Blar i Norwegian Geotechnical Institute (NGI) Digital Archive på emneord "Snow Avalanche"

Viser treff 21-40 av 106

    • Avalanche studies and model validation in Europe, SATSIE. Ryggfonn measurements winter 2004/2005 

      Kristensen, Krister (NGI-rapport;20021048-08, Research report, 2005-12-01)
      This report presents data collected from the full-scale avalanche test site Ryggfonn during the Winter 2004/2005. The weather and snow conditions are described and when possible, the avalanches have been characterized ...

    • Avalanche studies and model validation in Europe, SATSIE. Ryggfonn measurements. Winter 2002 / 2003 and 2003 / 2004 

      Gauer, Peter (NGI-rapport;20021048-05, Research report, 2004-11-30)
      This report presents data collected from the full-scale Ryggfonn project during the Winters 2002/2003 and 2003/2004. The weather and snow conditions described and when possible, the avalanches have been characterized ...

    • Calculation of maximum snow-avalanche run-out distance by use of digital terrain models. 

      Lied, Karstein; Toppe, Ronald (Journal article, 1989)
      This paper discusses how maximum snow-avalanche run-out distance may be calculated by a combination of topographic parameters and use of a digital terrain model. Digitized maps are being made for extensive areas of Norway. ...

    • Changes of the avalanche cadastre in the Czech part of the Giant Mts. 

      Spusta, Valerian ,; Kocianova, Milena (NGI Publication;203, Chapter, 1998)
      Giant Mts. are the highest and the only mountain range of the Czech Republic which features considerable avalanche activity. There are at average 22 avalanches events on 47 avalanche paths in a year. Human colonisation and ...

    • Chute experiments on slushflow dynamics. 

      Jaedicke, Christian; Kern, M.A.; Gauer, Peter; Baillifard, M.-A.; Platzer, K. (Journal article, 2008)
      Slushflows are gravity driven mass flows consisting of a mixture of snow and water, which exhibit considerable damage potential for endangered areas. An increase in global temperature and winter rain precipitation could ...

    • Climate database for avalanche consulting and warning in Norway 

      Jaedicke, Christian; Bakkehøi, Steinar (Journal article, 2007)
      Climate data is an essential tool for the study of weather induced geophysical processes like avalanches. Climate data provides on overview of normal and extreme weather conditions at a given location. This information can ...

    • Comparing model and full-scale experiments on snow avalanche dynamics 

      Norem, Harald (NGI-rapport;58120-28, Research report, 1992-10-01)
      The paper is a part of a Japanese - Norwegian collaboration on snow avalanche dynamics. The results of model experiments carried out at the Institute of Low Temperature Science, Sapporo are compared with full-scale ...

    • Computational models for dense snow avalanche motion 

      Harbitz, Carl Bonnevie (NGI-rapport;581250-03, Research report, 1996-04-30)
      Seventeen various models of dense snow avalanche motion are presented. These include statistical, comparative and energy considering models for runout distance computations as well as dynamic models for avalanche motion ...

    • Conclusions from a recent survey of avalanche computational models 

      Harbitz, Carl Bonnevie; Issler, Dieter; Keylock, Christopher J. (NGI Publication;203, Chapter, 1998)
      In this paper we summarise a survey report on computational models for snow avalanche motion that was developed within the frame-work of the EU research project SAME (Snow Avalanche Modelling, Mapping and Warning in Europe). ...

    • Dense avalanche numerical modeling interaction between avalanche and structures 

      Naaim, Mohamed (NGI Publication;203, Chapter, 1998)
      Applications of the Saint Venant equations were extended to rapid gravity flows of geophysical fluid with a non-newtonian behavior such as snow avalanches. This paper presents a numerical and physical approach for snow ...

    • Design of snow avalanche deflecting dams 

      Harbitz, Carl Bonnevie; Domaas, Ulrik; Engen, Arne (Chapter, 2000)
      Extensive effort has been put into improved understanding of avalanche deflection over the last two years. This paper discusses construction of deflecting dams in steep terrain, and gives an in-depth description of the ...

    • The differentiation of thaws in connection with slushflow occurrences. 

      Chernouss, Pavel; Tyapkina, Olga; Hestnes, Erik; Bakkehøi, Steinar (NGI Publication;203, Chapter, 1998)
      Classification of meteorological conditions accompanying slushflow occurrences is attempted. Days with mean daily air temperature above O°C have been chosen for the analysis. Each day has been described with a set of ...

    • Dynamics of two-layer slushflows 

      Bozhinskiy, A.N.; Nazarov, A.N. (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). ...

    • The effect of dam constructions as mitigative measures: 14 years of experience from a full-scale project 

      Larsen, Jan Otto; Norem, Harald (Lecture, 1996)
      The Ryggfonn project is a full-scale project for determination of avalanche behavior. Measurements of velocities, impact pressures and observations of flow patterns around a 15 m high and 75 m long earthfill dam, have been ...

    • The EU CADZIE database for extreme and deflected snow avalanches 

      Domaas, Ulrik (NGI-rapport;20001289-01, Research report, 2001-09-05)
      ABSTRACT. The EU program CADZIE (Catastrophic Avalanches: Defence Structures and Zoning in Europe), was established after the catastrophic 1999 avalanche winter in Europe. The overall objective of the program is improved ...

    • EU Program CADZIE WP5. Norwegian zoning tools. 

      Domaas, Ulrik (NGI-rapport;20011001-02, Research report, 2001-04-20)
      In Work Package 5, Task 2 of the EU-Program CADZIE (Catastrophic Avalanches, Defence Structures and Zoning in Europe), each participating country will contribute to Deliverable D9: Pre-standardisation of zoning tools. The ...

    • EU programme CADZIE. New concepts in avalanche hazard mapping 

      Harbitz, Carl Bonnevie (NGI-rapport;20001018-02, Research report, 2003-06-16)
      The main goal of the CADZIE workpackage 1 is to improve the hazard assessment process by integrating uncertainty and to develop "best-fit" models. This goal can only be achieved if both the stochastic characteristics of ...

    • EU Programme SAME. A survey of computational models for snow avalanche motion 

      Harbitz, Carl Bonnevie (NGI-rapport;58122-01, Research report, 1998-12-11)
      Various models for computation of avalanche motion are presented, both empirical procedures including statistical and comparative models for runout distance computations as well as dynamics models describing the physics ...

    • EU Programme SAME. Draft proposal for a co-ordinated European full-scale avalanche experiment 

      Harbitz, Carl Bonnevie (NGI-rapport;58122-02, Research report, 1998-12-11)
      The scope of this proposal is to describe the conclusions made in the EU programme SAME (Avalanche Mapping, Model Validation and Warning Systems) for a future co-ordinated European full-scale avalanche experiment. It is ...

    • Finite element modeling of snow-pack lying on a slope, considering snow as isotropic compressible viscoplastic media 

      Mishra, Aloke; Mahajan, Puneet (NGI Publication;203, Chapter, 1998)
      A simple extension of the von Mises plasticity is proposed in which the equivalent stress is defined as a function of deviatoric and hydrostatic stresses. Non-linearity is accounted by extending NortonHoff equation for ...