposits in Very High Resolution (VHR) optical remote sensing imagery acquired from satellites and airplanes. The algorithm relies on a ...