Results 51 to 60 of about 1,870 (182)

Glide-snow avalanche characteristics at different timescales extracted from time-lapse photography

Annals of Glaciology
Glide-snow avalanches release due to a loss of friction at the snow–ground interface, which can result in large avalanches that endanger infrastructure in alpine regions.
Amelie Fees, Alec van Herwijnen, Moritz Altenbach, Michael Lombardo, Jürg Schweizer   +4 more
doaj   +1 more source

Thermal energy in dry snow avalanches [PDF]

The Cryosphere, 2015
Avalanches can exhibit many different flow regimes from powder clouds to slush flows. Flow regimes are largely controlled by the properties of the snow released and entrained along the path. Recent investigations showed the temperature of the moving snow
W. Steinkogler, B. Sovilla, M. Lehning
doaj   +1 more source

Measure Less, Map More: Using Machine Learning, Physiography, and Prior Depth Maps to Extrapolate In‐Swath Snow Depth Measurements Across Mountain Basins

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Basin‐wide snow depth (SD) maps can support operational water supply assessments, but their availability is limited by measurement costs (airborne) or sampling constraints (satellite and drone). We present Swath‐random forest (RF), a methodology that trains random forests on SD measured within a narrow swath (<10% of a basin) to extrapolate ...
Eric E. Small, Mark S. Raleigh, Jordan N. Herbert   +2 more
wiley   +1 more source

Wilson's Atmospheric Electron Accelerator: A Centennial Perspective

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract As of the time of writing this letter, we mark the centennial of Wilson's runaway electrons proposed in 1925. Owing to instrumentation limitations, Wilson and his students could not detect the particles anticipated by theory Chilingarian et al. (2025, https://doi.org/10.1029/2024jd042350).
B. Mailyan, H. Mkrtchyan, G. Karapetyan
wiley   +1 more source

Snow Avalanches

, 2001
Snow avalanches occur in many areas of Canada, mostly in remote or uninhabited locations. The few that impact society cause significant damage. Snow avalanches have killed over 570 people in Canada since the mid-1800s. Traffic delays and damage to forests cost millions of dollars annually.
openaire   +2 more sources

Towards a model of glide-snow avalanche occurrence using in-situ soil and snow measurements

Journal of Glaciology
Glide-snow avalanches release at the soil-snow interface and are currently difficult to predict. This is mostly due to a limited understanding of the release process and a lack of data, particularly of the snowpack and underlying soil conditions prior to
Amelie Fees, Alec van Herwijnen, Michael Lombardo, Jürg Schweizer   +3 more
doaj   +1 more source

Quantifying the Rapid Propagation of Rainfall and Evapotranspiration Signals Into Soils

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Precipitation and evapotranspiration are major drivers of soil moisture dynamics, which in turn influence plant water availability, biogeochemical reactions, and trace gas emissions. However, it has been unclear whether evapotranspiration signals propagate through soil columns differently than precipitation signals do.
Huibin Gao, Harsh Beria, Marius Floriancic, Martin Hirschi, James W. Kirchner   +4 more
wiley   +1 more source

The Performance Gains of Assimilating Limited Information Into a Fully Distributed Snowpack Model Depend on Model Complexity and Input Data Quality

Water Resources Research
Estimating snowpack conditions in mountainous regions is critical for water resource management, flood forecasting, and avalanche hazard mitigation. However, most snowpack observations lack either spatial or temporal resolution, while estimates from ...
Moritz Oberrauch, Bertrand Cluzet, Jan Magnusson, Tobias Jonas   +3 more
doaj   +1 more source

Snow fracture in relation to slab avalanche release: critical state for the onset of crack propagation [PDF]

The Cryosphere, 2017
The failure of a weak snow layer buried below cohesive slab layers is a necessary, but insufficient, condition for the release of a dry-snow slab avalanche.
J. Gaume, A. van Herwijnen, G. Chambon, N. Wever, J. Schweizer   +4 more
doaj   +1 more source

The Intermittency Regions of Powder Snow Avalanches [PDF]

Journal of Geophysical Research: Earth Surface, 2018
Powder snow avalanches are typically composed of several regions characterized by different flow regimes. These include a turbulent suspension cloud of fine particles, a dense basal flow, and an intermittency frontal region, which is characterized by large fluctuations in impact pressure, air pressure, velocity, and density, but whose origin remains ...
B. Sovilla, J. N. McElwaine, A. Köhler
openaire   +4 more sources