Results 21 to 30 of about 515,079 (210)
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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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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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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Micrometeorological processes driving snow ablation in an Alpine catchment [PDF]
, 2011 Mountain snow covers typically become patchy over the course of a melting season. The snow pattern during melt is mainly governed by the end of winter snow depth distribution and the local energy balance.
C. Manes +15 more
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Microstructure-based modeling of snow mechanics: a discrete element approach [PDF]
The Cryosphere, 2015 Rapid and large deformations of snow are mainly controlled by grain rearrangements, which occur through the failure of cohesive bonds and the creation of new contacts. We exploit a granular description of snow to develop a discrete element model based on
P. Hagenmuller, G. Chambon, M. Naaim
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Sodankylä manual snow survey program [PDF]
Geoscientific Instrumentation, Methods and Data Systems, 2016 The manual snow survey program of the Arctic Research Centre of the Finnish Meteorological Institute (FMI-ARC) consists of numerous observations of natural seasonal taiga snowpack in Sodankylä, northern Finland.
L. Leppänen +4 more
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Enhancing simulations of snowpack properties in land surface models with the Soil, Vegetation and Snow scheme v2.0 (SVS2) [PDF]
Geoscientific Model DevelopmentSnow microstructure – characterized by density, grain size, grain shape and arrangement – fundamentally determines snowpack macroscopic properties.
V. Vionnet +14 more
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Journal of Glaciology, 2017 The instrumented sample holder Snowbreeder 5 is used to investigate the simultaneous influence of settlement on temperature-gradient snow metamorphism in time-lapse micro-computed tomography experiments.
MAREIKE WIESE, MARTIN SCHNEEBELI
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