Blar i Norwegian Geotechnical Institute (NGI) Digital Archive på forfatter "Logan, Spencer"

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    • 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 ...

    • Temporal changes in the spatial variability of shear strength and stability. 

      Logan, Spencer; Birkeland, Karl W.; Kronholm, Kalle; Hansen, Kathy (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2006)
      Avalanche forecasting involves the prediction of spatial and temporal variability of the snowpack. To predict avalanches with more accuracy it is important to determine whether the snowpack is becoming more spatially ...