Blar i Norwegian Geotechnical Institute (NGI) Digital Archive på dokumenttype "Chapter"

Viser treff 21-40 av 271

    • 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 ...

    • 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 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 ...

    • Avalanche risk along a 420 kV transmission line in Iceland 

      Jonsson, Arni; Bakkehøi, Steinar; Hauksson, Sigurjon (Chapter, 2008)
      Two transmission lines between Flj6tsdalur and Reyöarfjöröur in northeast Iceland have been investigated conceming snow avalanche hazard. As a basis for the calculations of the return periods of the avalanches, weather and ...

    • Avalanche risk along a 420 kv transmission line in Iceland. 

      Jónsson, Árni; Bakkehøi, Steinar; Hauksson, Sigurjón (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2006)
      Two transmission lines between Fljótsdalur and Reyðarfjörður in northeast Iceland have been investigated concerning snow avalanche hazard. Given a specific level of probability of failure for both the lines less than ...

    • The avalanche situation in a special winter. Review of the 09/10 season in Norway. 

      Jaedicke, Christian; Brattlien, Kjetil; Frauenfelder, Regula; Kristensen, Krister; Kronholm, Kalle (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2010)
      The 2009/10 season featured significantly different snow conditions compared to the usually maritime snow pack in most of Norway. A stable high-pressure system over large parts of Europe led to low temperatures and limited ...

    • The avalanche situation in Neskaupstadur, Iceland : A preliminary defensive plan 

      Tomasson, Gunnar G.; Sigurdsson, Flosi; Rapin, François (NGI Publication;203, Chapter, 1998)
      The avalanche situation in the town of Neskaupstaôur is rather unique and in many respects more difficult than in any other place in Iceland. The avalanche risk is high in a large portion of the 2,7 km long residential ...

    • AVO Modelling Considering Various Caprock and Reservoir Scenarios for Potential CO2 Storage in Smeaheie Area, Northern North Sea 

      Fawad, Manzar; Mondol, Nazmul Haque (Chapter, 2019)
      We have performed a comparative study of undrained triaxial testing with five different laboratories, to explore the reproducibility of test results. Opalinus Clay was sourced as testing material from a borehole at the ...

    • Back-Calculation of Element Tests with a Rate Dependent Soft Soil Model 

      Yannie, Jorge; Sivasithamparam, Nallathamby (Chapter, 2016)
      It is well known that soft clays are geo-materials with properties such as fabric, bonding and rate-dependency. The response observed when modelling complex boundary value problems will depend on the ability of the soil ...

    • Back-calculations of observed avalanches against natural deflecting dams 

      Issler, Dieter; Harbitz, Carl Bonnevie; Domaas, Ulrik; Kronholm, Kalle; Christen, Marc (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2012)
      The objective of this study is to assess the reliability of presently available numerical avalanche models in predicting avalanche flow about deflecting natural terrain features such as large boulders or moraine ridges. ...

    • Bestemmelse av hviletrykk (K0) i norske leirer – anbefalinger basert på en sammenstilling av lab-, felt- og erfaringsdata 

      L’Heureux, Jean-Sébastien; Ozkul, Zeynep; Lacasse, Suzanne; D'Ignazio, Marco; Lunne, Tom (Chapter, 2017)
      The purpose of this study is to present guidelines and correlations to estimate the coefficient of earth pressure at rest (K0) in Norwegian clays in absence of site-specific data. A database of K0-measurements from advanced ...

    • Calibration cone penetration testing in silty soils 

      Fioravante, V.; Giretti, D.; Lunne, Tom; Carotenuto, Pasquale; Augustesen, A.H.; Lindeboom, R.C.J.; Krogh, L.; Dias, H.; Sougle, M.-C.; Barwise, A.; de Wit, S.; Burbury, D. (Chapter, 2022)

    • Calibration of cone penetrometers according to International Organization for Standardization requirements 

      Soage-Santos, R.; Gomez Meyer, E.; Peuchen, J.; Yetginer, G.; Lunne, Tom; Carrington, T. (Chapter, 2022)