Norges Geotekniske Institutt: Recent submissions

Now showing items 141-160 of 1234

    • Laws of friction in snow mechanics 

      McClung, David M. (Chapter, 1976)
      Laws of sliding and friction are of primary importance in the determination of pre-fracture conditions for slab avalanches as well as for practical considerations such as determining snow pressure loads on constructions ...

    • Rheology of a wet, fragmenting granular flow and the riddle of the anomalous friction of large rock avalanches 

      De Blasio, Fabio Vittorio (Journal article, 2009)
      The effective friction coefficient of rock avalanches diminishes gradually as a function of the avalanche volume. Large rock avalanches can reach run-out distances as long as ten times the fall height, despite the fact ...

    • The snowdrift pattern around two cubical obstacles with varying distance. Measurements and numerical simulations. 

      Thiis, Thomas K.; Jaedicke, Christian (Chapter, 2000)
      Snowdrifts around buildings can cause serious problems when formed on undesirable places. The formation of snowdrifts is highly connected to the wind pattern around the building, and the wind pattern is again dependent on ...

    • Sikringstiltak mot snø- og sørpeskred 

      Hestnes, Erik; Sandersen, Frode (Byggforskserien - Planløsning;Sending 1, Chapter, 1995)
      Dette bladet behandler de vanligste tiltakene for å sikre bebyggelse mot snø- og sørpeskred. Hensikten med bladet er å gi en oversikt over mulige sikringsmetoder. Bladet gir ikke detaljerte data for prosjektering og ...

    • Road traffic and avalanches - methods for risk evaluation and risk management 

      Kristensen, Krister; Harbitz, Carl Bonnevie; Harbitz, Alf (Journal article, 2003)
      This paper considers the methods for risk analysis and management in connection with avalanches and road traffic. Examples with calculations of encounter probability and quantification of uncertainty are given, along with ...

    • Bioavailability of Macro and Micronutrients Across Global Topsoils: Main Drivers and Global Change Impacts 

      Ochoa-Hueso, Raúl; Delgado-Baquerizo, Manuel; Risch, Anita C.; Ashton, Louise; Augustine, David; Bélanger, Nicolas; Bridgham, Scott; Britton, Andrea J.; Bruckman, Viktor J.; Camarero, J. Julio; Cornelissen, Gerard; Crawford, John A.; Dijkstra, Feike A.; Diochon, Amanda; Earl, Stevan; Edgerley, James; Epstein, Howard; Felton, Andrew; Fortier, Julien; Gagnon, Daniel; Greer, Ken; Griffiths, Hannah M.; Halde, Caroline; Hanslin, Hans Martin; Harris, Lorna I.; Hartsock, Jeremy A.; Hendrickson, Paul; Hovstad, Knut Anders; Hu, Jia; Jani, Arun D.; Kent, Kelcy; Kerdraon-Byrne, Deirdre; Khalsa, Sat Darshan S.; Lai, Derrick Y. F.; Lambert, France; LaMontagne, Jalene M.; Lavergne, Stéphanie; Lawrence, Beth A.; Littke, Kim; Leeper, Abigail C.; Licht, Mark A.; Liebig, Mark A.; Lynn, Joshua; Maclean, Janet E.; Martinsen, Vegard; McDaniel, Marshall D.; McIntosh, Anne C. S.; Miesel, Jessica R.; Miller, Jim; Mulvaney, Michael J.; Moreno, Gerardo; Newstead, Laura; Pakeman, Robin J.; Pergl, Jan; Pinno, Bradley D.; Piñeiro, Juan; Quigley, Kathleen; Radtke, Troy M.; Reed, Paul; Rolo, Víctor; Rudgers, Jennifer; Rutherford, P. Michael; Sayer, Emma J.; Serrano-Grijalva, Lilia; Strack, Maria; Sukdeo, Nicole; Taylor, Andy F. S.; Truax, Benoit; Tsuji, Leonard J. S.; van Gestel, Natasja; Vaness, Brenda M.; Van Sundert, Kevin; Vítková, Michaela; Weigel, Robert; Wilton, Meaghan J.; Yano, Yuriko; Teen, Ewing; Bremer, Eric (Peer reviewed; Journal article, 2023)

    • Drifting snow in complex terrain. Comparison of measured snow distribution and simulated wind field. 

      Jaedicke, Christian; Thiis, Thomas K.; Sandvik, Anne Dagrunn; Gjessing, Yngvar (Chapter, 2000)
      Snowdrift in complex terrain can cause significant problems for maintenance of road and railway systems during winter and is a major factor for snow avalanche releases. The location of accumulation and erosion areas is ...

    • Changes in the snow drift pattern caused by a building extension. Investigations through scale modeling and numerical simulations 

      Thiis, Thomas K. Thiis; Jaedicke, Christian (Chapter, 2000)
      Snowdrifts around buildings can cause serious problems when formed on undesirable places. The formation of snowdrifts is highly connected to the wind pattern around the buildings, and the wind pattern is again dependent ...

    • Trykkvirkninger av skred 

      Larsen, Jan Otto (Chapter, 1979)
      Masse i bevegelse følger de generelle fysiske grunnprinsipper: K = m . a (newtons 2 . lov)....

    • The effectiveness of avalanche airbags 

      Haegeli, Pascal; Falk, Markus; Procter, Emily; Zweifel, Benjamin; Jarry, Frederic; Logan, Spencer; Kronholm, Kalle; Biskupic, Marek; Brugger, Hermann (Journal article, 2014)
      Aim: Asphyxia is the primary cause of death among avalanche victims. Avalanche airbags can lower mortality by directly reducing grade of burial, the single most important factor for survival. This study aims to provide an ...

    • Field measurements of sintering after fracture of snowpack weak layers 

      Birkeland, Karl W.; Kronholm, Kalle; Logan, Spencer; Schweizer, Jürg (Journal article, 2006)
      This research documents two cases where field workers unintentionally fractured a snowpack weak layer, but no avalanche released. Measurements from before and after the fractures provide unique data sets on the temporal ...

    • Integrating spatial patterns into a snow avalanche cellular automata model 

      Kronholm, Kalle; Birkeland, Karl W. (Journal article, 2005)
      Snow avalanches are a major mountain hazard that kills hundreds of people and causes millions of dollars in damage worldwide annually. Yet, the relationship between the well-documented spatial variability of the snowpack ...

    • 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 ...

    • Penzenlähner avalanche - calculation of maximum run-out of snow avalanches. Presentation of the results from the Norwegian working group 

      Domaas, Ulrik (Journal article, 1999)
      In order to find a probable run-out of extreme snow avalanches in the area east of HU:1gerburg of the Penzenlahnerlawine, we have used three different methods to calculate runout in the same manner as in Norway. The models ...

    • Utviklingstrekk og muligheter for sikring av veger mot snøskred 

      Norem, Harald (Journal article, 1984)
      Snøutvalget i Statens Vegvesen var i virksomhet i perioden 1974- 82. Hovedformålet til utvalget var å følge med i snøprosjekter ved NTH, initiere forsøk med sikring av veger mot. snøskred og drivsnø, og sørge for at ...

    • Snøskred og vurdering av snøskredfare 

      Lied, Karstein (Chapter, 1976)
      Artikkelen gir først en kort historikk av snøskredforskning i Norge. Den er nå organisert ved Norges Geotekniske Institutt som har etablert en fast forskningsstasjon i høyfjellet. Deretter er det redegjort for de viktigste ...

    • Snow mass quantification and avalanche victim search by ground penetrating radar 

      Jaedicke, Christian (Journal article, 2003)
      Ground penetrating radar (GPR) systems can be used in many applications of snow and ice research. The information from the GPR is used to identify and interpret layers, objects and different structures in the snow. A ...

    • A model for frictional melt production beneath large rock avalanches 

      De Blasio, Fabio Vittorio; Elverhøi, Anders (Journal article, 2008)
      Two puzzling traits of giant rock avalanches (sturzstroms) are the decrease of the effective friction coefficient as a function of the volume (volume effect) and the remarkable preservation of large geological structures ...

    • Overrun length of avalanches overtopping catching dams: Cross-comparison of small-scale laboratory experiments and observations from full-scale avalanches 

      Faug, Thierry; Gauer, Peter; Lied, Karstein; Naaim, Mohamed (Journal article, 2008)
      Results from small-scale and full-scale experiments on avalanche–dam interactions are presented and compared. These experiments were analyzed with respect to the overrun length (i.e., the distance that the avalanche traveled ...

    • On the computation of parameters that model snow avalanche motion 

      Bakkehøi, Steinar; Cheng, T.; Domaas, Ulrik; Lied, K.; Perla, R.; Schieldrop, B. (Journal article, 1981)
      This paper explores the computational problem of finding suitable numbers to use in a twoparameter model of snow avalanche dynamics. The two parameters are friction, y, and a ratio of avalanche mass to drag, MID. Given a ...