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Your search for Subject mountain snowpackresulted in 233 records.

Title: Avalanche Impact Performance of a Light-Weight Diversion Structure Snettisham Transmission Line, Southeast Alaska
Date: 2012
Authors: Chris Wilbur, Mike Janes, Art Mears
Description: The 138kV Snettisham electrical transmission line is the main power source for Juneau, Alaska. The line was constructed in 1973 and traverses steep r...
Object ID: issw-2012-294-299.pdf
Keywords: avalanche impact pressure, hydroelectric, weather forecasting
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Title: Properties of Weak Layers Composed of Precipitation Particles In and Near Avalanche Starting Zones in Japan
Date: 2012
Authors: Shinji Ikeda, Tomoyuki Noro
Description: To gain further insight into the properties of weak layers composed of precipitation particles(PP weak layer), we analyzed 18 measurement datasets. A...
Object ID: issw-2012-586-590.pdf
Keywords: weak layer, fracture lines, snow crystals, avalanche forecast
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Title: Tracking Wetting Front Adavance With Upward-Looking Ground-Penetrating Radar
Date: 2012
Authors: Lino Schmid, Christoph Mitterer, Achim Heilig, Jürg Schweizer, Olaf Eisen
Description: Percolating melt water combined with snow stratigraphy are thought to be the dominating drivers for the formation of wet-snow avalanches. It is, howev...
Object ID: issw-2012-599-602.pdf
Keywords: wet snow avalanches, snow stratigraphy, meltwater, avalanche activity
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Title: Mechanics of Weak Layer Snow Under Cyclic Loading Studied By FEM
Date: 2012
Authors: Evgeny A. Podolskiy, Guillaume Chambon
Description: The mechanical behavior of snow weak layers is a crucial element in dry snow slab avalanche forecasting. Here, we use Finite Element Method (FEM) mod...
Object ID: issw-2012-617-621.pdf
Keywords: dry slab avalanche, elasticity, weak layer
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Title: Lautaret Avalanche Test Site: Outcomes from the 11th April 2012 Event
Date: 2012
Authors: Xavier Ravanat, Hervé Bellot, Frederic Ousset, Emmanuel Thibert, Mohamed Naaim
Description: The Lautaret full-scale avalanche test site has been used by Cemagref-Irstea since the early 70’s. The first studies were dedicated to avalanch...
Object ID: issw-2012-622-627.pdf
Keywords: snow, avalanche, experimental test-site, propagation model
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Title: Practical Outputs for Avalanche Experts from Two Research Projects in Aosta Valley (NW Italy)
Date: 2012
Authors: B. Frigo, M. Maggioni, A. Debernardi, V. Segor, L. Pitet, B. Chiaia, M. Freppaz, E. Zanini
Description: In agreement with the idea of the ISSW “a merging of theory and practice”, we describe the activities carried out in Aosta Valley (NW Ital...
Object ID: issw-2012-795-799.pdf
Keywords: expert’s education, courses, guide lines, web based training
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Title: Real Time Snow Slope Stability Modeling of Direct Action Avalanches
Date: 2012
Authors: Scott Havens, H.P. Marshall, Chris Covington, Bill Nicholson, Howard Conway
Description: Improved prediction of the timing of direct action avalanches that occur during storms is needed for highway forecasting operations. A SNOw Slope Stab...
Object ID: issw-2012-866-871.pdf
Keywords: direct action avalanche, avalanche observation, snowpack model, meteorological data
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Title: Positioning of Avalanche Protection Measures Using Snow Depth Mapping Via Terrestrial Laser Scanning
Date: 2012
Authors: Alexander Prokop, Christina M. Delaney
Description: In recent years snow depth mapping via terrestrial laser scanning has become increasingly popular as a measurement method used for snow and avalanche ...
Object ID: issw-2012-983-988.pdf
Keywords: snow depth, avalanche protection, release area, slopes
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Title: Axisymmetric Measurements of Extended Deformation Around the Snow Micropenetrometer Tip
Date: 2012
Authors: A.M. LeBaron, D.A. Miller, A. Van Herwijnen
Description: Current physical models for the snow micropenetrometer (SMP) make the assumption that the tip of the SMP probe only stresses or fractures the ice grai...
Object ID: issw-2012-408-413.pdf
Keywords: snow micropenetrometer, strain, compaction
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Title: Spatial Variabiity of Snowpack on Small Wind Effected Slopes, Central Svalbard
Date: 2012
Authors: Wesley R. Farnsworth, Markus Eckerstorfer, Hanne H. Christiansen
Description: Spatial variability studies of snowpack stability have predominantly been conducted on sheltered uniform slopes despite mountains and avalanche starti...
Object ID: issw-2012-467-472.pdf
Keywords: spatial variability, snowpack, slopes, artificial trigger points, weak layer
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Title: How Do You Stress the Snowpack?
Date: 2012
Authors: Scott Thumlert, Bruce Jamieson, Thomas Exner
Description: In the majority of fatal avalanches, skiers and snowmobilers apply load to the snowpack which triggers the initial failure in a weak layer. Understan...
Object ID: issw-2012-506-512.pdf
Keywords: dynamic stress, localized dynamic loading, snowmobile, snow stability, avalanche forecasting, snowpack stratigraphy
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Title: Continuous Monitoring of the Seasonal Snowpack Evolution Utilizing Upward-Looking GPR Technology
Date: 2010
Authors: Achim Heilig, Christoph Mitterer, Susanna Hoinkes, Jürg Schweizer, Olaf Eisen
Description: A temporally continuous observation of the seasonal evolution of the snow stratigraphy at a single site requires non-invasive monitoring technology. W...
Object ID: ISSW_O-003.pdf
Keywords: avalanche, snowpack, stratigraphy, switzerland
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Title: Suitability of Infrared Thermography to Examining Temperature Profiles in Snow Pack
Date: 2010
Authors: Paul Brusseau
Description: Thermography, using fully radiometric infrared imagers, is a still emerging field. Thermal imaging technology is continually improving and is easy to ...
Object ID: ISSW_O-004.pdf
Keywords: infrared thermography spot size, emissivity, snow temperature
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Title: Use of Thermal Photography to Measure Snowpack Properties
Date: 2010
Authors: Cora Shea, Bruce Jamieson
Description: Many snow processes are linked to snow temperature. A thermal photograph captures tens of thousands of surface temperature measurements in a single, p...
Object ID: ISSW_O-005.pdf
Keywords: heat conduction, surface hoar, thermal photography, thermal profile
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Title: Application of a Numerical Snowpack Model to Estimate Full-Depth Avalanche Danger
Date: 2010
Authors: Hiroyuki Hirashima, Isao Kamiishi, Satoru Yamaguchi, Atsushi Sato, Michael Lehning
Description: Many full-depth avalanches occur in temperate, snowy regions such as the northern part of Honshu, Japan. Such avalanches threaten infrastructure and c...
Object ID: ISSW_O-008.pdf
Keywords: snowpack model, water transport, full depth avalanche
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