C044-0011
First results of the 3D-microstructure of snow during MOSAiC

Monday, 14 December 2020
Poster
Martin Schneebeli1, Stefan Hämmerle2, Amy Macfarlane1, David Wagner1,3 and Ruzica Dadic4, (1)WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland, (2)Scanco Medical AG, Basserdorf, Switzerland, (3)Swiss Federal Institute of Technology Lausanne, CRYOS - School of Architecture, Civil and Environmental Engineering, Lausanne, Switzerland, (4)Victoria University of Wellington, Antarctic Research Centre, Wellington, New Zealand
Abstract:
We measured during the MOSAiC field experiment the snow microstructure on sea-ice from early winter to the melt season, and continued measurements with the surface scattering layer. We could measure every week 1-2 full snow profiles between 0.1-0.3 m. We extracted, mostly in-situ, cores of 48-78 mm diameter and of about 0.1 m length, and scanned with 18-28 µm resolution. The goal of these measurements is to understand the formation and metamorphism of the snowpack in detail, and to derive detailed geometrical and physical properties from the samples. We will present first examples and and overview of characteristic snow profiles from leg 1 - 4, spanning the winter, spring and melt season.
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