Blar i Norwegian Geotechnical Institute (NGI) Digital Archive på forfatter "Kronholm, Kalle"
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A Rule Based Risk Management System Based on Maps and Danger Level
Kronholm, Kalle; Ellevold, Jo Gunnar (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2012)After a tragic accident where 16 soldiers were killed in an avalanche during a military exercise in 1986, the Norwegian Armed Forces took several steps to ensure the safety of soldiers. The result is a risk management ... -
The Ryggfonn 5m digital terrain model
Kronholm, Kalle (NGI-rapport;20110116-00-1-TN, Research report, 2011-04-12)This document describes how the 5m digital terrain model (DTM) for Ryggfonn has been made and how the data is formatted. -
Snow cover spatial variability at multiple scales: Characteristics of a layer of buried surface hoar
Schweizer, Jürg; Kronholm, Kalle (Journal article, 2007)With the aim of a multi-scale analysis, we simultaneously observed snowpack stratigraphy and stability at three scales: the slope scale, the regional scale and the mountain range scale. The minimum spacing between measurements ... -
Spatial variability of micropenetration resistance in snow layers on a small slope
Kronholm, Kalle; Schneebeli, Martin; Schweizer, Jürg (Journal article, 2004)The mechanisms leading to dry-snow slab release are influenced by the three-dimensional variability of the snow cover. We measured 113 profiles of penetration resistance with a snow micropenetrometer on an alpine snow ... -
Surface hoar characteristics derived from a snow micropenetrometer using moving window statistical operations
Lutz, Eric; Birkeland, Karl W.; Kronholm, Kalle; Hansen, Kathy; Aspinall, Richard (Journal article, 2007)This study aims to improve analytical techniques for studying stratigraphic dimensions and hardness characteristics of thin weak layers in the mountain snowpack, with particular interest to buried surface hoar layers. By ... -
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 ... -
The upgraded full-scale avalanche test-site Ryggfonn, Norway.
Gauer, Peter; Breien, Hedda; Issler, Dieter; Kristensen, Krister; Kronholm, Kalle; Lied, Erik; Lied, Karstein (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2010)Measurements of full-scale avalanches are expensive and time consuming, but are indispensable to gain in-depth understanding of the flow behavior of avalanches. They are needed to crosscheck the scaling used in small-scale ... -
Årsrapport [FoU Snøskred 2012]
Sandersen, Frode; Jaedicke, Christian; Domaas, Ulrik; Gauer, Peter; Kronholm, Kalle (NGI-rapport;20120031-01-R, Research report, 2013-02-01)Rapporten beskriver aktivitetene som er gjennomført i 2012 innenfor FoU prosjektet ”Snøskred” finansiert gjennom NVE. Prosjektet er delt inn i 4 hovedområder: - Modellering - Varsling - Sikringstiltak, herunder ... -
Økt skredfare kan avverges
Jaedicke, Christian; Isaksen, Ketil; Sletten, Kari; Kronholm, Kalle (Klima;1-2009, Chapter, 2009)Klimaendringer gir villere vær, mer nedbør og flere skredhendelser i deler av Norge. Men dette trenger ikke føre til flere dødsfall og økte materielle skader, hvis vi bruker sunn fornuft og følger bygningsloven.