Angle of repose experiments with natural and spherical snow

DOI

Angle of repose experiments were performed with different snow types at temperatures between -2 and -40°C. They were used to examine granular snow dynamics on the grain-scale with focus on the role of grain shape and cohesion. The angle of repose was observed by sieving snow onto a round, freestanding base until a stationary heap was formed. This dataset consists of 1) the images of the experimental heaps that were taken to determine the angle of repose, 2) one binary 3D micro computed tomography image of each snow type. The CT images were taken with the SLF micro-CT40 to characterize snow properties and grain shape. The experiments with natural snow types (rounded and faceted grains) and spherical model snow allowed for an examination of the differences in granular properties between natural grain shapes and spherical particles in view of Discrete Element Modelling. With the chosen temperatures, the effect of sintering could be observed that increases the angle of repose with increasing temperature.

Identifier
DOI https://doi.org/10.16904/envidat.149
Source https://www.envidat.ch/dataset/angle-of-repose-of-snow
Metadata Access https://www.envidat.ch/oai?verb=GetRecord&metadataPrefix=datacite&identifier=oai:envidat.ch:1006b6c1-abb7-4c62-b2e4-9c6d0199431b
Provenance
Creator Carolin Willibald (WSL); Henning Löwe (WSL); Thiemo Theile (WSL); Jürg Dual (ETH Zurich); Martin Schneebeli (WSL)
Publisher EnviDat
Contributor Henning Löwe; EnviDat
Publication Year 2020
Funding Reference Swiss National Science Foundation
Rights ODbL with Database Contents License (DbCL)
OpenAccess true
Contact envidat(at)wsl.ch
Representation
Language English
Resource Type Dataset
Format TXT
Size KB; 1 KB
Version 1.0
Discipline Environmental Research
Spatial Coverage (5.956W, 45.818S, 10.492E, 47.808N); Switzerland