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Reinunga, Aurland. Snøskredulykke 3. mars 2004
(NGI-rapport;20041154-01, Research report, 2004-03-26)A derivation is given for the equation of thermodynamic equilibrium between ice and water in porous media. The equation accounts for a difference between the pressure of the ice phase and the total potential (in pressure ... -
REMEDY - et BegrensSkade prosjekt. Sluttrapport
(NGI-rapport;20170774-01-R, Report, 2023)BegrensSkade-prosjektene har vært bransjeomfattende forskningsprosjekt finansiert av Norges forskningsråd samt private aktører i byggenæringen. Det første BegrensSkade prosjektet startet i 2012, og med avslutningen av ... -
Remote Identification, Characterization and Monitoring of Erosional Processes
(NGI Rapport;20170031-03-R, Report, 2018-03-21)Remote sensing techniques and geophysical techniques have enabled the collection of vital information on geotechnical, hydrogeological, and environmental processes. These techniques may offer improvements over traditional ... -
Research Plan 2020–2022
(NGI-Rapport;20200017-01-R, Research report, 2020-04-23)Snow avalanches are a significant natural hazard and common phenomenon in Norway. Each year, avalanches result in fatalities, evacuations, and interruptions or damage to infrastructure networks such as roads, railways, and ... -
Research Plan 2023–2025
(NGI-Rapport;20230100-01-R, Research report, 2023-05-19)Snow avalanches are a frequent and significant natural hazard in Norway. Each year, avalanche events result in fatalities, evacuations, interruptions, and damage to infrastructure networks such as roads, railways, and ... -
Resultat av målinger på snøforbygning - vinteren 1978/1979
(NGI-rapport;75420-03, Research report, 1980-02-15)Denne rapporten inneholder en kort beskrivelse av instrumenteringen på snøforbygningen, måleresultatene fra vinteren 1978/1979, samt forsøk på å finne fram til belastningsdiagram som passer med de malte verdiene for noen ... -
Resultater av målinger på mast - vinteren 1978/1979
(NGI-rapport;75420-05, Research report, 1980-05-23)Denne rapporten inneholder en kort beskrivelse av instrumenteringen på masten, de malte stalspenningene gjennomvinteren 1978/79, samt en vurdering av resultatene. -
Resultater av målinger på mast vinteren 1986/87
(NGI-rapport;58110-06, Research report, 1987-10-01)Denne rapporten inneholder en kort beskrivelse av instrumenteringen på masten, de målte stålspenningene gjennom vinteren 1986/87, de utregnede aksiallastene og bøyemomentene, samt en kort vurdering av resultatene. -
Resultater av målinger på rør - vinteren 1978/79
(NGI-rapport;75420-04, Research report, 1980-02-29)Denne rapporten inneholder en kort beskrivelse av instrumenteringen på røret, de utregnede stålspenningene forvinteren 1978/79, samt en vurdering av resultatene. -
Review of meteorological data from Fonnbu 2009–2016
(NGI-rapport;20140053-05-TN, Research report, 2017-01-25)12 observed parameters are recalculated with a time step of 1 hour from the original raw data set of observed values with 10 minute time step. To form winter season data sets which would cover complete snow season, it was ... -
Risk analysis for landslides and snow avalanches. Example applications for snow avalanches
(NGI-rapport;522051-01, Research report, 1999-12-23)Prediction of snow avalanche occurrence and its run-out distance inherently involves many uncertainties. The main reason for the large uncertainties is that the mechanical behaviour of snow is extremely complicated, and ... -
Ryggfonn - Options for reconstruction of the test site. Deliverable of the NFR-Snow research programme SIP-6
(NGI-rapport;58120-34, Research report, 2001-01-31)Norges Forskningsråd (NFR) -
The Ryggfonn 5m digital terrain model
(NGI-rapport;20110116-00-1-TN, Research report, 2011-04-12)This document describes how the 5m digital terrain model (DTM) for Ryggfonn has been made and how the data is formatted. -
The Ryggfonn project. Avalanche data from the winters 1994/95 and 1995/96
(NGI-rapport;58120-32, Research report, 1997-12-20)This report presents data collected from the full-scale Ryggfonn project during the winters 1994/95 and 1995/95. Only four avalanches were observed in the course of these two winters, three of which were naturally released ... -
The Ryggfonn project. Avalanche data from the winters 1996/97, 1997/1998, 1998/1999 and 1999/2000
(NGI-rapport;58120-33, Research report, 2001-11-01)This report presents data collected from the full-scale Ryggfonn project during the winters 1996/1997, 1997/1998, 1998/1999 and 1999/2000. The weather and snow conditions and avalanches characteristics are summarised. The ... -
The Ryggfonn project. Description of instrumentation and data registration system
(NGI-rapport;58120-03, Research report, 1983-06-10)The Ryggfonn avalanche path has been instrumented to measure: deflections on a 6 m high steel mast mounted at top of the test embankment by means of weldable strain gauges; wind speed of powder snow fronts by means of a ... -
Ryggfonn prosjektet. Målinger gjort under skred 23. april 1983
(NGI-rapport;58120 Notat 1983-06-27, Research report, 1983-06-27) -
Sentrifuge til bestemmelse av strekkfasthet i snø
(NGI-rapport;58101-01, Research report, 1974-01-01)På snøforskningsstasjonen i Grasdalen var det behov for laboratorieutstyr til utforskning av snøens mekaniske egenskaper. Efter en studietur som undertegnede foretok til Snøforsknings instituttet på Weissfluhjoch ovenfor ... -
Shear stresses and boundary layers in snow avalanches
(NGI-rapport;581240-03, Research report, 1995-10-20)Full-scale experiments on snow avalanches have shown that the major part ofthe avalanches are mixed flow avalanches, and that they consist of at least two parts, a dense flow part and a turbidity part. The report is based ... -
A Simple Model for the Variability of Release Area Size
(NGI-Rapport;20200017‐03‐TN, Research report, 2023-08-24)The hazard mapping tool NAKSIN estimates the release probability of potential release areas (PRAs) by testing a stability criterion based on the infinite-slope approximation with a large sample of synthetic weather situations. ...