Blar i NGI articles på forfatter "Jaedicke, Christian"

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    • Accoustic snow drift measurements: Experiences from the FlowCapt instrument 

      Jaedicke, Christian (Journal article, 2001)
      Three acoustic FlowCapt™ (IAV Engineering) drifting snow instruments were deployed during the 1999 and 2000 field season on Spitsbergen, Norway. Three different experiments were carried out to test the instruments for their ...

    • All-weather avalanche activity monitoring from space? 

      Bühler, Yves; Bieler, Claudia; Pielmeier, Christine; Wiesmann, Andreas; Caduff, Rafael; Frauenfelder, Regula; Jaedicke, Christian; Bippus, Gabriele (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2014)
      Information on avalanche activity or on non-activity on local and regional scale is of great value for avalanche warning services, traffic authorities and experts responsible for safety in communities or ski resorts. In ...

    • 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 ...

    • Avalanches in Longyearbyen Svalbard 2015 and 2017: Avalanche Protection - Visions 

      Jonsson, Arni; Jaedicke, Christian (Journal article, 2017)
      Longyearbyen, the administrative centre of the Svalbard archipelago, is facing most types of natural hazards under a changing Arctic climate. The first indication in meteorological data of a change in climate was a heavy ...

    • Basal shear and normal stresses of dry and wet snow avalanches after a slope deviation 

      Platzer, K.; Bartelt, P.; Jaedicke, Christian (Journal article, 2007)
      Basal shear and normal force measurements of dry and wet snow avalanches and slush flows from the Weissfluhjoch snow chute are presented. This chute contains two slope angle transitions in order to measure the effect of ...

    • Can big data and random forests improve avalanche runout estimation compared to simple linear regression? 

      Toft, Håvard B.; Müller, Karsten; Hendrikx, Jordy; Jaedicke, Christian; Bühler, Yves (Peer reviewed; Journal article, 2023)
      Accurate prediction of snow avalanche runout-distances in a deterministic sense remains a challenge due to the complexity of all the physical properties involved. Therefore, in many locations including Norway, it has been ...

    • 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 ...

    • 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 ...

    • Climate in Svalbard 2100 

      Bilt, Willem van der; Bakke, Jostein; Smedsrud, Lars H.; Sund, Monica; Schuler, Thomas; Westermann, Sebastian; Wong, Wai Kwok; Sandven, Stein; Simpson, Matthew James Ross; Skogen, Morten D.; Pavlova, O.; Ravndal, Ole; Risebrobakken, Bjørg; Saloranta, Tuomo; Mezghani, Abdelkader; Nilsen, F.; Nilsen, Jan Even Øie; Nilsen, Irene Brox; Kierulf, Halfdan; Kohler, Jack; Li, H.; Lutz, J; Melvold, Kjetil; Gjelten, Herdis Motrøen; Gundersen, Jeanette; Isaksen, Kjetil; Jaedicke, Christian; Dobler, Andreas; Engeset, Rune; Frauenfelder, Regula; Gerland, Sebastian; Christiansen, Hanne H; Børsheim, Knut Yngve; Breivik, Øyvind; Breili, Kristian; Borstad, Christopher Paul; Bogen, J.; Benestad, Rasmus; Beldring, S.; Andresen, J; Adakudlu, Muralidhar (Norwegian Centre for Climate Services Reports, Research report, 2019)

    • Coastal inundation multi-hazard analysis for a construction site in Malaysia 

      Harbitz, Carl Bonnevie; Kaiser, Gunilla; Glimsdal, Sylfest; Jaedicke, Christian; Vafeidis, A. T.; Gothlich, Stephan E.; Høydal, Øyvind Armand; Løvholt, Finn; Farrokh, Nadim (Journal article, 2015)
      Establishment of new manufacturing sites in high-technology industries requires considerable investments. These investments need to be safeguarded against the impacts of natural hazards. The March 2011 Tohoku earthquake ...

    • 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 ...

    • The eye in the sky: Avalanche mapping from space 

      Frauenfelder, Regula; Glassett, Timothy D.; Jaedicke, Christian; Vöge, Malte; Robiati, Carlo (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2016)
      The Seward Highway in Alaska has over one hundred avalanche paths spread out along a 150 km major transportation corridor, which traverses three different avalanche climatic regimes. This coupled with a small staff can ...

    • Fonnbu, a new (old) platform for snow and avalanche research. 

      Jaedicke, Christian; Kristensen, Krister; Lied, Karstein; Bakkehøi, Steinar (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2008)
      One of the first tasks of the newly established avalanche group at the NGI in 1973 was the selection of a suitable location for an avalanche research station. The choice was on Grasdalen, north of the Jotunheimen mountains, ...

    • Forcasting snow avalanche days from meteorological data using classification trees; Grasdalen, Western Norway 

      Kronholm, Kalle; Vikhamar-Schuler, Dagrun; Jaedicke, Christian; Isaksen, Ketil; Sorteberg, Asgeir; Kristensen, Krister (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2006)
      Avalanches pose one of the most serious problems to infrastructure and people in the mountains in Norway. Processes leading to avalanche release are deterministic but the time and place of avalanche release is notoriously ...

    • Forecasting snow avalanche days from meteorological data using classification trees, Grasdalen, Western Norway. 

      Kronholm, Kalle; Vikhamar-Schuler, Dagrun; Jaedicke, Christian; Isaksen, Ketil; Sorteberg, Asgeir; Kristensen, Krister (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2006)
      Avalanches pose one of the most serious problems to infrastructure and people in the mountains in Norway. Processes leading to avalanche release are deterministic but the time and place of avalanche release is notoriously ...

    • Forecasting the fatal Longyearbyen avalanche. Possibilities and challenges 

      Jaedicke, Christian; Hestnes, Erik; Bakkehøi, Steinar; Mørk, Torgeir; Brattlien, Kjetil (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2016)
      One of the main questions after the fatal avalanche in Longyearbyen in December 2015, where two persons perished and eleven houses were destroyed, was whether an active avalanche warning system would have identified the ...

    • GIS aided avalanche warning in Norway. 

      Jaedicke, Christian; Kronholm, Kalle; Kristensen, Krister; Bakkehøi, Steinar (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2008)
      By 2008 detailed avalanche warning for the entire Norway is not available. The Norwegian Meteorological Institute only issues a general warning for large regions of the country for danger level 4 or 5, mainly based on ...

    • GIS-aided avalanche warning in Norway 

      Jaedicke, Christian; Syre, Egil; Sverdrup-Thygeson, Kjetil (Journal article, 2014)
      Avalanche warning for large areas requires the processing of an extensive amount of data. Information relating to the three basic requirements for avalanche warning – knowledge of terrain, the snow conditions, and the ...

    • Global landslide and avalanche hotspots 

      Nadim, Farrokh; Kjekstad, Oddvar; Peduzzi, Pascal; Herold, Christian (Journal article, 2006-02-08)
      Allocating resources for natural hazard risk management has high priority in development banks and international agencies working in developing countries. Global hazard and risk maps for landslides and avalanches were ...