Results 11 to 20 of about 1,076 (175)
Revisiting snow settlement with microstructural knowledge [PDF]
The CryosphereSnow settlement under gravity is primarily driven by the slow creep of its ice matrix, which exhibits a viscoplastic behaviour. Knowledge of the viscoplastic properties of snow is thus crucial for understanding and predicting the snowpack seasonal and ...
L. Védrine, P. Hagenmuller
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Wind tunnel experiments to quantify the effect of aeolian snow transport on the surface snow microstructure [PDF]
The Cryosphere, 2023 The evolution of the surface snow microstructure under the influence of wind during precipitation events is hardly understood but crucial for polar and alpine snowpacks.
B. Walter, H. Weigel, S. Wahl, H. Löwe
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Multiscale modelling of snow microstructure [PDF]
International Journal for Multiscale Computational Engineering, 2013 A three-dimensional multiscale spatial model of snow with evolving microstructure is presented. Many engineering and environmental problems require a comprehensive understanding of snow behavior which arises as a consequence of phenomena spanning a wide spectrum of spatial length scales.
CARBONE, ANNA FILOMENA +3 more
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Convection of snow: when and why does it happen?
Frontiers in Earth Science, 2023 Convection of water vapor in snowpacks is supposed to have a major impact on snow density and microstructure profiles with strong implications for the thermal regime and snow stability.
Mahdi Jafari +3 more
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Angle of repose experiments with snow: role of grain shape and cohesion
Journal of Glaciology, 2020 Snow appears as a granular material in most engineering applications. We examined the role of grain shape and cohesion in angle of repose experiments, which are a common means for the characterization of granular materials. The role of shape was examined
Carolin Willibald +4 more
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Characterizing the microstructural and micromechanical properties of snow [PDF]
Cold Regions Science and Technology, 1999 Abstract A micropenetrometer has been developed that produces snow grain bond ruptures at the microstructural level and provides a unique signal for different snow types. A micromechanical theory of penetration has been developed and used to recover microstructural and micromechanical parameters for different snow types from the penetration force ...
Johnson, Jerome B., Schneebeli, Martin
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Microstructural characterization of snow, firn and ice [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2019 This paper provides an overview of techniques used to characterize the microstructure of snow, firn and ice. These range from traditional optical microscopy techniques such as examining thin sections between crossed polarizers to various electron-optical and X-ray techniques.
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A microstructure-based constitutive law for snow [PDF]
Annals of Glaciology, 1993 A constitutive theory of snow is developed to describe the mechanical properties of snow in terms of the properties of the ice grains and the necks that interconnect them. The principle of virtual work is used to calculate the stresses in the particles and necks.
Puneet Mahajan, Robert L. Brown
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Monitoring dry snow metamorphism using 4D tomography across 20 experimental conditions [PDF]
Earth System Science DataRefined observations of the temporal evolution of snow microstructure are crucial for improving the understanding and modeling of snow metamorphism. X-ray tomography has opened new possibilities for observing the microstructure of dry snow by enabling 3D
O. Dick +3 more
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Anisotropy of seasonal snow measured by polarimetric phase differences in radar time series [PDF]
The Cryosphere, 2016 The snow microstructure, i.e., the spatial distribution of ice and pores, generally shows an anisotropy which is driven by gravity and temperature gradients and commonly determined from stereology or computer tomography.
S. Leinss +5 more
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