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- Title: A PERSISTENT SLAB CYCLE IN THE WASHINGTON CASCADSES; A CASE STUDY OF SNOWPACK VARIABLES AFFECTING THE DURATION OF OBSERVED AVALANCHE ACTIVITY ACROSS SUBREGIONS
- Date: 2026-09-28
- Authors: Kathryn J. Warren
- Description: In the Washington Cascades, rain-on-snow events followed by prolonged high pressure frequently lead to the formation of crust adjacent persistent weak...
- Object ID: ISSW2026_P4.23.pdf
- Keywords: persistent slab avalanches, coastal snow climate, case study, faceted snow
- View additional details about A PERSISTENT SLAB CYCLE IN THE WASHINGTON CASCADSES; A CASE STUDY OF SNOWPACK VARIABLES AFFECTING THE DURATION OF OBSERVED AVALANCHE ACTIVITY ACROSS SUBREGIONS
- Title: A POST-MITIGATION DEEP SLAB IN THE HOURGLASS COULOIR
- Date: 2026-09-28
- Authors: Robert Griffith, Mike Rheam
- Description: On the morning of January 1, 2026, Jackson Hole Mountain Resort saw its largest inbounds avalanche of the season in an area called the Hourglass Coulo...
- Object ID: ISSW2026_P4.32.pdf
- Keywords: incidents and case studies, post mitigation release, deep slab instability, ski area, explosives
- View additional details about A POST-MITIGATION DEEP SLAB IN THE HOURGLASS COULOIR
- Title: A MULTI-SOURCE, INTERNATIONAL ANALYSIS OF AVALANCHE PROBLEM TYPES IN FATAL INCIDENTS (2017–2026)
- Date: 2026-09-28
- Authors: Keith Gale
- Description: Avalanche danger ratings have appropriately received substantial research attention because they provide the primary regional summary of avalanche haz...
- Object ID: ISSW2026_P4.42.pdf
- Keywords: avalanche problem types, danger scale, persistent slab, fatality analysis, international harmonization
- View additional details about A MULTI-SOURCE, INTERNATIONAL ANALYSIS OF AVALANCHE PROBLEM TYPES IN FATAL INCIDENTS (2017–2026)
- Title: MARCH MEGA THAW: FORECASTING CASE STUDY DURING A PROLONGED EARLY SPRING HEAT EVENT IN UTAH, 2025–26
- Date: 2026-09-28
- Authors: Nikki Champion, Jenna Malone, Jonathan Morgan
- Description: The 2025–26 winter in Utah produced a complex snowpack shaped by persistent weak layers, multiple rain-on-snow events, extended high-pressure period...
- Object ID: ISSW2026_P4.47.pdf
- Keywords: wet slab avalanches, persistent weak layers, spring warming event, avalanche forecasting, snow climatology, utah
- View additional details about MARCH MEGA THAW: FORECASTING CASE STUDY DURING A PROLONGED EARLY SPRING HEAT EVENT IN UTAH, 2025–26
- Title: A STUDY OF THE PHYSICAL PROPERTIES OF SLAB COHESION AND ITS IMPACT ON THE STABILITY OF THE SNOW COVER
- Date: 2026-09-28
- Authors: Megan Cramb, Alexandre Langlois
- Description: Unconsolidated snow, particularly during or immediately following a storm, is often expected to release as loose avalanches. However, there are numero...
- Object ID: ISSW2026_P4.49.pdf
- Keywords: cohesion, slab development, storm slab, dry loose, soft slab, unconsolidated snow
- View additional details about A STUDY OF THE PHYSICAL PROPERTIES OF SLAB COHESION AND ITS IMPACT ON THE STABILITY OF THE SNOW COVER
- Title: HUNTING MACH CONES IN SNOW:SUPERSHEAR FRACTURE & SHOCK FRONT REFRACTION IN LAYERED SLABS
- Date: 2026-09-28
- Authors: Alexandre Pellet, Bastian Bergfeld, Alec van Herwijnen, Johan Gaume
- Description: Supershear crack propagation has recently been identified as an important mechanism in snow slab avalanche release. In this regime, the crack in the w...
- Object ID: ISSW2026_P1.16.pdf
- Keywords: snow slab avalanche, crack propagation, supershear fracture, mach cone, weak layer, propagation saw test, snow stratigraphy.
- View additional details about HUNTING MACH CONES IN SNOW:SUPERSHEAR FRACTURE & SHOCK FRONT REFRACTION IN LAYERED SLABS
- Title: METEOROLOGICAL AND SNOWPACK PROPERTIES ASSOCIATED WITH CRUST-ADJACENT PERSISTENT WEAK LAYERS - PART 1: A REVIEW OF PREVIOUS RESEARCH
- Date: 2024-09-23
- Authors: Andy Moderow, Andrew Schauer, Aleph Johnston-Bloom
- Description: Previous research has explored the mechanisms - in theory, field studies, and lab experiments - that explain the formation of faceted grains at crust/...
- Object ID: ISSW2024_P1.10.pdf
- Keywords: crusts, melt-freeze layers, persistent weak layer, deep slab, avalanche forecasting
- View additional details about METEOROLOGICAL AND SNOWPACK PROPERTIES ASSOCIATED WITH CRUST-ADJACENT PERSISTENT WEAK LAYERS - PART 1: A REVIEW OF PREVIOUS RESEARCH
- Title: INSIGHTS INTO THE INFLUENCE OF SNOW MICROSTRUCTURE ON THE COMPRESSIVE STRENGTH OF WEAK LAYERS
- Date: 2024-09-23
- Authors: Jakob Schöttner, Melin Walet, Philipp Rosendahl, Philipp Weißgraeber, Valentin Adam, Florian Rheinschmidt, Benjamin Walter, Jürg Schweizer, Alec van Herwijnen
- Description: Natural weak layers exhibit a variety of different microstructures and densities, and thus show different mechanical behavior. Up to now, mechanical p...
- Object ID: ISSW2024_O3.2.pdf
- Keywords: snow slab avalanches, snow mechanics, weak snow layers, strength, microstructure
- View additional details about INSIGHTS INTO THE INFLUENCE OF SNOW MICROSTRUCTURE ON THE COMPRESSIVE STRENGTH OF WEAK LAYERS
- Title: A GUIDANCE FOR THE INTERPRETATION OF PROPAGATION SAW TESTS
- Date: 2024-09-23
- Authors: Philipp L. Rosendahl, Valentin Adam, Stephan Harvey, Bastian Bergfeld, Florian Rheinschmidt, Melin D. E. Walet, Jakob Schöttner, Alec van Herwijnen, Philipp Weißgraeber
- Description: Assessing snowpack stability is crucial for determining the avalanche danger level. In this context, the propagation saw test is a valuable tool, thou...
- Object ID: ISSW2024_O3.4.pdf
- Keywords: dry-snow slab avalanches, fracture toughness, stability test, propagation saw test, propagation probability, real-time application
- View additional details about A GUIDANCE FOR THE INTERPRETATION OF PROPAGATION SAW TESTS
- Title: EXPANDING THE KNOWLEDGE OF WEAK-LAYER FRACTURE INTO CROSS-SLOPE DIRECTION
- Date: 2024-09-23
- Authors: Florian Rheinschmidt, Valentin Adam, Bastian Bergfeld, Melin D. E. Walet, Jakob Schöttner, Philipp Weißgraeber, Alec van Herwijnen, Philipp L. Rosendahl
- Description: Fracture toughness, a critical material parameter for assessing resistance to crack growth, has been extensively studied in weak snow layers for mode ...
- Object ID: ISSW2024_O3.5.pdf
- Keywords: dry-snow slab avalanches, fracture toughness, cross-slope-propagation, out-of-plane loading, weak snow layers
- View additional details about EXPANDING THE KNOWLEDGE OF WEAK-LAYER FRACTURE INTO CROSS-SLOPE DIRECTION
- Title: STRONG WIND, SOFT SLAB – POSSIBLE EXPLANATIONS
- Date: 2024-09-23
- Authors: Anna Heuberger, Veronika Krieger, Ingrid Reiweger
- Description: Snowfall, strong winds up to 80 km/h, and super powder skiing conditions the next day –
a situation which was reported multiple times during the wi...
- Object ID: ISSW2024_P3.9.pdf
- Keywords: wind slab, slab hardness, wind slab properties, wind speed
- View additional details about STRONG WIND, SOFT SLAB – POSSIBLE EXPLANATIONS
- Title: DEVELOPING TWO MULTIAXIAL TESTING MACHINES TO LINK STRENGTH AND MICROSTRUCTURE OF WEAK SNOW LAYERS
- Date: 2024-09-23
- Authors: Jakob Schöttner, Eduardo Marques, Benjamin Eggert, Melin Walet, Ricardo Carbas, Valentin Adam, Michael Hohl, Philipp Weißgraeber, Philipp Rosendahl, Sirah Kraus, Florian Rheinschmidt, Michelle Hedvard, Lucas F.M. da Silva, Jürg Schweizer, Alec van Herwijnen
- Description: Avalanche forecasting increasingly relies on snow cover models. In this context, accurate information on the mechanical properties of weak layers is r...
- Object ID: ISSW2024_P3.11.pdf
- Keywords: snow slab avalanches, weak snow layers, snow strength, experimental testing, microstructure
- View additional details about DEVELOPING TWO MULTIAXIAL TESTING MACHINES TO LINK STRENGTH AND MICROSTRUCTURE OF WEAK SNOW LAYERS
- Title: ASYMMETRICAL THREE-POINT BEND TEST FOR INVESTIGATING MIXED-MODE FRACTURE TOUGHNESS IN WELL-BONDED SNOW
- Date: 2024-09-23
- Authors: Valentin Adam, Florian Rheinschmidt, Melin D. E. Walet, Jakob Schöttner, Dr.-Ing. Bastian Bergfeld, Prof. Dr.-Ing. Philipp Weißgraeber, Dr. Alec van Herwijnen, Dr.-Ing. Philipp L. Rosendahl
- Description: Slab fracture plays a crucial role in the release of dry-snow slab avalanches, affecting the size
of the release area. However, there is a lack of fr...
- Object ID: ISSW2024_P3.16.pdf
- Keywords: dry-snow slab avalanches, fracture toughness, mixed-mode loading, slab fracture, bending test, finite element analysis
- View additional details about ASYMMETRICAL THREE-POINT BEND TEST FOR INVESTIGATING MIXED-MODE FRACTURE TOUGHNESS IN WELL-BONDED SNOW
- Title: A CASE STUDY AND COMPARISON OF MID-WINTER WARMING AND SOLAR DRIVEN WET SLAB AVALANCHE CYCLES
- Date: 2024-09-23
- Authors: Erich Peitzsch
- Description: Wet slab avalanches are poorly understood and often difficult to forecast. Yet, wet slab avalanches can be destructive and may become more common in a...
- Object ID: ISSW2024_O5.4.pdf
- Keywords: wet slab avalanche, climate, case study
- View additional details about A CASE STUDY AND COMPARISON OF MID-WINTER WARMING AND SOLAR DRIVEN WET SLAB AVALANCHE CYCLES
- Title: WIND SLAB OR STORM SLAB; WHEN DO WE USE EACH TERM?
- Date: 2023-10-08
- Authors: Nathalie de Leeuw, Karl Birkeland
- Description: Though explicitly defined by the Conceptual Model of Avalanche Hazard (CMAH), the terms wind slab and storm slab are sometimes used interchangeably. S...
- Object ID: ISSW2023_P1.07.pdf
- Keywords: wind slab, storm slab, terminology, avalanche problems
- View additional details about WIND SLAB OR STORM SLAB; WHEN DO WE USE EACH TERM?
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