Browsing Norges Geotekniske Institutt by Subject "Avalanche-RnD"
Now showing items 341-360 of 382
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Spatio-temporal distribution of extreme weather events and natural hazards (snow avalanches and rockfalls) in Norway
(NGI-rapport;20091808-03-TN Rev. 1, Research report, 2013-05-15)The InfraRisk project is concerned with the impacts of extreme weather events (EWE) on the Norwegian transport infrastructure. Natural hazards triggered by EWE's are thereby of central concern. Transport routes running ... -
Statistical and geometrical definition of snow avalanche runout
(Journal article, 1987)Two mathematical models for calculating the extreme avalanche runout from a fixed reference point on the path are presented and contrasted. The models are: (1) estimates of confidence limits on regression analyses of ... -
Statistical avalanche zoning.
(The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 1984)Runout for the extreme event on an avalanche path is calculated from confidence limits on a regression analysis of path topographic parameters. This results in redefinition of the traditional zoning problem by dividing it ... -
Studies on the snow avalanche dynamics by the full-scale experiments
(Lecture, 2018)Systematic full-scale but small avalanche experiments have been started since 2016 in Niseko, a ski resort in Hokkaido, Japan. Although the vertical drop in the test sites are 100 to 200 m, they have advantages that we are ... -
Surface hoar characteristics derived from a snow micropenetrometer using moving window statistical operations
(Journal article, 2007)This study aims to improve analytical techniques for studying stratigraphic dimensions and hardness characteristics of thin weak layers in the mountain snowpack, with particular interest to buried surface hoar layers. By ... -
A survey of snow avalanche accidents in Norway.
(Norwegian Geotechnical Institute;203, Chapter, 1998)Available historical data relating to snow avalanche accidents in Norway have been examined, ranging from the 17th century to present. A near continuous record of avalanche deaths from 1855 is documented. From 1946, the ... -
The Svalbard fatal accident 19th December 2015 - Assisting local authorities in the acute phase
(The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2016)The Svalbard fatal avalanche caused massive destruction when it hit part of the village Longyearbyen Saturday morning at the start of the Christmas holiday. The avalanche released after a furious storm and killed to persons, ... -
A synoptic climatology of major avalanche winters in Norway
(Journal article, 1986)A near continuous record of avalanche deaths in Norway is compiled for 130 years from 1855, and shows a distinct downward trend, but large variations from winter to winter, with a periodicity of 12–13 years. Twelve major ... -
Sørpeskred - like destruktive som snøskred, men lite kjent
(Chapter, 1999)Sørpeskred - hurtigflytende masser av snø og vann - forårsaker hvert år store skader i Norge. En oversikt over Norges Geotekniske Institutt sin kunnskap om sørpekred, tilegnet gjennom 25 år med forskning og konsulentarbeid, ... -
Temperature gradient metamorphism and its relation with the avalanche release
(NGI Publication;203, Chapter, 1998)In winter there is a considerable amount of solid precipitation in the western part of Himalayas. Avalanche frequently occur here, and often endanger national economic construction and human life. Observations show that ... -
The temporal and spatial variation of snow pressure on structures
(Journal article, 1985)Measurements of snow creep pressure on an avalanche-defence structure in western Norway are presented. Two different types of measurement methods are described and evaluated. Pressure data from four winters are correlated ... -
Temporal changes in the spatial variability of shear strength and stability.
(The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2006)Avalanche forecasting involves the prediction of spatial and temporal variability of the snowpack. To predict avalanches with more accuracy it is important to determine whether the snowpack is becoming more spatially ... -
The 2017 rigopiano avalanche—dynamics inferred from field observations
(Peer reviewed; Journal article, 2020)This note first summarizes the history of the manuscript “On a Continuum Model for Avalanche Flow and Its Simplified Variants” by Grigorian and Ostroumov—published in this Special Issue—since the early 1990s and explains ... -
The Challenges of Mitigation Measures in Longyearbyen Svalbard
(Lecture, 2018)The Arctic regions are facing changes in climate; warmer weather and more intense precipitations are thought to be the consequences. Longyearbyen in Svalbard is one of those places where warmer weather has been influencing ... -
TIGRA. The integrated geological risk assessment. Hazard zoning methods of snow avalanches, debris flow and rock falls. Final report
(NGI-rapport;589210-03, Research report, 1997-11-20)The present report describes natural hazard zoning methods for snow avalanches in Norway and in some other countries were avalanches are a serious threat to the society. In addition methods for rock-fall and debris slide ... -
Traditional Sámi snow terminology and physical snow classification—Two ways of knowing
(Journal article, 2012)Humans describe the natural environment on the basis of their local experience and their interactions with nature in terms of its relevance to their daily lives. These descriptions are incorporated into local languages and ... -
Transferring avalanches between paths
(NGI Publication;203, Chapter, 1998)Estimates of exceedance probabilities of runout lengths of avalanches for a specific path can rarely be based on measured avalanches in that slope alone, if they are to become statistically reliable. Thus one has, directly ... -
Triaksialforsøk på snø
(NGI-rapport;58101-03, Research report, 1978-01-01)Vinteren 1978 ble det montert triaksialapparatur på NGI's skredstasjon i Grasdalen. I midten av mars ble det kjørt en serie forsøk. Undersøkelsene må betraktes som pilotforøk, og ikke tillegges en så stor nøyaktighet. ... -
Trykkvirkninger av skred
(Chapter, 1979)Masse i bevegelse følger de generelle fysiske grunnprinsipper: K = m . a (newtons 2 . lov).... -
Twenty-five years of snow and avalanche research at NGI: Geotechnique contributions.
(NGI Publication;203, Chapter, 1998)In this paper, I wish to review the far reaching contributions from snow and avalanche research at NG! over the last 25 years. My review is based on my own association with the research at NGI (24 years) as well as the ...