Blar i Norges Geotekniske Institutt på emneord "Avalanche-RnD"

Viser treff 21-40 av 380

    • Automated detection of snow avalanche deposits: segmentation and classification of optical remote sensing imagery 

      Lato, Matt; Frauenfelder, Regula; Bühler, Y. (Journal article, 2012)

    • The avalanche accident at Vassdalen, Norway, 5th March 1986 

      Lied, Karstein (Journal article, 1988)
      Shortly after 1300 hrs on wednesday March 5, 1986, a snow avalanche released from Storebalak, a mountain located at Vassdalen in Nordland county. The avalanche struck 31 men from the North Norway Brigade while they were ...

    • The avalanche at Flateyri, Iceland October 26th 1995 and the avalanche history 

      Haraldsdóttir, Svanbjörg Helga (NGI Publication;203, Chapter, 1998)
      An avalanche struck the village Flateyri on 26.10.1995 killing 20 people. There was also an enormous property damage. The avalanche went further than previously known for avalanches from Skollahvilft. The weather conditions ...

    • Avalanche caused catastrophes on the mountainous rivers 

      Soldatov, A. I. (NGI Publication;203, Chapter, 1998)
      Alongside with the danger of snow avalanching for the objects and population, the subsequent phenomena caused by the avalanching are not less serious. One of such reasons can be the choked lakes and outflash floods on the ...

    • Avalanche characterization for regional forecasting 

      Kristensen, Krister; Kronholm, Kalle; Bjørdal, Nils H. (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2008)
      In the Sunnmøre and Romsdal road districts in Western Norway, the local road authorities have compiled a register of more than 300 sites where avalanches encounter principal roads in the area. The area covered is about 5 ...

    • Avalanche control measures for roads in Norway 

      Larsen, Jan Otto (Chapter, 1994)
      In a mountainous country like Norway the roads are exposed to different kind of natural hazards. Increasing traffic and extensive road-building programs the latest 25 years have made the society dependent on a relatively ...

    • Avalanche debris detection using satellite-borne radar and optical remote sensing 

      Eckerstorfer, Markus; Malnes, Eirik; Frauenfelder, Regula; Domaas, Ulrik; Brattlien, Kjetil (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2014)
      The mountainous fjord landscape around Tromsø in Northern Norway is prone to high avalanche activity during the snow season. Large avalanches pose a hazard to infrastructure, such as buildings and roads, located between ...

    • Avalanche defences for Flateyri, Iceland. From hazard evaluation to construction of defences. 

      Sigurdsson, Flosi; Tomasson, Gunnar G. (NGI Publication;203, Chapter, 1998)
      The village of Flateyri was hit by two major avalanches in 1995, with the latter one killing 20 of the 45 people caught in it. These, together with the catastrophic avalanche in the nearby Súôavík in January the same year, ...

    • Avalanche forecasting and risk mitigation for specific objects at risk 

      Kristensen, Krister; Breien, Hedda; Lacasse, Suzanne (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2013)
      Objects and individuals can be exposed to different levels of avalanche hazard. For objectspecific avalanche forecasting and risk mitigation programs, the general danger scales, such as the European and North American ...

    • Avalanche forecasting for transportation corridor and backcountry in Glacier National Park (BC, Canada) 

      Schweizer, Jürg; Jamieson, J. Bruce (NGI Publication;203, Chapter, 1998)
      The Avalanche Control Section at Rogers Pass is responsible for avalanche safety on the Trans Canada Highway and Canadian Pacific Railroad within Glacier National Park and for the daily issue of an avalanche warning bulletin ...

    • An avalanche forecasting program based on a modified nearest neighbour method. 

      Kristensen, Krister; Larsson, Christer (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 1994)
      As a part of an avalanche forecasting system, a modified nearest neighbour program is described. The system is intended to be used with forecast values for most ofthe parameters. The modifications consist of 1) the use of ...

    • Avalanche hazard mapping using numerical Voellmy-Fluid models 

      Gruber, Urs; Bartelt, Perry (NGI Publication;203, Chapter, 1998)
      One- and two-dimensional numerical dense-snow avalanche dynamics models using a Voellmy-fluid constitutive flow law have been developed in Switzerland recently. In order to apply these models in practice, they have been ...

    • An avalanche index for roads 

      Jonsson, Arni; Kristensen, Krister (Chapter, 2008)
      Several methods have been introduced through the years to evaluate avalanche risk along road sections. In 1988, Peter Schaerer introduced Avalanche Hazard Index, a numerical expression of damage and loss as the result of ...

    • The avalanche monitoring system av mount Pizzac 

      Sommavilla, Francesco; Sovilla, Betty (NGI Publication;203, Chapter, 1998)
      The monitoring system of Mount Pizzac has been created in order to study the avalanche dynamics and the effect of its impact on the structures. In its extreme dimensions the monitored avalanche gets off at 2200 meters and ...

    • Avalanche observations at the Ryggfonn test site, Norway, with correlation to snow and weather conditions 

      Gauer, Peter; Kristensen, Krister (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2014)
      The Norwegian Geotechnical Institute (NGI) has been running full-scale avalanche experiments at the Ryggfonn test-site in western Norway for close to 40 years. Data from this period involve observations from about 32 ...

    • Avalanche observations versus numerical avalanche model: Simple test of model performance 

      Gauer, Peter; Aalerud, Annicken Helene; Body, Nellie Sofie (NGI-Rapport;20200017-04-TN, Research report, 2021-03-22)
      Hazard assessment for landuse planning in snow avalanche prone areas requires, besides knowledge of return periods, the specification of expected runout distances. For a complete risk assessment, additionally, the intensity ...

    • The avalanche of la Tartera de la Pica (Andorra) 

      Furdada, Gloria; Vilaplana, Manuel Joan; Tomàs, Enric; Mas, David (NGI Publication;203, Chapter, 1998)
      The great extension of the avalanche path of "la tartera de la Pica" was identified during a systematic avalanche cartography in Andorra (Pyrenees). There are witnesses who, around 1930, saw the avalanche going down around ...

    • Avalanche prediction and strength-of-knowledge assessment 

      Kristensen, Krister (Lecture, 2018)
      The NGI provides local avalanche forecasting, produces hazard maps and acts as an advisor for national and local authorities during emergencies. A main task is often to assess the likelihood of an avalanche reaching specific ...

    • Avalanche probability: Slab release and the effect of forest cover 

      Gauer, Peter (Lecture, 2018)
      One of the main challenges in regard to hazard mapping is to estimate avalanche probabilities and avalanche size for a given path. One reason for this is the lack of sufficient data. By definition, avalanches of interest ...

    • Avalanche rescue and mission risk in Norway 1996-2010 

      Lunde, Albert; Kristensen, Krister (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2013)
      Well documented data from Norwegian avalanche rescue missions are evaluated according to risk assessment. Data have been collected from police records and logs from joint rescue coordination centres. Mission risk assessments ...